Byte: A basic unit of data manipulated by the computer, usually eight bits. The space required to store a single printed character.
Cable: The transmission link between devices in a computer system.
Cache, cache memory: A fast memory buffer for holding frequently called data.
Compact Disk of CD: A digital disk from which data is read by a special laser. The laser reads binary data as ‘0’s and ‘1’s by distinguishing between microscopic flat and pitted dots on the surface of the disk.
Circuit boards: An insulated card that holds circuits, electronic components and connectors that comprise or drive other computer components such as a communication port, video, a scanner, etc.
Click: To quickly press and release the button on a computer mouse or similar device to place the cursor at a particular position on a document or to make a selection.
COBOL (Common Business Oriented Language): A structured computer programming language for business applications that uses a vocabulary of familiar English words and phrases.
Cold Boot: Restarting a computer that is completely shut down.
Computer Literate: Having a working knowledge of the way in which a computer operates and of at least some of the most popular software programs.
Computer Security: The process of protecting a computer, computer network, or computer programs and data from access by unauthorized persons.
CPS: Characters Per Second; a measure of the speed of an impact printer.
CRT (Cathode-Ray Tube): A type of picture tube used as a computer monitor screen. The image is created by firing beams of electrons at “phosphors” that coat the inside of the tube; the phosphors, when struck, emit a burst of light with a “refresh rate” of 60 times per second or greater, the burst appear to be a steady image.
Dedicated: Set aside for a specific purpose, such as an area in computer memory that us reserved for certain utilities or a transmission line reserved for network communication.
Double Click: To press and release the primary button of a computer mouse twice in quick succession. The double click is used in programs to perform a variety of tasks, such as to highlight a selection, activate a program or to call up a document.
Glitch: A malfunction or error, usually of little consequence.
Graphical User Interface (GUI): A computer monitor screen display that simplify the use of programs and functions by representing them with icons that can be selected with a mouse or other pointing device.
Graphics Card: A removable computer circuit board that provides the means for displaying graphics on a monitor screen. It is the graphics card that determines the resolution of the display, such as for VGA or super VGA, Also called a video card.
Hertz or Hz: One cycle per second.
Hexadecimal: A numbering system in base sixteen used in computer notation. Hexadecimal digits are represented as ‘0’ through ‘9’ and ‘A’ through ‘F’.
High Level Language (HLL): A programming language in which the commands and syntax are somewhat similar to a spoken language. Working in such a language precludes the need for the programmer to have a knowledge of machine language. Writing code for complex program routines is more efficient in a high level language as a single command may replace several commands machine language.
Integrated Circuit (IC): An electronic device that contains number of circuit elements and inter connections.
K (Kilo): One thousand. In binary numbers, used to express 1024.
KB, kb (Kilobyte): One thousand bytes or more specifically, 1024 bytes Kilocycle (kc).
Kilohertz: Kilohertz; one thousand cycle per second.
Kerning: Proportional spacing between typeset characters.