3 ms·
AT&T had https://en.wikipedia.org/wiki/Number_Five_Crossbar_Switching_System https://en.wikipedia.org/wiki/Number_Five_Crossbar_Switching... in 1947. It used re
by cyberax 2y ago
AT&T had https://en.wikipedia.org/wiki/Number_Five_Crossbar_Switching_System https://en.wikipedia.org/wiki/Number_Five_Crossbar_Switching... in 1947. It used relay-driven "markers" to set up a call that goes through various frames.
So it's entirely possible that somebody from the telephone industry decided to borrow a term of art from it for computing.