The keyboard is one of the input devices are often used, with technology develops further on the PC keyboard is also increasingly developed. There are 4 types of keyboard is the most commonly used are:
- Original PC or XT keyboard (83 keys)
- AT original keyboard (XT + Sysreq for OS / 2 + 10 function keys)
- 101-107 key PS / 2 keyboard (AT + function keys F11 and F12)
- 79 Keyboard, 82 keys for Notebook (Laptop)
The big difference between XT and AT keyboards are:
- put XT keyboard microprocessor inside the keyboard,
- AT keyboard, a microprocessor is assumed to be on the mainboard.
In general the two are not compatible, XT keyboard can not used on the AT and vice versa. Keyboard 102 key (standard) can work on different computers without modification
Latest style keyboard or commonly called the multimedia keyboard generally have several keys that can increase the speed work, like windows key, menu key, sound control, IE key, etc.. Several key with the help of drivers and special software to display the work that often we do or programs that we choose. Key is usually called hotkeys.
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