Usagi Electric | Vacuum Tube Computer P.14 – Building an XOR Gate to Subtract by Adding (Fixed) @UsagiElectric | Uploaded June 2021 | Updated October 2024, 49 minutes ago.
(This is a re-upload because Youtube somehow managed to freeze about 5 minutes worth audio/video in the previous upload.)

In this episode we continue work on building the unit that’s going to connect the instruction register with the ALU. But, in order to finish it off, we need to build yet another type of logic gate – the XOR gate. Why do we need an XOR gate, well do to subtraction by adding! How does that work, well, that’s what the video is for, haha.

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