Any idea what these really old PC parts are?

[Terance]

My cousin acquired a few computer parts recently but we have no idea what they are for or how old they are. I was wondering if anyone here would have some information I could pass along to him about these parts. I've added some photos to the following Google Photo Album.

https://photos.app.goo.gl/wCorWDigdJakLkm33

Thanks for any information.

[onetech]

The first empty/plain ones are known as breadboards for circuit designers. Essentially blank canvases for electronic engineering. The last couple boards are from the manufacturing process that never ran through the assembly line and were populated with chips.

All in all, very old style boards probably for some old rack computer system.

[Terance]

Thank you for that information. I had no clue as to what that stuff was.