Took apart a 1990s industrial robotics controller. Damn that’s a lot of logic gate chips.
Board 1
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Nothing but solder on the bottom. Low telecom?
Board 2
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High telecom?
Board 3
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I suppose this is midgrade as is. What grade will it be if I remove the transformer, giant capacitors, resistor, and green box?
Board 4
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Low or high peripheral?