Updated: 08/03/2018 by Computer Hope
Alternatively known as the Model F keyboard, the AT keyboard is a US standard keyboard introduced in 1986 by IBM.
The original version had 84-keys but was then replaced by the 101-key enhanced keyboard. Unlike new keyboards, the AT keyboard does not include the additional three Microsoft Windows keys now found on many IBM-compatible keyboards.
As shown in the illustration, an AT keyboard may also describe a keyboard that uses the AT (Din5) port. The Din5 Port is rarely used today since most computers use PS/2 or USB keyboards.
104 keyboard, AT, Data cable, Keyboard terms, Motherboard terms, Port, PS/2, USB