vf写的一个血液流变学检测分析报告系统，可以单机使用，管理数据信息打印报告等功能。-vf write a hemorheology analysis system that can stand-alone use, management of data information print reporting.

自动通过系统信息检测当前插入的USB设备打印机，并通过USB端口发送数据打印-Detected automatically by the system information inserted USB device printer through the USB port to send data printing

打开一个串口，开启线程轮循，当串口有信息进入时，检测当前系统时间，并以此时间作为文件名，建立TXT存储收到的串口信号-Open a serial port, open the thread rounds, when the serial information to enter, the current system time, and this time as the file name, the establishment of TXT storage received serial sig