VB写的教学用的信号频率生成器的源代码，有的称为信号调制模拟器，用来模拟2ASK、2FSK信号的调制过程，可供娱乐或教学；全部用的VB的算法，对学习算法也有帮助 。-The frequency of the signal generator source code written in VB teaching, some called signal modulated simulator, used to simulate 2ASK, 2FSK signal modulation proc