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The birth of a notion - The ALU

A project log for The Cardboard Computer - IO is my name

My goal is a 4-bit CPU using recycled cardboard substrate and Diode Transistor Logic. This is an educational platform for me.

dr-cockroachDr. Cockroach • 12/22/2016 at 01:44•3 Comments

The cardboard computer started out simply as a 4-bit full adder project that has gotten out of hand. I came across a web site by Simon Inns called waiting for friday. Here are a few pictures of that project that is now the ALU for this project.
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The 4 to 16 line / instruction decoder

12/22/2016 at 02:00 • 1 comment

Discussions

Yann Guidon / YGDES wrote 12/22/2016 at 21:50 • point

And I thought I couldn't be surprised anymore by electronic circuits...

  Are you sure? yes | no

Dr. Cockroach wrote 12/22/2016 at 21:59 • point

I was out of my mind to try wiring that little beast but at least is worked :-) But the decoder was even more of a headache to wire.

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Yann Guidon / YGDES wrote 12/25/2016 at 02:39 • point

I believe you :-D

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