For interest's sake, the EDSAC reconstruction[1] will be using taut-wire delay lines in a similar way as a replacement for the original mercury-filled tubes. We

For interest's sake, the EDSAC reconstruction[1] will be using taut-wire delay lines in a similar way as a replacement for the original mercury-filled tubes. We very nearly revisited the delay line "juggling" memory a while back when it seemed that magnetic bubble memory might be the solution to all of our woes. (Then flash happened.) [1]http://www.tnmoc.org/special-projects/edsac/recreating-edsac http://www.tnmoc.org/special-projects/edsac/recreating-edsac