There is also a fantastic video where Cliff Stoll describes the Friden EC-132 calculator and shows off its acoustic delay line here: https://youtu.be/2BIx2x-Q2f

There is also a fantastic video where Cliff Stoll describes the Friden EC-132 calculator and shows off its acoustic delay line here: https://youtu.be/2BIx2x-Q2fE https://youtu.be/2BIx2x-Q2fE