13 Dec
2022
13 Dec
'22
11:02 p.m.
Douglas McIlroy [13/12/2022 16.10]:
A delay line is logically like a drum, with
circulating data that is
accessible only at one point on the circle. A delay line was
effectively a linear channel along which a train of data pulses was
sent. Pulses received at the far end were reshaped electronically. and
reinjected at the sending end. One kind of delay line was a mercury
column that carried acoustic pulses.
And according to Alan Turing, it might have been implemented with Gin
and Tonic.