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

单服务台模型，一分析fifo排队规则的分析模型，此代码可以计算出分析数据，而且可以绘出二维分析图-Single-desk model, an analysis of the FIFO queuing discipline analysis model, this code can calculate the analysis of data, and you can draw two-dimensional analysis chart