Editing IBM Personal Computer (section)

=== Human interface <span class="anchor" id="Keyboard"></span> ===
[[File:IBM Model F XT.png|left|thumb|[[Model F keyboard|Model F]] keyboard]]
The only option for [[Human interface device|human interface]] provided in the base PC was the built-in keyboard port, meant to connect to the included [[Model F keyboard|Model F]] keyboard. The Model F was initially developed for the [[IBM System/23 Datamaster|IBM Datamaster]], and was substantially better than the keyboards provided with virtually all home computers on the market at that time in many regards - number of keys, reliability and ergonomics. While some home computers of the time utilized [[chiclet keyboard]]s or inexpensive mechanical designs, the IBM keyboard provided good ergonomics, reliable and positive tactile key mechanisms and flip-up feet to adjust its angle. Public reception of the keyboard was extremely positive, with some sources describing it as a major selling point of the PC and even as "the best keyboard available on any microcomputer."<ref name=":1" />
[[File:Bundesarchiv B 145 Bild-F077948-0006, Jugend-Computerschule mit IBM-PC.jpg|thumb|IBM PC with [[Color Graphics Adapter|CGA]] monitor (model 5153), [[Model F keyboard|original keyboard]], [[IBM 5152|5152]] printer and paper stand (1988)]]
At release, IBM provided a [[Game port|Game Control Adapter]] which offered a 15-pin port intended for the connection of up to two joysticks, each having two analog axes and two buttons. (The early PCs predated the advent of the "[[WIMP (computing)|Windows, Icons, Mouse, Pointer" concept]] and so did not have a mouse.)