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Keyboard
by John Anthony


The keyboard was the first input device developed for the PC.

The standard keyboard layout provides 104 keys organized as four groups:

  • alphanumeric keys (A-Z, 0-9)
  • location keys (home, end etc.)
  • numeric keypad
  • function keys (F1-F12)

In addition to the standard keys, some keyboards offer functions such as volume control for speakers, web browser functions and power management.

Data is transferred to the PC over a short cable with a circular 6-pin Mini-din connector that plugs into the back of the motherboard.

Wireless keyboards are available that communicate with a pod that is plugged into the keyboard port.
Radio Frequency(RF) or InfraRed (IR) signals are used to communicate between the keyboard and a receiver pod, which plugs into the PC.

Some newer keyboards have an integrated Finger Tip sensor. Instead of having to type in passwords to access the PC a successful fingerprint match allows entry into the PC or specific programs.
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