A one-bit processor explained: reverse-engineering the vintage MC14500B - https://www.righto.com/2021/02/a-one-bit-processor-explained-reverse.html
"The die photo below shows the processor under a microscope. This silicon appears greenish, while the white lines on top are the metal layer that wires the transistors together. The 16 black spots around the edges are the bond wires that connect the chip to its 16 external pins. The MC14500B has roughly 500 transistors, very few for a microprocessor."
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