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August 14, 2017 - Another register

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 08/14/2017 at 11:363 Comments

Another register to build, oh what fun. Anyway, this is what I have been up to for the past few days.


Start off with a pile of Nand gates. Sixteen in this case for a four bit register using D latches.


The four bare boards.


This is one finished and working D latch. Funny how I get it to fit in my hand now but in a chip you would need a microscope to see it :-)


Now all four bits are finished and I decided to mount them stacked :-)

Look Ma, the magic smoke is still inside the parts :-) I did find one open solder connection but not bad for my style of wiring ;-)

Discussions

Morning.Star wrote 08/19/2017 at 07:04 point

That looks like a futuristic city my friend, outstanding. Can almost see the electrons going about their business lol. Great design choice I reckon ;-)

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Martian wrote 08/16/2017 at 15:24 point

Looking good ☺️

Every time my projects run into walls, I like to check in on your progress for some inspiration.

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Dr. Cockroach wrote 08/16/2017 at 15:33 point

Thanks Martian, I am hoping my progress picks up as I have been hitting a few walls myself :-) Glad it helps your inspiration :-)

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