<<< In the Name of God >>> My name is Amirreza Pourkashef. Today I Proud to Present a 4Bit Counter You Don't Know What is it? No Problem Please Download ZIP File and Play the SWF file to show what is it and what it works. Attention! A simple Clock Pulser (555) is Combined to this Circut. *** (DSN) Schematic Design file + (EXE) SIMULATOR Executive file =>Zip File http://betaman.persiangig.com/4Bit%20Counter.zip ICs=2 x 74LS76