Computer Input Devices

Many input devices can be classified into two:

Ø  Modality of input( e.g mechanical motion, audio, visual etc)

Ø  The input is discrete (keyboard) or continuous (mouse’s position)

TYPES OF INPUT DEVICES

1. Modern Input Devices

a.       Camera

b.      Compact disc (CD)

c.       Keyboard

d.      Mouse

e.      Scanner

f.        Joystick

g.       Barcode Scanner

h.      Microphone

i.         Etc.

1. Earliest Input devices

a.       Punch Card

b.      Card Reader

c.       Punched paper Tape

d.      Magnetic Tape unit

e.      Optical Character Recognition

f.        Etc.

THE KEYBOARD

The keyboard is an input device which is used to input data into the computer system. Keyboard remains the most vital interface between the user and the computer. It is the most common input device for entering data into the computer. Keyboard is an electronic device with several groups of keys electronically linked to the processor when attached to a computer system.

TYPES OF KEBOARD

There are two main types of keyboard

1. Standard keyboard
2. Enhanced keyboard

Features of Standard keyboard

1. It has 10 function keys
2. It has four arrow keys
3. It has 84-89 keys in all

Features of Enhanced keyboard

1. It has 12 function keys (F1-F12)
2. It has 8 arrow keys
3. It has 101-105 keys in all

ASSESSMENT

Assessment

1. Define Input device

2. Give examples of input device

Assignment

Make a research online about features of mouse and keyboard