通用异步接收器/发送器(UART)是能够编程以控制计算机到附加串行设备的接口的微芯片。详细来说,它提供给计算机RS-...还有高级的UART提供了一定数量的数据缓冲,这样计算机和串行设备数据流就可以保持同样的速度。-universal asynchronous receiver / transmitter (UART) can be programmed to control computer attached to the serial device interface microchips.

Unfortunately Microsoft has never paid much attention to the serial port. In the Windows API it is just regarded as a file, and in the first version (1.1) of the .NET framework (managed code) there was no support for serial communication. Fortunately