Description: A digital fi equeney meter designed with FPGA development software Q-~ us 11 is introduced. The 1 Hz-l MHz input measured pulse signals of the digital ii equency meter can be used for measuring frequency, period, pulse width and duty ratio, etc. The test results stably display O71 3 seven-segment numeric tubes, and the measuring ranges may be switched over automatically. The measuring error is equal to or less than 0.1.
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