I have been unable to confirm it as such, but I’m reasonably confident that this is the PS/2-compatible 4704 emulation keyboard used on various period IBM personal computers when acting as a 4704. Continue reading
This is an “industrial” IBM keyboard. That means nothing about its construction; it is very much the same thing as a 1391401 or other 101-key Model M, but has unique colouring to match IBM industrial computers. Continue reading
1386887 is a 122-key membrane buckling spring (Model M) keyboard, for the IBM 3179 display station (a type of dumb terminal). Continue reading
When someone says ‘Model M’ without further details, this is the keyboard they are talking about: the 1391401. This was my first buckling spring keyboard and it has served well since. It was definitely responsible for a lot of my interest in buckling spring keyboards. Continue reading