2.  Input devices are devices used to input data or information into a computer.

4.  A keyboard is the most common device used to input data into a computer.

5.  The mouse is a pointing device that is used to control the movement of a pointer on the screen to select a task.  NB. A pointer device is an input device that allows the user to control a pointer on the screen.

6.  This is a lever that moves in all directions and controls the movement of a pointer on the computer screen.

7.  This is like an upside – down mouse. Rather than moving the whole mouse to move the pointer on the screen, the user rotates the ball with their thumb, finger or palm.

8.  This is a small, flat rectangular device that is sensitive to pressure and motion.

9.  A light pen is a input device that uses a light- sensitive detector to select objects on a display screen.

10.  This is a touch-sensitive display with which you interact by touching areas of the screen with your finger or light pen.

11.  This is a device that allow users to hand-draw images, animations and graphics with the aid of a stylus pen.

12.  Architects, designers and artist use graphic tablets to create drawings and sketches.

13.  Name the following input device: 2 1 3

14. 4 5 6

15. 8 7 6

16. 9 10

18. 1. 4. 2. 3.

19. 5. 6.

20.  An Optical Mark Reader system detects the position of pencil mark on a page.  OMR is sometimes use to mark multiple choice exam systems.

21.  A barcode reader scans the barcode on a product.  This represents a code number, which is sent to a point of sale(POS) terminal.

22.  A Point of Sale terminal has the same function as a cash register, but it is computerize.

23.  This is use to read numbers on bank cheques.  This input device works by detecting special magnetic ink on cheques.

24.  This device works by recognizing the shape of letters.  It can be found in a scanner.

26.  Biometric systems recognise a person’s physical characteristics, for example reading their fingerprints or iris(eye) scan.  They are mainly use for security purposes, for example, to allow access to banks or military premises.

27.  A sensor is defined as any kind of device that detects a signal in order to create a specific reaction.

28.  A remote control is a component of an electronic device, most commonly a television set, DVD player and home theater systems originally used for operating the device wirelessly from a short line of sight distance.

29. A Braille keyboard is a portable device that is used to by blind or visually impaired people to input information in a computer.