Kinda off the topic
But I spent most of the 70's and all of the 80's doing client server work, way before the LAN got its name. I am speaking about bank teller machine computing (mainly Bunker -- the controller OS loaded from a floppy disk the size of a dinner plate), and ATMs (client ran on a z80 chip similar to the one that powered the "mighty" Sinclair computers). The only new thing about client/server was the name.