[SoftTalker]

Old minicomputers had toggle switches on the front panel where you could set the program counter, enter machine code instructions, and other things, as well as step the clock.

https://thumbs.worthpoint.com/zoom/images2/1/0619/05/vintage...

[stonethrowaway]

Image no longer works. Reupload?

[SoftTalker]

It's not my site. It's the front panel of a Texas Instruments model 980. It's from this page.

https://www.worthpoint.com/worthopedia/vintage-ti-980-ttl-ba...