http://www.allaboutcircuits.com/vol_4/chpt_13/5.html This counter thing. Can somebody explain to me what does it mean to count up? How does a device count "up" :D I know what a clock does, it sends periodic pulses. I belive the idea is, based on much impulses were counted, that would be the output. I.E. if a voltage level of 5V has 125 impulses that is the binary word lets say 11111101?