由STC89C52控制计数器8253产生步进可调的方波，可以通过配置计数器初值改变输出的方波频率。输出的方波可以作为电机的PWM。-8253 by the counter generate STC89C52 control stepper adjustable square wave, you can configure the counter to change the initial value of the square wave output frequency. Square-wave

8051总线控制8253输出PWM波，T0工作在模式2，T1工作在模式1。keilC程序+proteus仿真。可在示波器上管处啊pwm波的输出状况。-8253 8051 bus control output PWM wave, T0 in Mode 2, T1 work in mode 1. keilC program+ proteus simulation. Management Office in the oscilloscope wave ah pwm output condition.

基于8253单片机的PWM波形发生器的汇编程序-8253 microcontroller based PWM waveform generator assembler