Counters are often used in loops, such as for loops and while loops, to keep track of the number of iterations that have occurred.
Counters can also be used to count the number of times a specific condition is met or a certain value is reached.
In electronics, counters are digital circuits that are used to count events.
Counters typically contain digital logic that is used to detect and count pulses, and they are used in a variety of applications such as frequency measurement, timing and control, and data collection.
Counters often contain a combination of logic gates and flip–flops, and can be constructed from a variety of logic elements including logic gates, flip–flops, and registers.