Ac Adapter : External power supply, used by some external peripherals,that concert AC power in to DC power that the peripherals requires





Accelerated Graphics ports(AGP)-: Expensions bus designed by Intel to improve the speed with 3-D graphics and video transmit .



Access providers[/B] : Business that provide individuals and companies access to the internet free or for a fee.

Access Time : Measurement of the amount of time it takes the process to read data, instruction and information from the memory

Accounting Software: Software's that helps companies record and report their financial transactions.

Active-matrix Display : LCD monitors or screen technology that uses aseparate transistors to apply charges to each liquid crystal cell and thus display high quality color that is viewable from all angles.





Adapter: A circuit board that plugs into a computer and gives it additional capabilities.

Adapter Card : Circuit board that enhances functions of a components of a system unit and provides connection to the peripherals.



Add on : Programs that extend the capability of a browser ; often used to enhance the multimedia

Address : Unique number that identifies the location of a byte in memory .

Address Book : List of names and e-mail addresses,created and stored by a user , also called contact folder.

Address Bus : Types of bus (electrical channel) that transfer information about where data should reside in memory.




Advance Transfer Cache (ATC) : L2 cache built directly on the processor chip



Adware : Program that display an online advertisement in a banner or pop-up window on Web pages, e- mail, or other internet services.

Ad-ware Remover: Programs that detects and delete ad-wares from the under computer.

Air Mouse : Motion-sensing mouse that, in addition to the typical buttons , allows to control objects , media players and slides shows by moving the mouse in predetermined directions through the air.



Algorithm: A step-by-step procedure designed to solve a problem or achieve an objective.

All in one devices : output devices that looks like a copy machine but provide the functionality of a printer ,scanner , copy machine and fax machine, also called Multifunction peripherals.



Allocation Unit : Smallest unit of disk space that store data and information.

Alpha Testing: First-stage testing of computer products, typically done in house by the developer.

Alphanumeric: Consisting of letters, numbers, and symbols

Analog : Continuous signals or signal in wave form.

Animated GIF : Animated techniques that combines several GIF images in a single GIF file .

Anonymous FTP:- Features of many FTP sites whereby anyone can transfer some, if not all ,available files.

Anti- spam Program:- Program that remove the spam before it reaches a user's inbox.

Antivirus programs : Programs that protect a computer against viruses by identifying and removing any computer virus found in memory, on storage media and on incoming files.

Applet : A small application, that is, a program designed to perform a simple task. An applet is usually embedded within a larger program or downloaded from the Internet when needed

Application : A program designed to perform information processing tasks for a specific purpose or activity.

Application Service provider (ASP) : Third party organization that manages and distributes software and services on web.

Application Software : programs designed to make users more productive and assist them with personal tasks.

Archive. files compressed for more efficient use of storage space.

Archive CD: CD that stores photos from online photo center i.e jpg file format , usually at a maximum resolution of 7200 pixels per photo.

Arithmetic Logic Unit (ALU ) : Component of processor that perform arithmetic , comparison and other operations.

Arithmetic operations : Basic calculation such as addition , subtraction, multiplication and division.

Artificial intelligence (AI) : Computer systems that attempt to imitate human processes for analyzing and solving problems

APRA : Advance Research Project Agency : Agency of the U.S Department of Defense that built an early computer network called ARPANET .

ARPANET : Network developed by the Pentagon's Advance Research Project Agency that linked scientific and academic researcher across the United States.

ASCII : American Standard Code for information Interchange ; it is seven bit code and most widely used coding system to represent data .

Aspect Ratio : Defines a display 's width relative to its height.

Assembler : program that translates from a symbolic version of instructions into a binary version. The symbolic language that the assembler translates is called assembly language.

Atom : Specification sometime used by content exaggerators to distribute contents.

Audio : Music, speech or any other sound .

Audio editing Software : Applications software that allows a user to modify audio chips , produce studio- quality sound tracks and ad audio to video clips.

Audio Input : Process of entering any sound , such as speech ,music and sound effects , into the computer.

Automatic Teller Machine (ATM) : Special - Purpose terminal, connected to host computer through a network that functions as a self- service banking machine