EDA Electronics cards??? got a bag of them duno what they're from

The form factor matches up to the Vector 22/44 0.156" card edge physical form factor standard. Which doesn't narrow it down at all. Millions of custom industrial systems (some micro-based, but most not) were built using these plugboard style systems from the 60's through the 80's. Vector sold card cages and proto cards; the one-offs usually used the proto cards but something that was made in small to medium quantity might have used a Vector card cage (perhaps hand-wired) and etched PCB's. Sometimes the backplane was a simple bus in the computer sense but usually not. Looking at the chip logos and mix of analog/digital I'd suggest this is from the late 70's/early 80's and is some kind of DAQ front end or perhaps digital-math servo system. You can narrow the date range down from looking at the date codes on the chips.