[fasquoika]

It's a way of cold welding wires to the pins of electronics[1]. It's pretty much fallen out of usage as computers have gotten too small for the technique, but it's nice for prototyping because it's easier to undo than solder but more permanent than a breadboard

[1]: https://en.wikipedia.org/wiki/Wire_wrap

[blacksmythe]

  >> easier to undo than solder

Bonus fun - there would almost always be multiple wiring errors to find after wirewrapping.

You start with empty wirewrap sockets, wirewrap the board, then 'buzz' the board with an audio buzzer to check every connection, then add the electronic chips, then start debugging the circuit.