说明：  本程序在WIN-TC环境下用C语言编写的，具体的功能为实现示波器波形的模拟输出，包括锯齿波、三角波、正弦波以及脉冲，并且可以对波形参数进行调整。
(procedures in the WIN-TC environment using C language. The specific function of the realization of the oscilloscope waveform simulation output, including the sawtooth, triangle wave, sine wave and pulse, and the waveform parameters can be adjusted.)