LTC Switcher CAD3 ?

It's as nothing compared with your brilliant query about what sort of computer could be built with early 1950's technology. One might wonder why it had to be posted here, rather than directed at the histories of the early 1950's, which talk about the computers which were built with early 1950's technology.

I got to see the remains of CSIRAC in the Physics Department at the University of Melbourne in 1963 - I had to take the Hollerith cards for the Fortran programming course I was doing into that room containing the no-longer working machine, where the cards were picked up and shipped across town every day to the IBM 7040/44 which the University had bought but hadn't then installed on campus.

-- Bill Sloman, Nijmegen

I have a couple 12AX7 "computor" tubes. Flat (not embossed), gray plate, "diamond base" (diamond impression in the center of the glass button base), made in E. Germany. Not labeled Telefunken, but signs point to it. Supposedly tubes like this are ridiculously expensive. I should put them on eBay some time and see what happens.

Tim

Am 08.06.2012 00:30, schrieb Tim Williams:

But Telefunken would be W.Germany.

BTW I had the fun to visit the TWT production in Ulm that used to be Telefunken (now Thales). For me as a RF guy that was kinda wierd.. no semiconductors, no circuits, no boards, only fine mechanics, gas, metals, vacuum, glass, magnets and then, finally, ..... a huge array of SHF network analyzers.

Impressive.

Gerhard

Do an e-bay price search first and pick a starting number (say) in the 60 percentile with a "buy it now" (say) in the 90 percentile.