C
1. Cache Memory
A small high speed memory that is used to increase speed processing by making current programs and data available to CPU at a rapid rate.
2. CDV (Compressed Digital Video)
Video files are compressed to enable them to be transmitted from A to B quickly. A technology which is prominent on the Internet. Central Processing Unit.
3. CGA (Colour Graphics Adaptor)
A video adaptor introduced by IBM in 1981. A CGA Monitor can display 640X200 pixels using 2 different colours or 320 X 200 pixels using 4 colours.
4. CGI
Common Gateway Interface Scripts are used by Internet programmers to perform basic functions such as counting the number of times a Web Page is accessed.
5. Chip Set
A group of PC chips which work together to perform a specific set of task.
6. CMOS (Complementary Metal-Oxide Semiconductor)
It is a special Ram Chip which stores vital settings about your PC such as the size of the Hard Disk and the amount and type of Memory. This information is stored even when the PC is switched off.
7. Controller
A circuit board which links the Hard Disk and the Motherboard. When access to information on the hard disk is requested by The Operating System, the controller tells the Hard Disk to get to work. With IDE Hard Disk, the controller is built into the Hard Disk itself.
8. CUI (Character user interface)
CUI uses only commands. It is not very friendly. A user has to given all the instructions in commands and therefore in such interfaces only the keyboard is used to input the data while mouse is not used. DOS is a very good example of CUI.
9. Circuit switching
The simplest method of data communication in which a dedicated physical path is established between a sender and receiver nodes through switching nodes of the network for the duration of data exchange.
9. Communications satellite
A microwave relay station precisely positioned 36000 kms. above the equator with an orbit speed that exactly matches the earth’s rotation speed. It enables data transmission between any two randomly chosen points in a very large area.
10. CISC (Complex Instruction Set Computer Architecture)
An architecture of· CPUs with large instruction set, variable-length instructions, and a variety of addressing modes.
11. CAM (Computer Aided Manufacturing)
Use of computers to automate manufacturing operations.
12. CODASYL (Conference on Data Systems Languages)
A committee of computer users, manufacturers, and the United States government, which helps to establish programming standards for various programming languages.
13. Cryptography
A means of protecting private information against unauthorized access in those situations where it is difficult to ensure access control. The basic idea behind this security technique is that if it is not possible to ensure access control, it is better to prevent comprehension of information.
14. CMOS Chip
When the computer is turned off, the power supply stops providing electricity to the motherboard. When the computer is turned on again, the system still displays the correct clock time. This is because the CMOS chip saves some system information, such as time, system date and essential system settings. CMOS is kept powered by a button battery located on the motherboard. The CMOS chip is working even when the computer power is switched off.
