COMPUTER TERMS

4. A printed circuit board containing the principal components of a computer or other device, with connectors into which other circuit boards can be slotted.
7. A group of computers that are linked together so they can communicate with one another.
12. The smallest part of a computer graphic image; the pixel is so small that it cannot be seen.
14. A types of non-impact printer that uses laser.
15. The set devices of the computer system that can be physically seen.
16. A pictorial symbol on computer screen that represents a choice of activity.
18. Software designed to allow the input of text to a computer.
22. A measurement of the clarity of an image based on the number of pixel used to create the image.
23. A device that shows the output from a system in picture form; output is short –lived, unlike that from a printer
25. Act of starting a computer by loading part of the operating system.
26. Means Binary digits. Is the smallest unit of a computer memory.
27. A manual device connected as to a video game, with a control lever that can be tilted in various directions to move the cursor or part of the display.
28. A set of instruction for processing data.
30. A device that; allows an image that already exists to be input to the computer so that it can be manipulated using special software.

1. Anyone who uses the computer.
2. A monitor screen that can detect and respond to something, such as a finger or stylus, pressing on it.
3. A device that Resembles typewriter keyboard: is the most common unit for entering data and for coding or using program instructions.
5. A measurement of how much data can be sent along a communication channel at the same time.
6. A code know only by the user that allows the computer to be sure of the identity of the person who is accessing information.
8. A wireless local network that uses radio waves to connect to the Internet.
9. A dedicate device that incorporates all the parts of a processor on a single chip.
10. Approximately 1 billion byte.
11. Black and white bars that we see on most books and consumer goods. They can be read by a Bar Code Reader or Light pen.
13. disk A microcomputer storage device that can typically store between 10 and 100 or more million characters.
17. Output on paper from computer.
19. A computer professional who writes programs, or sets of instruction for each application, debugs, and then documents them.
20. A collection of web pages, normally on a single theme, on the Internet.
21. Device used to produced hard copy output from a computer, usually on paper.
24. The rules guiding the use of a command.
29. One of the earliest known calculating devices on which rows of beads on wires are used to perform mathematical operations.