This is my 10-bit relay full adder. It's composed of 6 boards, 90 relays, 96 diodes, 22 capacitors, 32 resistors and 32 LEDs. Being 10-bits, it can add and subtract any whole number between 1 and 1023. There's an extra carry bit LED to show answer larger than 1023.
For more info, check my blog at: [ Ссылка ]
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