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Information Communication Technology
Input and Output Devices
Overview
Devices that allow data, in whatever form, to be entered into a computer system are input devices.
Those which allow data to be extracted from the computer are output devices.
Those which store data are known as backing storage. Below are a few examples.
Input Devices
- Keyboard (USB, Cordless Wireless)
- Mouse (PS/2, USB, Cordless Wireless, roller ball, wheel, optical)
- Joystick
- web cam (measured with resolution: 640x480, 320x240)
- Digital Camera (measured in megaPixels: 1.3mp, 3.2mp etc)
- Video Camera
- Scanner (measured with resolution:1200x600dpi, 2400x1200dpi)
- Microphone
- Bar code Scanner
- Digital Tablet and Stylus
- Touch Sensitive Screen
- Sensor
- CD-ROM Drive
- DVD-ROM Drive
Output Devices
- Monitor (crt or tft; measured with resolution:800x600, 1024x768, 1280x1024)
- Laser Printer (black & white or colourmeasured in dpi 600x600dpi up )
- Ink Jet Printer (Colour) (measured in dpi 1200x600dpi up)
- Loudspeaker
- CD-R & CD-RW (measured in megaBytes: 700Mb)
- DVD-R & DVD-RW (measured in gigaBytes: 2.6/4.7Gb)
Backing Storage
- Hard drive (measured in gigaBytes: 20Gb, 40Gb, 80Gb)
- CD-R CD-RW
- DVD-R DVD-RW
- Zip Disk Drive
- Floppy Drive (though holds a very small amount of data)
- Tape streamer
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