Input devices are hardware devices used to input data into a computer for processing. Output devices are hardware devices used to output (sound/data etc.) from a computer.
(b) describe suitable input devices for a wide range of computer controlled situations
Examples of input devices are:
- Keyboard
- Mouse
- Microphone
(c) describe suitable output devices for a wide range of computer controlled situations
Examples of input devices are:
- Monitor
- Printer
- Speaker
(d) discuss input and output devices for users with specific needs
Some input and output devices have been developed to suit users with specific needs and disabilities who may not be able to use regular input/output devices.
Input:
- Puff-suck switch- a switch designed for someone with limited physical mobility. It is connected to the computer and the user simply has to suck or puff down the tube to activate the switch.
- Eye typer- This is designed for people who are unable to use a regular mouse or conventional keyboard. A camera is attached to the top of the computer which focuses on the user's eye, mouse clicks performed with a slow blink.
Output:
- Speakers-for people who are visually impaired, text can be converted to speech and output through a speaker by a computer generated voice
- Braille printer- A braille printer uses pins to press raised dots onto Braille keyboard in braille dots to be read by the visually impaired.
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