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Misc digital PCB

This board is full of 54xx series logic. It’s function is unknown.

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Recent Posts

Harrier GR5 engine diagnostic computer DRU unit teardown
Requesting help via comments / contact me form
Russian Avionics ARK-22 Radio Compass teardown
Vandling / Global NDB-2 aircraft navigation unit teardown
Large 2.3″ 6 digit 7 segment display board for hobbyists

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Adrian Smith on Build a large 6 digit clock using 1.8″ + 0.8″ LED displays and TPIC6B595 shift registers

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