通过对其编程可输出RGB三基色信号和HS 、VS行场扫描同步信号。当 CPLD接受单片机输出的控制信号后，内部的数据选择器模块根据控制信号选通相应的图像生成模块，输出图像信号，与行场扫描时序信号一起通过15针D型接口电路送入VGA显示器，在VGA显示器上便可以看到对应的彩色图像。-Through its programming output RGB trichromatic signals and synchronization signals HS, VS line field scanning. CPLD to accept the the microcontroller output of control signals, internal data selector module based on the control signal strobe the corresponding image generation module, the output image signal, together with the horizontal and vertical scanning timing signal via the 15-pin D-type interface circuit into the VGA monitor. can see the corresponding color images on a VGA monitor.