Hi For anyone wanting a parallel keyboard for their old project machine or someone wanting to connect to a Polymorphic video board, there is a pair of keyboards on ebay at: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=41… I've bought two of these myself and they are excellent quality keyboards. I have no other connection with the seller. The boards are early 80's vintage and use a 8051 technology. The key field appears to be capacitive so it should last a long time. They run on a single +5V. Dwight