A keyboard is
the set of typewriter-like keys that enables you to enter data
into a computer and other devices. Computer keyboards are similar to
electric-typewriter keyboards but contain additional keys. External
input device used to type data into some sort of computer system whether it be a mobile device, a personal computer, or another electronic machine .There
is no standard computer keyboard, although many manufacturers imitate the
keyboards of PCs. There are actually three different PC keyboards: the
original PC keyboard, with 84 keys; the AT
keyboard, also with 84 keys; and the enhanced keyboard, with 101 keysIn addition
to these keys, keyboards usually contain the following keys: Page Up,
Page Down, Home, End, Insert, Pause,
Num Lock, Scroll Lock, Break, Caps Lock, Print Screen.
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