Across
- 4. This is an input device which is used to draw lines or figures on a computer screen. It’s touched to the CRT screen where it can detect raster on the screen as it passes.
- 6. a small handheld device that is dragged across a flat surface to move the cursor on a computer screen, typically having buttons that are pressed to control functions.
- 9. is similar to the upside- down design of the mouse. The user moves the ball directly, while the device itself remains stationary. The user spins the ball in various directions to effect the screen movements.
- 10. what is put in, taken in, or operated on by any process or system.
- 11. a printed circuit board containing the principal components of a computer or other device, with connectors into which other circuit boards can be slotted.
- 13. an object that is used to project rays of light, especially an apparatus with a system of lenses for projecting slides or film onto a screen.
- 14. a machine for printing text or pictures onto paper, especially one linked to a computer.
- 15. an instrument for converting sound waves into electrical energy variations which may then be amplified, transmitted, or recorded.
- 16. a flexible removable magnetic disk, typically encased in hard plastic, used for storing data.
- 19. a pair of earphones joined by a band placed over the head, for listening to audio signals such as music or speech.
- 20. used as a read-only optical memory device for a computer system.
- 22. a rigid nonremovable magnetic disk with a large data storage capacity.
- 23. a panel of keys that operate a computer or typewriter.
- 25. a device for recording visual images in the form of photographs, film, or video signals
- 26. changeable; inconstant.
- 27. A device that converts analog audio signals into the equivalent air vibrations in order to make audible sound.
- 28. relating to, using, or expressed in a system of numerical notation that has 2 rather than 10 as a base.
Down
- 1. A computer monitor is an output device that displays information in pictorial form.
- 2. a small piece, part, or quantity of something.
- 3. display is a computer video display in which each pixel on the screen is illuminated by a tiny bit
- 5. a unit of information equal to one million million (1012) or, strictly, 240 bytes.
- 6. an integrated circuit that contains all the functions of a central processing unit of a computer
- 7. facts and statistics collected together for reference or analysis.
- 8. make a calculation, especially using a computer.
- 10. a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
- 12. a compact disc used as a read-only optical memory device for a computer system.
- 17. an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
- 18. abbreviation for light-emitting diode:
- 19. a high-capacity, self-contained storage device containing a read-write mechanism plus one or more hard disks, inside a sealed unit. Also called hard disk drive.
- 21. determine (the amount or number of something) mathematically.
- 24. is an optical disc format designed to display high definition video and store large amounts of data.