Input Devices

3. tiny elements on an image made of red, green and blue color
7. a display device that allows the user to interact with a computer by using the fingers or stylus
10. a type of screen where a finger close to screen effect the electric field between the inner and outer glass
12. coverts an analogue signal to digital
13. an actuator that is powered by mineral oil or water
15. used to scan a solid object and produce a 3D image
16. electrically activated valves, typically used to control the flow or direction of air or liquid
17. a device that detects some type of input from the physical environment
18. builds up an image of a solid object through a series of very thin slices
19. an injury caused by the repetitive motion and extended use of a device
20. entering text into a Word or Google document
22. made up of a matrix of filled-in dark squares on a light background

1. an actuator is a device that makes something move or operate
2. an actuator that is powered by compressed air
4. used to point and select text on a document
5. input a user’s voice into a computer
6. is an electromagnetic switch. It is used to turn on or off a circuit by a low power signal
7. upside-down mouse with an exposed protruding ball
8. this is used to recognise and display information about a vehicle
9. reads a series of dark and light parallel lines of varying thickness
11. are devices used to put information into and get information out of the computer
14. a type of screen where a push by the finger on the screen completes the circuit of two conducting layers
21. converts a hard copy document into an electronic form to be stored into the computer