Computer hardware is the collection of physical elements that comprise a computer system. Computer hardware refers to the physical parts or components of a computer such as monitor, keyboard, hard drive disk, mouse, printers, graphic cards, sound cards, memory, motherboard and chips, etc all of which are physical objects that you can actually touch..
An input device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system ..
Input devices:
- Keyboard
- Mouse
- Tracball
- Touchpad
- Scanner
- Microphone
- Optical Drive
- Touch Display
- Card Reader
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information..
Output devices:
- Monitor
- Printer
- Plotter
- Fax Machine
- Speaker
- Headphone
- Projector
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