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Input and Output 3
Devices
Goal Glimpse
Input Devices
Output Devices
Storage Devices
A computer is made up of many parts. These parts can be categorised into three
groups:
1. Input Devices Keyboard, Mouse, Scanner, etc.
2. Output Devices Monitor, Printer, Speakers, etc.
3. Storage Devices Hard Disk, Compact Disc, Pen Drive, etc.
INPUT DEVICES
The devices that are used to give commands or instructions to the computer or tell
the computer what to do are called input devices. Some of the input devices are:
Keyboard
Keyboard
A keyboard is an input device that is used to give instructions to the computer by
typing text, symbols and numbers. It has buttons called keys. A standard keyboard
has 104 keys.
Input and Output Devices 27

