Agilent 功能发生器用VB写的方波发生器-Agilent function generator written in VB square wave generator

用VC++MFC编写的上位机软件，它可以通过rs232串口接收下位机发送来的数据并实时显示，还可以对波形作频率幅度检测，可以保存和回读波形。-Prepared using VC++MFC software, it can be through the RS232serial port to receive the client to send data and display in real time, but also on the wave frequency amplitude detec

单片机利用SPI总线实现芯片的功能，从而产生阶梯波-MCU SPI bus chip, resulting in the step wave