在计算机直接数字控制系统中，PID控制器是通过计算机PID控制算法程序实现的。

In the direct numerical control system of the computer, PID controller is realized by the PID controlling algorithm procedure.

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在较短时间内，当时所有主要的机床生产商都生产了一些数控机床，但直到20世纪七十年代后期，基于计算机的数字控制才被得到广泛的使用。

In a short period of time, all major machine tool manufacturers were producing some machines with NC, but it was not until the late 1970s that computer-based NC became widely used.

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