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.