Input Devices

Input Devices

1. Keyboard

   • A keyboard has keys that are labelled with characters set out in a pattern.
   • It is used to enter characters such at letters, punctuation marks, numbers and symbols.
   • It can be used to enter commands into a computer or for typing letters, memos, reports or entering data into spreadsheets or databases.

2. Specialist Keyboards

   • Specialist keyboards have keys labelled with characters set out in a different pattern from an ordinary keyboard or with the raised marks of Braille to enter characters.
   • Specialist keyboards can be; designed for disabled users, for example; Braille keyboards for the visually impaired.
   • Engineering keyboards for specialised character entry.

3. Mouse

   • Used to move to a pointer on screen and has one or more buttons that are clicked to choose items from an on-screen menu.
   • Select items by clicking.

4. Microphone

   • Convert sounds to electrical signals which can be digitised.
   • Used when talking on a mobile phone or when using videoconferencing or audio chat.