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 process, available for entertainment or teaching　All VB s algorithm on the learning algorithmalso helped.