PC/XT keyboard
83-key keyboard sold with the original IBM PC. The PC/XT keyboard had many of the same features as a standard typewriter at the time, with various changes such as including the 10 function keys. Below is an illustration of what the PC/XT keyboard looked like.
As can be seen by the above illustrations, there are several disadvantages of this keyboard, when compared with the keyboards used today.
Also see: Keyboard definitions