On 4/25/23 10:46, Paul Berger via cctalk wrote: > IBM did develop a machine to thread the wires through cores. The cores > where held in place in a tray by vacuum and wires threaded through by > hollow needles to quote the book IBM's Early Computers, "When introduced > in 1959, this core threading machine reduced the time to thread X and Y > wires in a 64x64 plane from 25 hours to 12 minutes" From that quote I > am guessing that the sense and inhibit lines where still wired by hand.
An alternative was to use a simplified threading scheme. I'm still amazed to this day that CDC ECS worked reliably: https://ed-thelen.org/comp-hist/images/50690729-CDC-ExtendedCoreStorage.pdf --Chuck
