This may be one of the more ridiculous things I have ever seen…an 8 bit serial computer built ENTIRELY of NAND gates and wire routing…
Crazy attention to detail. If you don’t follow kevtris you should.
What is a NAND computer? Well a quick refresher on digital logic:
There are a few fundamental building blocks to constructing a digital circuit. These are gates, which perform the basic boolean logic operations (OR, AND, NOR, NAND, XOR, NOT) and latches/flipflops which preserve the value of a bit. It turns out that you can build any gate from a NAND gate and so can build flip flops and latches from NAND gates as well. (for more info see: http://en.wikipedia.org/wiki/NAND_logic )
The picture you see below is a whole bunch of NAND gates in discreet logic chips which are wired together to form an entire CPU. The better you understand it the more you will realize how ridiculous it is that someone thought to do it and furthermore how crazy they must have been to actually finish it.