Counting is one of the simplest basic operations. In digital logic and computing, the counter is the logic circuit that realizes this kind of operation. In the digital system, the counter mainly counts the number of pulses to realize the functions of measurement, counting, and control.
Digital counter is suitable for measuring the frequency, rotational speed, linear speed and flow of various types of control equipment. 6 digit
Digital Counter, 6 Digit, Frequency/Rev/Speed
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I understand 555 timers but why would I need a much higher
Counters in Digital Electronics