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Digital-frequency-meter
- 采用VHDL设计的数字频率计系统,测量频率范围在1HZ---10Khz,带有超量程报警和数码管分时扫描电路-VHDL design, digital frequency meter, measuring the frequency range of in 1HZ--- 10Khz, with over-range alarm and digital control of time-sharing scanning circuit