单片机IO口模拟串口（接收+发送）

环境：STC单片机+KEIL2

使用单片机的IO口模拟串口。其中分别包含模拟串口接收数据和模拟串口发送数据两个测试程序。

另外，程序附加说明中对网上流传的一个不错的模拟串口代码提了一些改进建议，并说明了测试程序应用于实际工程需要注意的几个地方。-Simulation of Single-chip Serial IO port (receive+ send) Environment: STC Single-chip MCU+ KEIL2 use analog serial IO port. , Respectively, which includes analog and analog serial serial receive data of two test procedures for sending data. In addition, the annotated program circulating on the Internet a good simulation of the serial code to a number of recommendations for improvement, and describes the test procedures used in practical projects in several areas requiring attention.