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SB181: A 74LS181 based “logic operator”
https://unimplementedtrap.com/sb181-74ls181-logic-operator
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A sort of 8-bit calculator that takes hexadecimal input and displays the results in both hexadecimal and binary. All done with 74 series logic and no microcontroller or CPU and makes for a handy companion for the 8 bit programmer…
