SPN 21 Computer Studies- Input devices

Exercise 3

Answer all the questions.

a) State the differences between Manual and Automatic input devices. [5]

b) Discuss the advantages of using keyboard over typewriter. [5]

c) Give the functions for each of the following input devices.

i. Scanner. [2]

ii. Microphone. [2]

iii. Sensors. [2]

iv. MICR. [2]

v. Graphics tablet. [2]

d) Barcode reader is a hand-held or stationary input device used to capture and read

information contained in a bar code.

i. Explain how it works. [5]

ii. Identify the five basic kinds of barcode reader. [5]

[Total: 30 Marks]