Introduction - If you have any usage issues, please Google them yourself
Lane used microcontroller, two counters, as well as D flip-flop on the measured signal pulse with the standard signal pulses using single-chip, two counters, as well as D flip-flop on the measured signal pulse with the standard signal pulse, at the same time counting, frequency measurement realize function. In ensuring product quality and enhance the functions of the product while reducing production costs, simplify the design of products.