Recommended · for some experience
So how does a PS/2 keyboard interface work?
Why people recommend it
Often suggested for understanding how keyboards talk to a host, with Ben Eater walking through the clocked PS/2 signalling and the codes sent for each key.
Watch for: PS/2 runs at 5V, so 3.3V boards need care
In their words
(See, for example, [video] where someone goes through how to plug a PS/2 keyboard into their breadboard 6502 computer.)
Bryan Kadzban on electronics.stackexchange.com, May 2021. CC BY-SA.
