Cdma Protocol

GENERAL KNOWLEDGE PT. III

• Why is an MP3 file called SO?

MP3 stands for MPEG Audio Layer-3. MPEG stands for Moving Picture Experts Group, which develops compression systems used for video data, such as DVD movies and broadcasts HDTV. The MP3 format is a compression system for music. Help reduce the number of bytes in a song without affecting sound quality. The goal of the MP3 format is to compress a CD-quality song by a factor of 10 to 14 without noticeably affecting the sound quality with MP3, 32 megabytes (MB) song on a CD compresses around.

• FAMOUS TO BE LAUGHING BIRD 'A' and 'blue-winged VARIETY "?

The famous bird has a kookaburra "laughing" and "variety of wings' blue The Laughing Kookaburra Kookaburra, D, is slightly larger than the blue-winged Kookaburra, with a bill a little longer. Blue-winged Kookaburra also has a head of white stripes with a white instead of dark eyes, and no dark spot behind the eye. Blue-winged Kookaburra has a bright review blue wings and rump. The call is also very different.

• WHAT IS GUTTATION?

Guttation is the loss of water as water droplets hydathodes (small pores) in the leaf margin of a small herbaceous plant. Water has the ability to rise up to 2 feet on its own via the xylem of the plant. At night or early morning, when the rate of absorption by the roots exceeds the rate of transpiration (evaporation) by the leaves, a large amount of water accumulates on the floor of the body that can damage cells. The plants have hydathodes the end of the veins, by the that this excess is lost as water droplets. It takes place mainly in small plants like banana, pink, etc.

• WHAT IS GNOTOBLOLOGY?

Gnotobiology is the science of studying animals or other organisms raised in germ-free environments or those that contain is only known germs. Scientists compare gnotohiotic animals to normal animals, whose bodies carry many germs such as bacteria, viruses and parasites. In this way, scientists can better determine the specific germs affect a body.

• WHAT IS BUFFERING Internet?

Buffering is a situation that occurs when a streaming media player is saving parts of a file transmission for local storage media for playback. Most media players buffer a small percentage of a streaming media presentation communication before start playing. Buffering can also happen in the middle of a presentation when the available bandwidth does not match the required bandwidth of the presentation.

• WHAT A biometric security system?

In the terminology of security, biometric security system is an authentication technique that relies on a computerized system to electronically validate a biological feature physically measurable is unique and can not be duplicated. Various types of biometric security systems are used for identification in real time most popular are based on face recognition and fingerprint, iris and retinal scan, speech, facial thermograms, and hand geometry.

• WHERE are files and websites on the Internet stored?

The Internet is a collection of a large number of client-server systems based on. So all the files and other resources in it are stored in secondary storage devices of the new perspective servers. Website servers called as web servers. So when you type a URL for a website in the address bar of your browser establishes a connection to the web server which in turn gets the data from the secondary storage device (eg hard disk) to use, and returns to the respective browser. The same is true of any other resource (image, file MP3, compressed file, etc.) that has Internet access.

• Why can not the B drive in a computer?

Not that computers do not have units of B. At first, (just two decades ago), personal computers had no hard drives - were equipped with two floppy units called units A and B. Later, a hard disk was introduced and was labeled the C: drive. Other units such as CD, DVD drive, flash drive and other were labeled D, E, etc. If you have a computer that has two drives, then called a unit and drive B.

• WHAT IS E-waste?

All obsolete electronic devices such as computers, servers, printers, monitors, televisions, telephones phones, calculators, compact discs, floppy disks, chips, processors, motherboard, PCBs end up as electronic waste. Electronic waste contains many hazardous substances like PVC, plastics, heavy metals, brominated flame retardants, etc.

• EFT Monitors WHAT?

In general, all types of monitors are a burden to our eyes. EFT, or the fresh eyes of Technology, the monitors have a vital layer in the rear that emits anions and far-ro infrarorf cool and alleviate tension in the eyes and relax your eyes and body.

• WHY THE FREQUENCY FM CHANNEL generally between 90 and 110 MHz?

The FM term is somewhat misleading because it represents the frequency modulation technique emission of radio waves. Frequencies between 80MHz to 110MHz, is generally used for FM broadcast worldwide, all are in the VHF frequency range of 30Mhz to 300Mz. However, the FM transmission first occurred in the U.S. in the 1940s in the frequency band from 42 to 50MHz. Later, in 1945, the Federal Communications allocated bands from 88 to 106Mhz for FM broadcasting, citing reasons for their non-interference with other radio bands in and around a city Later, in western Europe, due to the already congested medium-wave band, broadcasters preferred to migrate to the FM band norm. In the UK, for the BBC program first time in the FM band in 1955. Since then, the FM has almost become an international standard for local emissions within the city limits and the frequency range that are used around the world have been in the range of 88 to 106 MHz only.

• What is the origin of the word 'Roger' IN TELECOM?

It originates from Morse code, in which the end of the record was marked with IHL (.-.) dahdih which incidentally is a code of 'R'. For voice communication, people use an equivalent for each letter (eg Omega-Pie-England-Norway OPEN). For R was the equivalent of Roger. Therefore, all .-. communication ended, Roger ie, meaning "this communication is more.

• WHAT IS encoder and decoder?

An encoder is a device that transforms data into a series of bits known only to him and the decoder is a device which transforms the bits of code to generate the original data again. These two are mainly used in computer technology, but the underlying concept can be used anywhere. For example, the name "New Delhi" can be coded as "ihleD 'or '45 # 1278. Later, the decoder regenerates the original "Delhi" for this code, known as the coding system.

• What is IMEI?

• WHAT IS THE DIFFERENCE BETWEEN a subwoofer and a woofer?

There are no major differences between these two speakers since both systems are used to reproduce low frequency sound notes. Subwoofers are designed to play a band of frequencies below 30 Hz level and woofers produce sounds above it. Sometimes bands can overlap. The smallest of the diaphragm of a speaker halfway decent is 8 inches, a subwoofer is 12 inches.

• WHAT IS A SIMPUTER?

Simputer The word is an acronym for "simple, cheap and multilingual team of people. "It is a small, inexpensive, handheld computer, designed to bring computing power to developing countries. Includes text-to-speech software and operating systems running the GNU / Linux. The device was designed by the Simputer Trust, a nonprofit organization established in November 1999. Simputers is generally used in environments where computing devices such as personal computers can not be used.

• What is Blue Tooth technology?

Bluetooth is a low cost, low power radio interface standard for wireless communication over short distances. It is an open standard to allow intelligent communication devices with each other. This allows any type of electronic equipment (from computers and cell phones to keyboards and headphones) to make their own connections, without wires, cables or any direct action of a user. It could allow the replacement of the cables connecting the correction from one device to another with a universal radio link.

• WHAT IS THE DIFFERENCE BETWEEN THE ELECTRICAL AND ELECTRONIC EQUIPMENT?

• WHEN WAS CREATED Windows operating system?

The Avtar before Microsoft's Windows Interface Manager, being developed in September 1981. The first version of the Windows operating system was announced on 10 November 1983. It is an extension of MS DOS, and wore an interface Graphical user. Windows 1.0 was finally released on the market in November 1985.

• WHAT IS BETA TEST?

Typically, programs through two stages of testing before it is over. Only users within the organization developing the software often make the first stage, called alpha testing. The second stage, called beta testing, generally involves a limited number of external users. Beta testing is the formal process of requesting Learn about the software still in development. Beta testing usually the last step in making a software developer before taking the product to market.

• What is spyware?

Referring to last week's response, I point out that spyware programs are not spy tend name. exe as spyware32, exe, ispyexe or such. It may be kazaa.exe, dider.exe Msbb.exe newsupd.exe, etc. Elimination of registry keys is ownright suicide because the operating system (Windows) would be dead without any registry keys. Assuming the statement to the effect of eliminating "all those infected / Spyware once "registry keys, which remains a difficult decision, because unless the user is an expert about the spyware in particular, is impossible. More than one anti-spyware software is neededto keep your PC spyware-free.

• WHY ARE ADVISED TO SWITCH OFF MOBILE PUMPS GASOLINE?

Cell phones are asked to be switched off at the gas pumps because they are a potential source of ignition of the vapors flammable in that environment. This step was followed after accepting the fact that there is a risk of accidents due to ignition of fire of the phone batteries phones. As a result of manufacturers and service providers of cell phones asking users to keep cell phones in "off".

• What is spyware?

Spyware is a malicious program that harms your computer and invades your privacy. Include Trojans Spyware, Adware, Trackware, Trojans and viruses. Spyware can boot confidential information from your computer and slow its performance to a crawl. This threat copies its file (s) to your hard drive, your typical file name is: Spyware.exe. This problem can be solved manually by deleting all registry keys.

• What is a TFT?

Thin Film Transistor (TFT) technology of liquid crystal display eliminates the bulky traditional cathode ray tube (CRT). LCD backlight using a strong light source and control the amount of this light is allowed to reach the points (pixels) of selectively allowing light to reach each pixel. LCDs achieve this by taking advantage of a key property of "twisted" liquid crystal molecules, their ability to block polarized light naturally butthead let it pass by degrees when applying an electric field. LCD cells are properly controlled and organized in a matrix of rows and columns Hat.

• What is a "firewall" in the computer terminology?

In computer security, a firewall is a device that blocks unauthorized access to the area network a local organization. A firewall can reside in the management, the server that acts as a gateway on the LAN to the Internet. The firewall keeps track of each input file or from the local area network to detect the source of viruses and other problems that could enter the network.

• WHY EMAIL SPAM ON JARGON called SO?

The term spam is derived from the popular song sketch from Monty Python 'Spam', located in a cafe where everything on the menu includes Spam luncheon meat. The chorus repeats "Spam, spam, spam" over and over, drowning all conversation. From the 'Spam' involves sending identical messages to numerous recipients without your permission, has been named. The correct term for that unsolicited commercial (UCE).

• WHAT ARE THE CHICKEN SWITCH?

Chicken switches are switches of the optimizations that can disable the chip (such as reservoirs) to isolate the problems. When we throw all the "chicken switch", we put the processor in the "tinkertoymode. If still not working, the problemjsjikely to reside elsewhere, in the external memory, for example. We do the same sort of thing in software - to provide disable cache settings and other forms of optimization in order to isolate problems.

• What is a handshake in computers?

Shaking hands is the process by which two computers initiate communication. A handshake begins when sends a message to another indicating that wants to establish a communication channel. The two teams then send several messages back and forth merely to make agreement on a communication protocol. Two modems make a handshake every time they are in, to help them determine how the exchange of information. If the modem's speaker is on, you can hear the handshake - the series of cries and signals.

• What is CDMA technology?

CDMA (Code Division Multiple Access) is a digital cellular technology that uses spread spectrum techniques. Unlike competing systems, such as GSM, that use TDMA, CDMA does not assign a specific frequency to each user. Instead, every channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random digital sequence. CDMA consistently provides better capacity for voice and data communications than other commercial mobile technologies allowing more customers to connect at any given time, and is the common platform on which 3G technologies are built.

• CAN A COMPUTER Having more than one hard drive?

There are two main types of hard disk used today - IDE (Integrated Drive Electronics) and SCSI (Small Computer System Interface) hard drives. IDE drives are used in PCs and servers SCSI. Plates usually come bundled with two IDE ports. Each port can have two devices connected to it on the same data cable for a total of four devices. DVD.units CD and are also connected to the IDE ports and has as one of the four devices. Once you have four devices, then you can add a PCI IDE controller to have more ports for adding devices. Hard Drives SCSI connected to a PCI SCSI controller will be able to accept seven of the standard SCSI devices and 15 for new, wide SCSI.

• HOW MAKES A laser printer work?

A laser printer uses the phenomenon of static electricity as a temporary glue. The basic component is the photoreceptor, typically a revolving drum or cylinder. It is made of a highly photoconductive material is'discharged by photons of light. The layers of the printer the drum with positively charged toner a '- a fine, black dust. Because it has a positive charge, the toner adheres to areas of high negative drum, but not the positively charged 'bottom'. With the powder pattern affixed, the drums on a sheet of paper, which moves along a belt below. Before the roll paper on the drum, is given a negative charge by the corona wire transfer (roll load). This charge is stronger than the negative charge on the electrostatic image, so the paper can get the toner powder away. Since it is "moving at the same speed as the drum, the document reflects the pattern of the image to maintain exactly the role of clinging to the battery is discharged by the corona wire immediately after picking detac toner.

• What PRODUCTS The company's first notebook?

Designed in 1979 by William Moggridge of Britain for Grid Systems Corporation, the compass the network is one-fifth the weight of any model equivalent in performance and was used by NASA on the space shuttle program in the 1980s. A 340 kilobytes bubble memory laptop with magnesium housing die-cast and folding electroluminescent graphics display screen, this is probably the first portable ever produced.

• WHAT IS Greenstone Digital Library?

Greenstone is a suite of software that can serve digital library collections and build new collections. It runs on Windows, Unix and Mac OS X and provides a new way of organizing information and publishing it on the Internet or CD-ROM. Greenstone is produced by the New Zealand Digital Library Project at the University of Waikato, and distributed in cooperation with UNESCO and the Human Info NGO. It is an open source software. The New Zealand Digital; website contains numerous collections Library exam pie, created with the Greenstone software.

• Which was the first cellular service provider?

13.1983 In October, the first call on a cellular system business was conducted in Chicago, and Cellular One service in Washington, DC / Baltimore area began in 1984.

• What company produced the first laptop?

Designed in 1979 by William Moggridge of Britain for Grid Systems Corporation, the network time to the fifth of the weight of any model equivalent in performance and was used by NASA on the space shuttle program in the 1980s. A 340 kilobyte bubble memory laptop with magnesium housing die-cast and folding electroluminescent graphics display, this is probably the first laptop ever produced.

• WHAT IS THE DIFFERENCE BETWEEN ELECTRICAL AND ELECTRONIC DEVICES?

The distinction between electrical components and electronic / elements is twofold. The first, as electrical wires or cables, resistors, etc. are passive, ie not requiring a power source for operation. Secondly, the output power of the signals applied to them can never exceed the input power is, no power amp. Electronic components as valves, transistors, ICs, etc. are active components. They need their own power supply for operation and, depending on the design, can or can not provide power amplification.

• WHY HAVE NOT CDMA phone SIM CARDS?

CDMA phones have phone numbers programmed into your phone and operator programs the SIM card numbers. The latest phones have two options. Since all of the CDMA network phones blocked, there is no need for the provision of the SIM card. Like cell Are compatible with any GSM operator, which provides the SIM card that allows connectivity to the network. This makes the operator independent phone.

• WHAT IS THE DIFFERENCE BETWEEN LINUX and UNIX?

Unix developed by Ken Thompson is a multi-user, multitasking operating system that could be used remotely and is portable. Dennis Ritchie and Thompson rewrote UNIX in C programming language Linux, developed by Linus Torvalds of Finland, is a variant of Unix. It has all the features of Unix, plus a bit more as environments incorporating graphical user interface. It is particularly strong in creating Networking and Internet related features and works with a wide variety of hardware and peripherals, some Unix can not, due to its scope of application purpose. The characteristic of open source Unix has remained, anyone can access the Linux source code regardless of version.

• WHAT IS Greenstone Digital Library?

Greenstone is a suite of software that can serve digital library collections and create new libraries. It runs on Windows, Unix and Mac OS X and provides a new way of organizing information and publishing it an Internet / CD-ROM. Greenstone is produced by the New Zealand Digital Library Project at the University of Waikato, and distributed in cooperation with UNESCO and the Human Info NGO. This is an open source software. The new website of the New Zealand Digital Library contains numerous example collections, all created with the Greenstone software.

• WHAT IS CLICK FRAUD WITH RESPECT TO SEARCH ENGINES?

Click fraud is the practice of artificially inflating the statistics traffic to defraud advertisers. In the pay-per-click system, advertisers pay a fee for every click on your link. By using automated programs to click (called hitbots) or the use of low-cost workers to click on links, the authors create the illusion that a large number of potential customers click the links of the advertiser, when in reality, there is no likelihood that any of the clicks will result in benefit of the advertiser. Click fraud scammers often profit from affiliate programs offered by some search engines.

• HOW IS WORKING Global Positioning System (GPS) WORK?

The basic principle of operation of GPS is that any point on Earth can be found if controlled from four locations different. For that reason, the GPS uses 24 satellites in six different orbits at an altitude of 18,000 kms. So, at any time, any place is guarded by four different satellites. The GPS device sends a signal to the four satellites. These satellites have a database containing information of all places on earth. These four satellites, in turn, send the latitude, longitude and altitude of this place in particular when referring to your database.

• WHAT IS FM?

FM means frequency modulation. Connecting to a carrier wave transmits radio frequency signal sound. The frequency of the radio wave is varied or adjusted accordingly. When the modulated wave is received by a radio, filtered radio wave signal to reproduce audio. FM is less susceptible to noise compared to AM or amplitude modulation where the mixing is carried out by varying the amplitude. The signals TV, sound is FM while the image signal is amplitude modulated.

• WHAT IS FUZZY LOGIC?

Fuzzy logic is a process used in computer science to solve problems involving ambiguous data, as the ambient temperature is too hot, too cold or just right. Use multi-valued logic to reach a more accurate and balanced. In contrast, the binary logic knows only two states: on or off, yes or no, one or zero.

• HOW INTERNET SEARCH ENGINE WORK?

Search engines use automated software programs known as spiders or bots to survey the site and build their databases. Web documents are retrieved by these programs and analyzed. Data gathered from each web page are then added to the index of search engines. When you enter a query in a motor center search, his entry is compared to the search engine index of all web pages have been analyzed. The best URIs are then returned to you as samples classified in order with the best results at the top.

• HOW IS WORKING Global Positioning System?

The GPS receiver is a receiver only, without any transmission capacity. The satellites do not contain the databases on the site or anything. Containing the atomic clocks high precision that generates a code that is transmitted to Earth. The GPS receiver receives the code from multiple satellites that are slightly changed in the time due to the difference in the distances of the satellites. Using this difference the receiver calculates the latitude and longitude.

• WHAT IS THE FULL FORM OF COMPUTER AND MOBILE TFT screens?

Thin Film Transistor (TFT) is a type of flat screen LCD display panel. It is so called because each pixel is controlled by transistors. TFT technology provides the best resolution of all panel technologies plane, but is also the most expensive. TFT screens are generally designed to operate at a specific resolution.

• WHAT IS THE POINT IN MOBILE PHONES?

EDGE technology is a modulation technique for GSM networks. An Enhanced Data Rates for GSM Evolution (EDGE) is used to increase network capacity and data rates in mobile networks. EDGE provides data rates up to 384 kbps.

• Who invented the QWERTY keyboard?

Werty keyboard (also known as universal keyboard) is used in computers modern. The QWERTY keyboard named after the first six letters of the top row. It was invented by CL Sholes in 1872.

• What is a holographic versatile disk?

A Holographic Versatile Disc is an optical disc technology still in the research phase. It employs a technique known as holography aligned, whereby two lasers, one red and one blue-green collimated in a single beam. These discs have the capacity to store up to 3.9 terabytes (TB) of data. The HVD also has a transfer rate of 1 Gbit / s.

• What is a piconet?

A piconet is a collection of devices connected via Bluetooth technology in an ad hoc fashion. A piconet starts with two connected devices, such as a laptop PC and a cell phone, and can grow to eight connected devices. All Bluetooth devices are units equal and have identical implementations. However, when set a piconet, one unit will act as master and the other as a slave for the duration of the piconet connection.

• What is a microchip?

• What is an ER diagram?

ER Diagram (Entity Relationship) is a representation schematic of a data model based on a perception of the real world that consists of a collection of basic objects called entities and relationships between these objects. It is widely used in database design. The E / R diagram was introduced by the PP Chen. An entity is a tangible object that exists in the real world, some information relevant aspects that can be stored. The qualities of an entity that can store information as they are called attributes. For example, if the teacher is an entity, then the ID teacher's name, etc., all his attributes. A partnership among several entities, called a relationship.

• WHAT IS A pixel dead?

• WHAT IS NOT VOXML stand for?

The extended language acronym VoxML voice dialing. It is a combination of IVR (Interactive Voice Response) technology that deals with the digitization of audio and Internet technology. Use VoxML, you can listen to content on a website without using a computer, all you need is a telephone.

• HOW BIG IS A VIRUS?

The viruses are called non-life molecules, for two reasons, which are parasites and show no signs of life until they enter the host. They are creatures small. The herpes virus is 100 nanometers or 100 billionths of a meter. In comparison, bacteria are 10 to 100 times larger than viruses.

• WHAT IS THE ORIGIN OF THE word algorithm?

A formula or a series of steps to perform manipulation arithmetic is called an algorithm. All computer programs are based on algorithms. The origin of this word is the name of an Arab mathematician - Al Khwpresmi. The word used is "Algor. Arithmos the influence of the Greek word, 'which means that math,' algorism 'changed to' algorithm.

What is WYSIWYG?

WYSIWYG means for 'What You See Is What You Get. This phrase was popularized with the advent of digital typesetting and desktop publishing with the help of the computer. Initially, the printing enhancements, such as bold, italics, etc. were not visible on the computer monitor, but could be reproduced by the printer. The modern word processors display the text as it appears in print.

• HOW SE music stored on a CD?

Sound consists of waves whose intensity varies from zero to a fixed value continuously. The intensity becomes a equivalent electrical signal. This signal is sampled at a rapid pace. The instantaneous electrical signal which is then digitized and stored in the CD with a computer controlled device. A reverse process then the sound plays. The faster the sampling rate, the better the quality music.

• IS IT POSSIBLE Hack a STANDALONE COMPUTER?

It is common knowledge that a computer connected to a network, a network of networks or the Internet is vulnerable to hackers. In other words, the information stored on that equipment is never safe. Professor Ross Anderson, University of Cambridge, however, showed that collect radio signals emitted by the video monitor on the computer can Break up an independent.

• Why all User START with the digit 9.

According to the Telecom Regulatory Authority of India (TRAI), local numbering is allowed in the range of 2-8. While 0 is used for access to STD, 1 is used for special issues. Therefore, the left digit 9 only.

• HOW TO KEEP A RECORD OF COMPUTER EVEN when it closes?

Our teams are not run by a single operating system, but the BIOS (Basic input / output system), which resides in pernianently chips on the motherboard that connects most computers. The BIOS is kept powered by a button battery (1.5 V or so) or any variant. The cell remains present in the motherboard and BIOS helps to remember not only time, but other hardware settings and the GUI (graphical user interface) is synchronized with any BIOS when the computer starts and therefore, displays the team displays the correct time.

o What is BLACK BOX TESTING?

Software testing based on production requirements and without any knowledge of the structure or internal coding in the program is known as black box testing. Black box testing, concrete box or functional testing is used in computer programming, software engineering and software testing to verify that the results of a program, given certain inputs, conform to the functional specification of the program. A Additional technical, white-box testing or structural testing, uses information about the structure of the program to verify that it works correctly.

• WHAT IS INTERNET surfing?

When you want some information on a topic of your Internet connection, you will have the option of using search engines and many websites. Open one by one and collect data on the subject that is of particular interest to you. This is known as surfing.

• What is Java?

Java is claimed to be the universal programming language that is used to to operate all devices, including those used in homes, like toasters, ovens, irons and geysers. The word 'Java' represents the coffee, that is exported from China to the U.S..

• What is HTTP?

HTTP stands for "Hypertext Transfer Protocol. It is a protocol governing the pages designed in HTML (Hypertext Markup Language) that allows users to access information stored in Many computers regardless of their geographical location. HTTP has revolutionized the field of information technology and is the backbone of the Internet or the information superhighway.WHO coined the term World Wide Web? WWW or World Wide Web, a synonym for the information superhighway or the Internet, was, surprisingly, coined by a group of nuclear physicists working at the European Center for Nuclear Research in Geneva.

o What are Supra-glacial lakes, and where can you find?

Supra-glacial lakes are found on the surface of glacier ice earlier in the melt season. They are found in temperate glacier surface.

• CYBERSQUATTING HOW DOES WORK?

Under U.S. federal law in 1999 known as the Anti-Cybersquatting Law on Consumer Protection, cybersquatting by registering, trafficking, or use of a domain name with bad faith intent to profit of the goodwill of a trademark belonging to someone else. It refers to the practice of buying domain names that reflect the names of existing companies with the intention to sell the names back to profit when companies are going to put their websites.

or HOW Jerk-O-Meter Work?

It is a discourse pattern recognition and tone that helps to hire a qualified person is in a conversation. It is evaluated on a scale of 1 to 100. Researchers at the Institute of Technology Massachusetts (MIT) are developing software for cellphones that analyzes speech patterns and voice tones to do this. It is seen as an important tool to improve relations and has great potential in telemarketing.

o What is Neale BALL TOKEN INSTRUMENT?

Designed by Neale, an engineer with the railway GDP (now Central Railway) is an electro-mechanical instrument provided for in every train station ECTIONS single line. To ensure safety in operations the train by removing chips that are given to train drivers, the authority to enter a block section. The chips are spherical steel balls, which are emitted such that only one token can be issued to an address in a moment after making sure that the train was authorized before the section and no other train between stations. Each station has one instrument for each direction, which are electrically connected to similar instruments provided at stations adjacent to both sides. This ensures that only one train can enter the block section at a time.

• WHO INVENTED T9 dictionary USED IN MOBILE PHONES?

The inventors of the T9 dictionary used in cell phones are Svensson Henrik Brun (Denmark) and Williams, Stephen (Finland). This method of predictive text input helps you write SMS messages efficiently. Improved multi-tap method and the least common button taps total are required. This is achieved by a small, fast access to dictionary to automatically display the word most often desired for a sequence of keystrokes keyboard.

• What is a crystal radio?

A crystal radio is the basic form of a radio that can detect radio signals without a power source. Parties that have very few and can be built in a short time with commonly available items. It works best if transmitter is within 40 km of the series. Simple crystal radios are often made with some handmade pieces as an antenna wire, tuning coil of copper wire, crystal detector and earphones. Receives a crystal radio programs broadcast radio stations that convert sound into radio waves and send signals everywhere. The glass radio antenna, a long cable, picks up the signals and passes through the series as an electron current. It uses a crystal detector to convert this power to good radio wave electricity. The detector can be made from a special rock crystal set in a headline. Use headphones to convert sound to electricity the sound you can hear.

• WHATS The World's First Software?

Ada Lovelace wrote a crude program for the Analytical Engine designed by Charles Babbage in 1827, but the machine was never implemented, HI 1949, the short code language appeared. Went the first computer language for electronic devices and the programmer needs to change their statements in zeros and ones by hand.

• HOW SE different satellite phone from a cell phone?

By satellite and cell phones are wireless devices. They almost look alike, but the way we work is totally different. A cell phone features at the base of the cells, and therefore called cellular phones. The network area is divided into small areas and an antenna is installed in each area. These are also called towers. When a cell phone is moving, comes from one cell to another. After crossing the border of a cell, the phone sends a signal to the MTSO (Mobile Telephone Switching Office). With the help of control channel database of the MTSO transfers the phone on a new cell or area. Use of mobile low-orbit satellite (LEO). When a satellite phone is activated, the signal goes up to any number of satellites of a group that the phone is registered. When a person makes a call from the phone, signal goes to the nearest satellite orbit. The satellite is connected to the gateway or ground station. Then the gateway takes the call to the destination.

• What is the 3rd SPACE vest?

These vests help users withstand the shocks virtual literally, an American surgeon has invented a vest that allows users of computer games feel physical attacks such as shootings, stabbings, etc., while the games. The vest uses air pressure and feedback from the computer to simulate hits in the regions of the torso of a person, who was allegedly beaten if the person were really fighting a battle. Designed by Mark Ombrellaro and was originally intended for medical purposes.

• WHY Which is the symbol @ USED IN E-MAIL?

An email address identifies a location to which messages mail can be delivered. The first e-mail delivery by contracting two machines was made in 1971 by Ray Tomlinson, a programmer at Bolt, Beranek and Newman, an engineering company in Cambridge, Massachusetts. She needed a way to separate, in the e-mail address, username of the user's machine was on. I wanted a character that would not in any conceivable circumstance, is at the user's name. He looked down at the keyboard and chose the @ symbol between different punctuation marks available on your keyboard Model 33 teletype. I had no idea he was creating an icon for the connected world. Today, e-mail is the most used application on the Internet. Each email account has a unique address. A general format for an email address is: user @ host_name. The part before the @ sign is the local part of the URL, the user name of the recipient, and the part after the @ sign is the domain is a host computer name.

• WHAT IS THE INTEREST InterPlanetary?

If the Internet allows users to obtain. The information from anywhere in the world, the interplanetary Internet will allow users to access information and even control experiments that take place far from Earth. Vinton Cerf, considered the founding father of the Internet and a co-creator of the interplanetary Internet, is working on standards to guide communications Internet in the space age.

• WHAT IS Cyberslacking?

It is a slang term used to describe employees who surf the net, write e-mail or enjoy other things, "network of work-related activities unrelated to their work. These activities performed during the time periods that are being paid by your employer. The individual is called cyberlacker, while the act is Cyberslacking,. It's. also is called as cyberloafing.

• WHAT IS CRYOPTOGRAPHY?

It is the practice of encrypting and decrypting messages secret code to make them unintelligible to all but the intended receiver can also refer to the technique of cryptanalysis, through which they break encryption codes. Overall, the science of secure communication and secret, involving both cryptography and cryptanalysis, is known as cryptography. Today, the principles of cryptography are applied to the encryption of fax, television and computer network communications. The secure exchange of computer data is of great importance to the banking, government and commercial communication.

• What is a Vocal Joystick?

The "Vocal Joystick" was developed by researchers at the University of Washington. This is a computer program that allows people with disabilities who can use their voice but not his hands or arms to control a cursor using sounds. This joystick detects sounds 100 times per second and the motion becomes on the screen.

• WHAT IS A SPIDER-MAIL?

A spider-mail, also known as a web crawler or web robot is a program you can visit the pages on the World Wide Web automatically methodical. They are the most commonly used by the search engines to surf the web and a copy of the new sites so that the indices are updated regularly engines spiders are also used by some sites to maintain their pages to ensure that hyperlmks are updated and the HTML is valid. It is also said to be used by spammers to capture email addresses appearing on websites.

• What is Web 2.0?

- The Internet as we know has existed for over 10 years. Has been used primarily for searching, browsing and reading static information. Now, is becoming something very different. We are now in what is called the era of Web 2.0, where the Internet is more about interactivity. The concept began with a brainstorming session between O'Reilly and MediaLive International in 2004. Web 2.0 can be defined as a set of technologies that enable collaboration and exchange between Internet users. The tools of Web 2.0 Web sites are community based or hosted services like social networking sites, Encylopaedia online like Wikipedia, blogs and podcasts

• WHY spam called spam?

A possible origin is famous Monty Python Spam song lovers scheme Vikings gonna 'spam spam spam spam spam spam lovely spam spam wonderful ... " As spam is repeated several times until you get tired of hearing it, is chosen to refer to the value and repetitive e-mail. Also, canned luncheon meat called spam is by Hormel, not like in America and most Americans believe no nutritional value to reserve the first opportunity. A group of computers on a university supposed to describe unsolicited junk mail as spam, because it shares several properties with the meat.

• WHAT IS NANO A 'LA FACTORY?

Researchers in Japan have invented a small brain that can act as a remote control for swarms of nanomachines. Simultated eight are nano-machines to create a "nano factory." According to experts, nano-machines could also be used to increase processing power of future computers. They also have high hopes for nano-machines for the treatment of diseases. The machine is made from 17 molecules duroquinone of chemicals. Each is known as a "logic device".

• What is cybersquatting?

Cybersquatting is the registration of a website the names of popular brands. The word squat in this context means the unauthorized occupation of property belonging to another person in the Internet domain, business registration techsavvy websites in the names of popular brands whose owners do not have websites of their own. This can lead to misinformation in the media on the Internet about products or services of the brand is sold in the market. The brand owners, naturally, would like to buy the domain or to give authentic information about products and services or to stop the harmful effects of such distorted sites. The first person who registered the brand name sold the site and make a profit. The ethical and legal aspects of this practice are ambiguous and the intent of the original owner of the site may be real or fraudulent.

• What is MySQL?

MySQL (pronounced'my-ESS-cueel ') is an open source, multiuser true, multi-threaded relational database management system relational databases (RDBMS) that uses structured query language (SQL). MySQL has been developed by two Swedes and a Finn - David Axmark, Allan Larsson and Michael Widenius. This was written in C, C + +, and was first released in 1995. Currently, MySQL has more than 11 million installations. MySQL is fast and flexible enough to allow storage of records and images on it. Its main goals are speed, robustness and ease of use. MySQL is Open Source, 100% GPL (General Public License) database. This provides a great opportunity for open source cornmunity and those who are developing open source software.

• WHAT IS WITH REFERENCE TO SONET optical networking?

Sonet (Synchronous Optical Network) is a high-speed physical layer network designed to carry large volumes of traffic over distances relatively long in the fiber optic cabling or lightemitting laser diodes (LED). Provides a standard interface for communications companies to connect the networks based on fiber optic cable to handle multiple data types (voice, video, etc). Sonet defines a technology for carrying many signals of different capacities through a synchronous, flexible, optical hierarchy This is achieved through a multiplexing system byteinterleaved. Byte-interleaved multiplexing simplifies and provides end to end network management. Sonet was proposed by Bellcore in the mid 80's dry now an ANSI standard. It is a successor to other technologies well-known communication network implemented in optical fiber called PDH (Plesiochronous Digital Hierarchy). It has several features that make it good for Internet today: We define clear standards interoperability between products from different vendors. It can be almost any higher-level protocol (including ownership intellectual), and includes integrated support for facilitating the management and maintenance. Sonet has emerged as a powerful protocol that is widely used for high performance networks and high.

• What is a semaphore?

A semaphore (pronounced uh Sehm Fawr, invented by Edsger Dijkstra) in computer science is a classic form of the protection of shared resources to multiple programming environments like Unix systems, semaphores is a technique for coordinating or synchronizing activities in which several processes compete for the same operating system resources. A process that needs control semaphore resources to determine resource status and then decides how to proceed. Depending on the value found, the process can use the resource or is it already in use and must wait a while before trying again to avoid deadlocks.

• HOW DOES A MOUSE LASER WORK?

A mouse is a type of laser optical mouse. It uses a laser beam that is invisible or almost invisible to the human eye. The laser beam emitted by the moves the mouse with the hand of the user, generating an optical sensor system. Works in conjunction with a system that follows how the mouse has moved by bouncing hundreds images per second, the updating of the mouse position and the subsequent position of the cursor on the screen.

• Who invented the PEN DRIVE?

A pen drive is another term for USB (Universal Serial Bus) flash drive and is basically a storage device data. The pen drive was invented in 1998 by IBM, intended to replace the drive in its ThinkPad line of products. The flash drive was first manufactured by M-Systems under contract to IBM and was called the disg. The disg came in several sizes: 8 MB, 16 MB, 32 MB and 64 MB. Disg Following the launch of a series of key chains of different sizes, types and brands of wine on the market. Pen drives are now used in a wide range of devices such as mobile phones, game consoles and players digital music.

• WHAT IS GOOGLE EFFECT beer?

The effect of beer refers to Google Google trend information about someone who we met for the first time. This usually happens when you drink alcohol, and under his influence, the person is online. By example, I found myself at the bar Geeta ABC for the first time and tells me she works for XYZ Inc. Immediately Upon returning home, I Google their beer using the search string "Geeta XYZ Inc '.

• What is the first SOCIAL NETWORKING SITE?

The first social networking site classmates.com was established in 1995. It introduced the concept of user profiles and of short messages sent and received by friends on the web. The basic objective was keep in touch with old friends. Sixdegrees.com which came in 1997, is considered the first social networking website to have all the features in one complete package.

• WHAT ARE THE APPLETS?

An applet is a small application. Before the World Wide Web, the built programs in writing and drawing applets included with Windows are sometimes called. On the Web, using the Java language, an applet is a small program that can be sent along with a Web page a user. Java applets can perform interactive animations, immediate calculations, or other simple tasks without having to send a user request back the server.

• Bloatware What you mean?

Bloatware, also called junkware, adware and Demoware, refers to software pre-installed and trial software that comes with Windows computers. While it is a ploy to get consumers to buy the software, most users regard it as junk and are confused by different icons or toolbars that appear on their computers. Bloatware can also clog the system and reduce its speed.

• WHAT IS THE theory of time preference interest?

The theory of time preference interest is also known as Agio theory of interest. It was presented by Bohm Bawerk, who said that interest is a Agio (reward) or (premium) for preference time. People prefer current income, current consumption and the satisfaction of current needs, which means that people are eager to spend. To induce delay consumption, must be compensated by payment of interest. People prefer this to the future because the future is uncertain and desires of today can not be satisfied tomorrow. Irving Fisher improve on this, saying: "The rate of time preference measures the rate of interest." The higher the time preference, the greater is the impatience to spend, and therefore, the higher the interest rate, the lower the time preference, the lower the interest rate. According to Fisher, people with low incomes, uncertainty about their future and are wasteful require high interest rate while their opposites low quantity of interest demand.

• WHY BLU-RAY DISC IS BLACK ON TOP?

The Blu-ray technician uses a blue violet) operating at a laser wavelength of 405 nanometers (nm) to read and write data. Conventional DVDs and CDs use red and near infrared laser at 650 nm and 780 nm, respectively. Because Blu-ray data layer near the disk surface, compared with standard DVD, was at first more vulnerable to scratches. The first discs were housed in cartridges protection. Now, rewritable media are spin-coated with a scratch-resistant and antistatic coating, which gives the disc surface color black.

• WHAT IS GOOGLE BOMB?

A Google bomb is an effort to inflate the ranking of search a website for a particular term. Google gives weight to pages with links to a particular page for classification purposes. In the case of Google bombing, pranksters use a phrase to bind to a particular page of your pages several times, to push the page to the top of search results.

• WHAT IS GRID COMPUTING?

Grid computing is a parallel processing architecture in which resources CPU are shared over a network and all machines function as one large supercomputer. A well known example is the current Search Intelligence Extraterrestrial in which thousands of people share processor cycles on your PC without using the search for signs of great sound signals from outer space.

• What is Bluejacking?

Bluetooth is a wireless radio technology that allows computers, cell phones, laptops, etc, to talk to each other in a limited range. Bluejacking is the term based on two words - Bluetooth and a kidnapping. It refers to the sending of anonymous messages unnecessary and using Bluetooth-enabled devices such as a contact.

• Refers PHARMING WHAT?

Pharming involves the diversion of traffic from a special website for a fake one. This is done by exploiting the weaknesses of your site's domain name system server. Pharming poses major problems for businesses and ecommerce sites.

• The amount of data DOES NOT CONTAIN THE INTERNET?

Estimating the Internet contains data is complicated, but some estimates. According to one, the amount equals approximately 500 pages of millions of rupees. Another assesses the total amount of digital data in the world in 2010 would be 12 stacks of pages, each of which would be twice as long as the distance between the Sun and Pluto.

• What is viral MAIL?

A viral email is a string of letters online, which is sent from person to person, almost like the old drums. The term "virus" comes from viruses, ie passing along. Viral emails are generally humorous in nature, a person can send to friends or may be used to spread a message of social significance that can reach all the world quickly These emails are also used for commercial purposes - called viral marketing or advertising.

• WHAT IS THE DIFFERENCE Between a computer screen and a game console?

The main device is a PC keyboard and mouse, while all console systems come play with pads used to control movement within the game. Technically, a computer game can be considered as one composed of a computer controlled virtual universe. A video game is a team game where a video display is the primary feedback, shown on a television screen.

n'wr two services used in India?

i bet m confused CDMA GSM protocol and CSMA / CD, GPRS I bet they wht difference and that the services of R 2 used in India

Division Multiple access code (CDMA) is a method of access to the channels used by different technologies of radio communication. Not to be confused with standards mobile telephony call cdmaOne and CDMA2000 (which are often referred to as "CDMA"), that use CDMA as their underlying channel access methods. One of the concepts basic data communication is the idea of allowing several transmitters to send information simultaneously in a single communication channel. This allows multiple users share a bandwidth of frequencies. This concept is called multiplexing. CDMA employs spread spectrum technology and a special coding scheme (where each transmitter is assigned a code) to allow multiple users to be multiplexed over the physical channel. By contrast, division multiple access time (TDMA) divides access by time, while multiple access frequency division (FDMA) divides it by frequency. CDMA is a form of spectrum dispersed "signaling, since the modulated coded signal has a database much greater bandwidth than the data being communicated. CDMA: - an analogy the problem of multiple access is a room (channel) in which users communicate with each other. To avoid confusion, people could take turns speaking (division time), speak at different pitches (frequency division), or speak in different directions (spatial division). In CDMA, different languages spoken. The people who speak the same language they can understand each other, but not to others. Similarly, in radio CDMA, each user group is assigned a code-sharing. Many codes occupy the same channel, but users only associated with a particular code can understand each other. GSM: - GSM (Global System for Mobile Communications: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. Its promoter, the GSM Association, estimates that 82% of mobile market uses the standard worldwide [1]. GSM is used by more than 3 million people in over 212 countries and territories. [2] [3] Its ubiquity makes international roaming common among mobile phone operators, enabling subscribers to use their phones in many parts of the world. GSM differs from its predecessors in that both signaling and speech channels are digital, and therefore is considered a second generation (2G) mobile telephony system. This has also meant data communication that is easy to incorporate into the system. The ubiquity of the GSM standard has been an advantage for consumers (who benefit from the ability to roam and change providers without changing phone) and also to network operators (who can choose equipment from any of the many vendors implementing GSM [4]). GSM also for the first time a low cost to the company network, alternative to voice calls, short message service (SMS, also called "messages text "), which is now compatible with other wireless standards. Another advantage is that the rule includes an emergency phone number worldwide, 112 [5]. This makes it easier for international travelers to connect to emergency services without knowing the local emergency number. The versions Recent rule is compatible with the original GSM phones. For example, the module 97 of the added standard packet data capabilities, by means of General Packet Radio Service (GPRS). Release '99 introduced higher speed data transmission using Enhanced Data rates for GSM Evolution (EDGE). GPRS General Packet Radio Service (GPRS) is a mobile packet oriented data services available to users of Global System for Mobile Communications (GSM) and IS-136 mobile phones. Provides transmission speeds of 56 to 114 kbit / s. GPRS can be used for services such as Wireless Application Protocol (WAP) access, Short Message Service (SMS) Multimedia Messaging Service (MMS), and for Internet communication services such as email and World Wide Web access. The GPRS data transfer is typically charged per megabyte of traffic transferred, while data communication via traditional circuit switching is billed per minute of connection time, independent of whether the user actually is using the capacity or is in a state of inactivity. GPRS is a best effort packet switched service, as opposed to circuit switching, where a certain quality of service (QoS) is guaranteed during the connection for mobile users. 2G cellular systems combined with GPRS are often described as "2.5G", that is, a technology between the second (2G) and third (3G) generations of mobile telephony. Provides moderate speed data transfer by using unused Time division multiple access (TDMA) in the canals, for example, the GSM system. Originally thought to extend GPRS to cover other standards, but these networks are becoming use the GSM standard, so that GSM is the only kind of GPRS network when in use. GPRS is integrated into GSM Release 97 and newer versions. It was originally standardized by the European Telecommunications Standards Institute (ETSI), but

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D-Link DIR-450 3G Ev-do 4-Port Switch 802.11G 108MBPS Mobile Router List Price: $208.99 Sale Price: $179.95 You save: $29.04 (14%)   Eligible for free shipping! Availability: Usually ships in 24 hours See Reviews For This Product Description D-Link DIR-450 3G Ev-do 4-Port Switch 802.11G 108MBPS Mobile Router Features Wireless Network Standards - IEEE 802.11b, IEEE 802.11g Wireless Data Transfer Rates - 54 Mbps Wireless Frequency Range - 2.4 - 2.462 GHz Security Protocols - 64-bit & 128-bit WEP Networking Standards - IEEE 802.3 Ethernet 10Base-T, IEEE 802.3u Ethernet 100Base-TX

Wilson Electronics 801212 Cell Phone Signal Booster Kit for Vehicle w, Low Profile Antenna - for Multiple Users List Price: $429.95 Sale Price: $269.99 You save: $159.96 (37%)   Eligible for free shipping! Availability: Usually ships in 24 hours See Reviews For This Product Description The Wilson Mobile Wireless 3 Watt Cellular Amplifier has been carefully engineered to significantly improve the performance of your cell phone or wireless data card in mobile applications for any U.S. Cellular Provider (Except iDEN/Nextel). Together with an outside Antenna, the Amplifier's State-of-the-art technology is designed to increase your cellular signal up to 10 times, reduce disconnects and dropouts and increase data communication rates needed for 3G technologies. This unit provides a wireless communication to any cell phone and/or data card within the vehicle and will work for multiple cell phones or data cards simultaneously. The Dual Band Mobile Wireless 824-894/1850-1990 MHz Smart Technology Amplifier kit comes with everything you need, including a 12-Inch Magnet mount antenna our 3 Watt Amplifier, internal antenna, & cigarette lighter power source. Call our fully staffed Tech Department for questions or help at 866-294-1660. Increase your cell phone's signal by up to 25 times with the Wilson Cell Phone Signal Booster Kit. Designed for use in your car, truck, RV, or boat, the booster kit significantly improves your cell phone's performance and signal strength. You'll experience fewer dropped calls, faster data rates, and clearer reception. Also, the booster is powerful enough to improve the cellular signal on multiple phones and data devices simultaneously. Wilson Electronics 801212 Cell Phone Signal Booster KitEverything you need for better reception is included in the box. View larger.It's All About PowerThe primary cause of dropped calls is low signal output power from the cell phone to the cell tower, which limits the phone's ability to communicate with the tower. A typical cell phone provides merely one-fifth of a watt of output power. To address this problem, the amplifier provides up to an impressive three watts of output power. In addition to the power increase from the amplifier, the included magnet mount antenna will increase the phone's output power another 10 times. Used in combination, your phone will get up to 25 times more power over using the phone alone.Enjoy Premium Reception and Fewer Dropped CallsUsing state-of-the-art technology, the Wilson Booster Kit strengthens your cell phone reception and guarantees premium coverage, even when you're traveling in remote areas where only a weak signal is available. The booster kit comes with everything you need for installation, including a high-gain 12-inch magnet-mount antenna that attaches easily to the roof of your vehicle. The antenna is connected via cable to the amplifier, which is housed in a compact metal case that fits neatly under your passenger seat. Also included with the kit is a low profile interior antenna that allows for discreet installation. Setting up the MobilePro takes just a few minutes. View larger.Once installed, the booster kit will amplify the wireless signals of multiple cell phones and data cards within the vehicle, allowing passengers to enjoy excellent reception and data connection simultaneously. You'll experience fewer dropped calls, clearer call quality, and improved data rates--even with 3G technologies. Most importantly, your cell phone's range will increase dramatically, allowing you to make calls from remote areas.Compatible with Most Cell Phone Models and ProvidersThe Wilson Booster Kit is compatible with all US and Canadian cellular providers, excluding iDEN / Nextel / MIKE. This kit also supports CDMA, TDMA, GSM and AMPS cell phone technologies, as well as data protocols such as GPRS, 1xRTT, HSDPA, EVDO and EDGE. The Wilson Booster Kit includes a 30-day money-back guarantee and is backed by a one-year manufacturer's warranty.SpecificationsFrequency: 824-894 MHz / 1850-1990 MHzGain: 40dB / 42dBMax Output Power: 3 wattsMax RF (downlink): +10dBmNoise Figure: 3.5dB nominalFlatness: +/-3dB / +/-4dBIsolation: > 90dBPower Requirements: 6V, 3 A maxConnectors: FME-Male 50 ohmsDimensions: 4.5 x 3.5 x 1.25 inchesWeight: 1.5 lbsWhat's in the BoxAmplifier, outside magnet-mount antenna, low profile antenna, cigarette lighter DC power supply, and installation guide. Cell Phone Signal Booster KitAt a glance:Increase your cell phone signal by up to 25 times in your car, RV or boatPlug & Play Kit--easy installation; everything you need is in the boxImprove cellular signal and data rates for multiple phones and data cardsWorks with 800/1,900 MHz frequencies for all US and Canadian carriers (except iDen/Nextel/MIKE)30-day money-back guarantee and a 1-year manufacturer's warrantyStay connected even in problem areas with limited cell phone coverage. View larger. Features Greatly extends cellular signal range for both voice and data Allows multiple phones and data cards to be used simultaneously Supports CDMA, TDMA, GSM & AMPS, in addition to 3G data protocols such as HSDPA, EVDO & EDGE Up to 3-watts maximum output power Plug-and-play kit ? Everything you need is in the box!

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