This is a guest post by Olger Groen. If you would like to write for ExtremeCircuits, then drop us an email via contact form or simply comment. A long time ago when a parallel printer port was the ...

This is A 8 bit Up/Down Counter that together with the “8 Bit Binary to 256 Decimal (1 of 256) Decoder ” makes a Run Light. I tried to to put all the 256 led’s in one line, but i soon realized that i ...