STC12C5A系列单片机PWM测试程序。用一参数设置脉冲宽度，数越大，低脉冲越大。已通过。-STC12C5A MCU PWM test program. Parameter settings with a pulse width, the greater the number, the greater the low pulse. Has passed.

使用12c5a的定时器制作的PWM输出，可以多个频率调节、占空比调节等-Use of 12 c5a timer, PWM output, adjust multiple frequency and duty ratio adjustment, etc