I'm continuing to work on getting my relay computer to do branching (which is when it becomes a 'proper' computer). In my last video I completed the upper controller card and in the video before that I completed the lower controller card. Now it's time to put the upper and lower controller cards together to make the controller unit. Although the computer still needs the decoder card updating to do branching as part of a program I manage to cheat this time and get the computer to do a form of branching for the first time ever.
More on the design of these cards (and the computer as a whole) can be found on my blog at
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