INPUT DEVICES
THEORY
2. Keyboard
The keyboard is the most common and widely used input device.
It is made up of buttons called 'keys'. The keys are arranged into sections:
- Alphabet keys
- Function or F keys (F1, F2, F3)
- Numeric keys (one set above the alphabet keys and a numeric keypad on the right)
- Arrow keys
- Command keys (insert, delete, home, end, page up/down)
Most keyboards are called 'QWERTY' keyboards. This name comes from the first six letters on the top row of the alphabet keys.
Using a keyboard for too long can lead to health problems such as repetitive strain injury (RSI).
To try to overcome this, different styles of keyboard have been developed, for example, the ergonomic keyboard. They are supposed to put your hands into a much more natural position than a traditional keyboard.
| Advantages of keyboards | Disadvantages of keyboards |
|---|---|
| Most computers come with a keyboard supplied | It is easy to make mistakes when typing in data |
| People are used to using keyboards to enter data, they need very little training | If you can't touch type, it can be time consuming to enter data |
| A skilled typist can enter data very quickly | Keyboards are not suitable for creating diagrams |
| Specialist keyboards are available e.g. ergonomic, gaming keyboards | Disabled people often find keyboards difficult to use |
| Excessive use can lead to health problems such as repetitive strain injury (R.S.I.) |
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: Keyboard