1960's Mechanical Keyboard Invac Photoelectric mechanical with Nixie Tubes IBM For Sale

1960's Mechanical Keyboard Invac Photoelectric mechanical with Nixie Tubes IBM
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1960's Mechanical Keyboard Invac Photoelectric mechanical with Nixie Tubes IBM:
$1500.00

1960's Invac Photoelectric keyboard for IBM terminals.


This is the only photoelectric mechanical keyboard ever made as Invac had the patent on it's unique light sensing switches.  The inner workings of it are incredibly complex.  It was designed to connect to early IBM terminals.  My understanding is that the mechanical system was also designed to minimize human error, which mechanically prevents you from pressing keys in a wrong sequence, in some cases.


This is the single coolest and rarest keyboard in my collection after collecting vintage mechanical keyboards for 2 decades. It's been on my desk at work for the last 10 years and it's the only 1960's keyboard I've been able to acquire.  The 1970's are near impossible but 1960's simply don't exist.  They're all in museums or were recycled long ago.  Hand routed PCBs, Nixie Tubes and mechanical wizardry that always reminded me of a German enigma machine. 


I always wanted to use a teensy or arduino unit to make the Nixie tubes display digits as a clock or date/calendar but used it as a conversation piece for hundreds of people over the years on my desk.


Feel free to make an offer. Thanks


Brochure for a similar unit without the cool Nixie display info on photoelectric / optoelectric



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