Show threadTommy ThornSep 12, 2023
@matthewvenn Re. #FourPhaseLogic, see also: https://www.righto.com/2020/12/reverse-engineering-early-calculator.html
Reverse-engineering an early calculator chip with four-phase logic

In 1969, high-density MOS integrated circuits were still new and logic circuits were constructed in a variety of ways. One technique was ...

Tommy ThornJan 3, 2023

Finally took the time to watch the talk by Lee Boysel (RIP): https://youtu.be/UpHN0kpukRc - super interesting. He's not as famous as he deserves to be, but he really did create the first microprocessor on a chip and many other things (see, eg. https://www.cpushack.com/2014/08/15/four-phase-systems-al1-processor-8-bits-by-lee-boysel/)

I've always been particularly interested in four-phase logic as it's extremely dense.
KW: #microprocessor #processor #DigitalLogic #FourPhaseLogic #VLSI #Architecture

Lee Boysel – Making Your First Million And Other Tips for Aspiring Entrepreneurs

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