The NAND gate. One gate to rule them all

Re:The NAND gate. One gate to rule them all by timonoko on Tuesday October 05, 2021 @07:49AM (#28758108)

I seem to have learned this shit before there were (affordable) logic circuits. NAND was simply a transistor (or relay (or tube)) with punch of diodes pulling the gate or base down. We learned to use "Karnaugh Maps" to simplify the logic circutry to these bare NANDs. https://en.wikipedia.org/wiki/Karnaugh_map

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Re:The NAND gate. One gate to rule them all by pessimizer on Tuesday October 05, 2021 @08:42AM (#28758579)

> before there were (affordable) logic circuits.

That would have been a good while ago. You didn't build digital stuff out of TTL on breadboards? Now that I'm typing this, I am getting a hint from the parenthetical "(or relay (or tube))" :)

edit: I was personally an innovator of the "WAS" gate. They're made of smoke.

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Re:The NAND gate. One gate to rule them all by timonoko on Tuesday October 05, 2021 @09:19AM (#28759012)

There were American SN7400s in 1974 of course, but they were expensive compared to single transistors. I also remember the Finnish Parliament voting machine, made with transistors and relays around 1968. It was huge incomprehensible mess on hand-wired breadboards. It was easier to make totally new one with microprocessors and printed circuits.

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Re:The NAND gate. One gate to rule them all by pantulis on Tuesday October 05, 2021 @09:54AM (#28759513)

What was a "WAS" gate? Google does not seem helpful here.

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Re:The NAND gate. One gate to rule them all by mikestew on Tuesday October 05, 2021 @10:11AM (#28759739)

I'm going to assume that the WAS gate was a NAND...until the smoke got let out.

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Re:The NAND gate. One gate to rule them all by b1c837696ba28b on Tuesday October 05, 2021 @11:32AM (#28760836)