output passage

The design problem aimed at currently 51 system planks to output passage,this design with hardware intensive,high performance-price ratio,operation easy is principle,the ISP download,intensive output,switch signal output,imitate signal output electric circuit are designed.

针对目前51系统板输出通道的设计问题,该设计以硬件集约、性价比高、操作容易为原则,创新设计了ISP下载、集约型显示输出、开关信号输出、模拟信号输出等电路。