Thesanga Abayasinghe 9E

2. Printers that create real-life versions of digital models
5. Only readable when the correct PIN is entered in to the reader
10. A device that converts an electrical audio signal into a corresponding sound
14. an output device that allows users to see the output from the computer on an electronic display
15. a device’s ability to connect to networks and other devices.
16. this interface is controlled by the user giving spoken commands to the device.
18. this interface is controlled by the user by swiping their fingers on the screen or across the screen.
22. used to make a device inactive so that it requires a password or PIN to reactive it
23. the memory in the computer system which is used for running software.
24. a bar code reader is an example of what type of a device?
25. A type of security to prevent unauthorized access to data.
26. A type of printer that contains a rotating cylinder that holds an electrical charge.
28. one or more Central Processing Units that carry out software instructions
29. a user interface controlled by entering text instructions
30. an output machine which makes a representation of graphics or text, usually on paper

1. control devices are also known as this
3. type of barcode
4. an output device which is used for printing plans, maps, line diagrams and three-dimensional drawings
6. An optical device that projects an image onto a surface
7. Dot-matrix, Inkjet and Laser are all types of which computer peripherals?
8. What is a device that converts computer output into a form that can be transmitted over a telephone line?
9. type of touch screen
11. specialized cameras
12. a scanner that requires a microphone
13. a user interface controlled by a pointer on the screen
17. Another name for dot matrix printers
19. senses finger movements, touches and presses
20. Used to select displayed objects
21. A computer security system
27. A pair of earphones joined by a band placed over the head, for listening to audio signals such as music or speech