计算机控制系统的过程通道分为四类：模拟量输入通道、模拟量输出通道、数字量输入通道和数字量输出通道。 -Computer control system process channel into four classes: an analog input channel, analog output channel, the digital quantity input channel and digital output channel.

文件用于数字通信信号的调制方式识别，包含调制信号的产生，模拟通信信道，以及特征量的计算（共5个特征量，分两个程序计算），最后是信号调制方式的识别。-Files for digital modulation recognition of communication signals, including modulation signal generation, Simulation communication channel, and the calculation of features(a t