In other words, pulse width modulation is a modulation technique for generating variable width pulses to represent the amplitude of an input analog signal or wave.
或者换句话说，脉宽调制是一种调制技术，为发电可变脉冲宽度为代表的幅值输入模拟信号或波。
Pulse Width Modulation, or PWM, is a technique for getting analog results with digital means.
脉冲宽度调制或PWM，是通过数字均值获得模拟结果的技术。
The principle of converting analog signals to digital signals bacame popular with the introduction of pulse code modulation ;
随着脉冲编码调制技术的出现，把模拟信号转换为数字信号的原理得到广泛应用；
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