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Most commonly used abbreviations and Computer terms


BIOS: This is the Basic Input Output System which controls the computer, telling it what operations to perform. These instructions are on a chip that connects to the motherboard.

CPU: The Central Processing Unit of the computer. This also called the computer brain.

Wi-Fi: Wireless Fidelity, a facility allowing computers, smartphones, or other devices to connect to the Internet or communicate with one another wirelessly within a particular area.

WLAN: Wireless Local Area Network is a wireless distribution method for two or more devices that use high-frequency radio waves and often include an access point to the Internet.

USB: Universal Serial Bus connects peripheral devices such as flash drives, keyboards, printers, scanners, external hard drives and digital cameras.

LCD: Liquid Crystal Display is the technology used for displays in notebook and other smaller computers.

CRT: Cathode Ray Tube is a specialized vacuum tube in which images are produced when an electron beam strikes aphosphorescent surface.

VGA: Video Graphics Array  refers specifically to the display hardware first introduced with the IBM PS/2 line of computers in 1987, but through its widespread adoption has also come to mean either an analog computer display standard, the 15-pin D-subminiature VGA connector or the 640x480 resolution itself.

LED: Light-Emitting Diode, a semiconductor diode that glows when a voltage is applied.

LAN: Local-Area Network is a computer network that spans a relatively small area. Most often, a LAN is confined to a single room, building or group of buildings, however, one LAN can be connected to other LANs over any distance via telephone lines and radio waves.

HTML: Hypertext Markup Language, a standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages.

XML: Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.

SQL: Structured Query Language) is a special-purpose programming language designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).

MBPS: Broadband speeds are measured in 'megabits per second', often shortened to Mb or Mbps.

SATA: Serial Advanced Technology Attachment. The current standard technology for connecting a hard drive

SSD: Solid State Drive, a storage device containing nonvolatile flash memory, used in place of a hard disk because of its much greater speed

CD: A compact disc is a small, portable, round medium made of molded polymer (close in size to the floppy disk) for electronically recording, storing, and playing back audio, video, text, and other information in digital form.

VCD also called video CD, video compact disc is a compact disk format based on CD-ROM XA that is specifically designed to hold MPEG-1 video data and to include interactive capabilities.

HDD: hard disk drive is the mechanism that controls the positioning, reading and writing of the hard disk, which furnishes data storage.

PATA: Parallel Advanced Technology Attachment  is a standard for connecting hard drives into computer systems. As its name implies, PATA is based on parallel signaling technology,

HTTP: Hypertext Transfer Protocol is the set of rules for transferring files (text, graphic images, sound, video, and other multimedia files) on the World Wide Web.

AVR: Automatic Voltage Regulator, AVR is a hardware device used to maintain a voltage to electronic devices. 2. Short for Automatic Voice Recognition, AVR is the ability of a computer or other electronic device to identify and understand human voice.

UPS: Uninterruptible Power Supply is a device that allows a computer to keep running for at least a short time when the primary power source is lost. It also provides protection from power surges.

IP: Internet Protocol address is a numerical label assigned to each device (ex., computer, printer) participating in a computer network that uses the Internet Protocol for communication.

ISP: Internet service provider is a company that provides individuals and other companies access to the Internet and other related services such as Web site building and virtual hosting.

GIF: Graphics Interchange Format, is a bitmap image format that was introduced by CompuServe in 1987 and has since come into widespread usage on the World Wide Web due to its wide support and portability. An Image on the web that moves.




PNG: Portable Network Graphics is a file format for image compression that, in time, is expected to replace the Graphics Interchange Format (GIF) that is widely used on today's Internet.

JPEG: Joint Photographic Experts Group, the name of the committee that created the JPEG standard and also other still picture coding standards.

URL: Uniform Resource Locator. It is the address of a web page. Each page has its own unique web address (URL). This is how your computer locates the web page that you are trying to find.

PDF: Portable Document Format is a file format that has captured all the elements of a printed document as an electronic image that you can view, navigate, print, or forward to someone else

UTP: Unshielded twisted pair is the most common kind of copper telephone wiring. Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company.

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