The 5-pin DIN keyboard connector used with the first IBM PC (1981) and second-generation IBM AT (1984). It was subsequently replaced with the smaller 6-pin Mini-DIN connector on the IBM PS/2 in 1987.

And there's worse news. If you can find one, the [80286-based IBM] PC/AT keyboard uses a 5-pin DIN connector, which only requires a passive adapter to convert to PS/2 format. "The original [IBM ...

At the time, most non-IBM PCs used the old 5-pin AT keyboard connector of the 1984 IBM PC/AT. Since 1987, however, IBM used the 6-pin so-called PS/2 connector for its keyboards. (The PS/2 ...

The FireWire connector is gone, giving way to an IBM proprietary power jack for the external optical drive. There remains one PC Card slot and an SDIO slot that works with both flash memory cards ...

PC keyboards also work on the Mac. Since the IBM PC debuted in 1981, there have been four standard keyboard layouts, each one rearranging commonly used keys that annoy users to this day.

Only a well-trained ear might be able to hear the difference between a generic keyboard and the IBM Model F keyboard ... 600 to make when you were buying a computer that was $5,000.

The Apple II had been unusually well designed and well made by 1970s standards, but the IBM PC was markedly better. The detached keyboard was a delight, to the point where I started buying IBM ...