Recently I have acquired this keyboard from the land of opportunities - ebay
Thanks to MMcM who shared with me this: https://www.computerhistory.org/collect ... /102672973
I learn that this keyboard was made by NCR, and most importantly the keyboard module is made by MicroSwitch for NCR.
As you can see from the picture the keyboard was filthy when it got to me. The seller prob had it in their shed for many years. I counted three dead bees inside the keyboard. Anyways, I took it apart and clean it as best as I could. Here are the pictures of the keyboard after everything is clean and put back together
I figure my also dusty shed would provide a good background to take some good pics of the board, dont worry as the keyboard is now stored in a a place much better than the seller's shed and mine.
A little tear down of the keyboard
So if you are wondering what is that pig tail dangling on the side of the pcb there? It is an usb cable that i cut up and solder into the pcb to feed power into the pcb and test the convertibility of the switches. The part number of the switches are 1SW11. Thanks to safedork/ dorkvader who has helped me tremendously in testing the switches, I now figure that all these switches are pulse switches. Which is not a terribly good news as it will be very difficult to use this as a modern daily driver since the keyboard would interpret a press and a hold as the same kind of input => no mod keys. I tested thoroughly with my multimeter but as I am very dumb, I could have made huge errors in my testing and these might not be pulse switches. I will work on converting this boi in the near future
Two pcbs are included for this keyboard, one from NCR, one from MS
Last but not least, from the side there is a gap between the top and the bottom case. I can assure you that it is not a defect, or not me not putting the parts back together correctly. It is actually how the case is designed.
