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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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29th Dec 2021, 10:53 am | #1 |
Heptode
Join Date: Jul 2016
Location: Portland, Dorset, UK.
Posts: 870
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Russian Autodialer
Mikeselectricstuff recently uploaded a video where he shows of a vintage (80's?) telephone autodialer, the kind where you program in numbers you call often to save time/errors when making calls.
Now the interesting thing here is that it uses core rope as the storage medium 9the the permenant memory of the apollo flight computer). This is accomplished by having 7x4 coils to allow for 7 numbers per button to be stored. Basically how the programming works is that there are 40 wire sockets at each end, one for each preset, and each row of 4 coils makes a number dependant on which coils a wire passes between the two sockets (like binary notation), with the same piece of wire going through the other rows as required to make up the stored number. https://www.youtube.com/watch?v=tPT6nIRFI_I |
29th Dec 2021, 1:49 pm | #2 |
Guest
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Re: Russian Autodialer
Brilliant, no chance of the numbers being lost!
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