实现pwm的频率和占空比可调，是使用ATMEL89s52实现的，用数码管显示。-achieve pwm the adjustable frequency and duty cycle is the use ATMEL89s52 achieve. digital Display.

pic30f6012的pwm调试，可调占空比-pic30f6012I2C

数控脉宽脉冲信号发生器：数控脉宽脉冲信号发生器能够在脉宽控制键的控制下，按确定的步长改变输出脉冲信号占空比，即使脉冲宽度可调，同时以占空比的形式显示脉宽情况。-Digital pulse-width pulse generator: NC pulse width pulse width control signal generator able to control key, press OK steps to change the duty cycle of the output pulse

占空比可调的方波信号发生器，555型集成时基电路结构、工作原理及其基本应用-Variable duty cycle square wave signal generator, when the base integrated circuit 555-type structure, working principle and basic application