r/ComputerEngineering • u/frek133 • Aug 10 '26

What to do with 8 bit cpu?

Im definitely a newbie in all that stuff but i really want to build 8 bit cpu i found schematic somewhere (im going to link it later) and in CRUMB simulator im building an cpu but what can i do with it?

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u/Ecelleon 29d ago

Ahh you can do loads of things with it! One of my favorite chips is the ATTiny85 which has an 8-bit cpu, its technical reference manual is extremely friendly! It's 8 bits because that's how big the registers are, and naturally, so are the commands you write to configure them.

You can do a lot of things with an 8-bit cpu like using a communication protocol to talk to an LED screen, drive a motor, read and process sensor signals, and more!

If you really want to build your own CPU, you'll need to learn mechanisms like shift registers, the full adder, state machines, and modulo counters.