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 ;-)