Input and Output
Devices

Input and Output devices

Computers are used to process data. Input devices are used to provide a computer with data to process, while output devices provide the user with a processed output.

Examples of input devices:

• Keyboards
• Mouse
• Touchscreen (Touchscrene is both an input and output device)
• Microphone

Examples of output devices:

• Monitors
• Speakers
• Touchscreen (Touchscrene is both an input and output device
• Printers

Accessibility:

Designing products in a way so that they can be used by disabled users. Since computers have become such a vital part of our modern lives, computers have become more accessible.

Examples of accessible input devices:

Device	Users	Function
Braille keyboard	Visual problems	The buttons have engravings, which blind users can feel and read. This enables users to know what they are typing.
Foot-Mouse	Mobility problems	This special type of mouse can be operated with a foot. It helps users to navigate interfaces.
Speech-to-text	Mobility problems	Users speak into a microphone, and this software converts what they said into text.

Examples of accessible output devices:

Device	Users	Function
High contract monitors	Visual problems	These monitors display everything with high contrast. This makes things clearer, and easier to see.
Braille printer	Visual problems	They emboss braille onto thick paper, meaning users can use touch rather than sight to read what is being displayed on their screen.
Text-to-speech	Visual problems	Text that is being displayed on screen can be read out loud with this special type of software.