用vc写的DSB调制演示演示程序，这可是在国内不多见！可以看到调制的整个过程。对大学学习如何在VC下进行通信编程有指导意义！-Vc write with a the DSB modulated demo demo program, this is rare in the country! You can see the entire process of the modulator. University learning how the VC communication programming