在keil编辑环境下完成了等精度脉冲宽度（时间间隔）的测量，该程序的硬件平台是用at89C52单片机和CPLD（epm7128slc84）以及液晶组成-The keil completed the editing environment such as precision pulse width (time interval) measurements, the program' s hardware platform is at89C52 MCU and CPLD (epm7128slc

用verilog编写的，通过对时钟脉冲计数来记录脉冲宽度-measure pulse width