Re: VM/CMS
Not quite.
Older IBM mainframe terminals used a beamspring keyswitch. The IBM model F keyboard was a reduced cost version of that (the original IBM PC keyboard and a number of others) and the IBM model M keyboard was a reduced cost version of the model F.
Not that it's a bad keyboard - it's probably the best you can buy new today. Old beamsprings are rather rare, hideously expensive, and require "interesting" methods to adapt to modern computers (replace the controller with an Xwhatsit controller).
Biting the hand that feeds IT
