ripple_counter

Counting in binary
Counters are one of the simplest digital systems. The binary counting sequence is shown on the right.
Each flip-flop changes periodically from 0 to 1 and back again — in other words, they toggle.
Each column changes at half the speed of the column on its right, so counting is closely related to dividing by 2.
CBA0000010100111001011101110


