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介绍了具有频率测量、脉冲周期测量、脉冲宽度测量以及脉冲信号占空比测量等功能的数字频率计。设计中使用了 Lattice isp LSI1 0 1 6- 60在线式大规模可编程逻辑器件及 GAL芯片等
A digital frequency meter with the functions of frequency measurement, pulse period measurement, pulse width measurement and pulse signal duty cycle measurement is introduced. Lattice isp used in design LSI1 0 1 6- 60 On-line large-scale programmable logic devices and GAL chips