c51用串口通信源码,包括调试 1.发送：向总线上发命令 2.接收：从总线接收命令，并分析是地址还是数据。 3.定时发送：从内存中取数并向主机发送.-decoder serial communication with the source code, including a debugger. Send : Bus made to order two. Acceptance : Bus from receiving orders and analysis of data or add

利用4个数码管给单片机附一个值，单片机读出该地址下的内存数值并且显示在数码管上。-The use of four digital tube to the single-chip microcomputer with a value, single-chip microcomputer read the address of memory numerical and displayed in digital tube.