chip on board 9 Articles . ... This image shows those connections which use magnet wire on a DIP breakout board. [Jason] used epoxy to glue the wafer down before grabbing his iron.

Chip On Board The bare chip is adhered and wire bonded to the board, and an epoxy is poured over it to insulate and protect it. For illustrative purposes only, ...

The chip had helper hardware on board to drive the 7-segment displays from simple BCD. I once had an old LED calculator, well, a couple, that took a second or more to do complicated sums. But yep ...