![binary counter wave form](http://www.resistors-and-diodes-and-picchips-oh-my.co.uk/wp-content/uploads/2011/03/binary-counter-wave-form-150x150.jpg)
I wanted to create a couple of circuits using 555 timers and 4017 decade counters but I seem to have hit a brick wall in trying to obtain any 4017s! Rapid look through equivalent chips with Dean and it looks like I can use a 4028 chip instead. A 4028 is officially known as a BCD […]