该程序是基于51单片机的 中断方式测量脉宽的 ,The program is based on 51 microcontroller interrupt pulse width measurement

简易小信号频率计，能完成测量信号的频率、周期、脉宽、占空比，并用1602液晶显示出来。（由按键决定显示的内容）-simple Frequency count

单片机设计的遥控电路，遥控码的脉宽数用红外线接收器解码后送单片机读入，发射时由单片机产生40KHZ红外调制信号送红外线发射管发射-Single-chip design of the remote control circuit, remote control code number of the pulse width decoder using infra-red receiver to read single-chip evacuation, launch generated by sing