Old calculator with reverb ram
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12-01-2017, 04:33 PM
Post: #2
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RE: Old calculator with reverb ram
Very nice find.
Delay line memories were common in the 60's, before integrated circuits were invented by Texas, as a cheaper and smaller size alternative to use flip-flop circuits that would take at least two huge sized germanium transistors per each memory bit cell. Probably the first ever RPN electronic calculator? Jose Mesquita RadioMuseum.org member |
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