软件功能：

1.自定义功能：菜单-自定义，增加、保存、撤销，保存后下次启动为本次增加的项；
2.软件启动时检测可用串口，并将串口名加载到打印机菜单中；
3.打印机菜单中分普通打印机和串口打印机，串口打印机以COM打头；
4.不管是哪种打印机被选择后，都会存储为下次启动默认打印机；
5.点打印按钮时，检测当前选择的打印机并打印；
6.快捷键ALT+X清空，ALT+C打印；
7.支持芯烨X80串口打印机。(Software function:

1., custom function: menu customization, adding, saving, revoking, and saving the next startup.
2., when software starts, it detects the available serial port and loads the serial name to the printer menu.
3., the printer menu is divided into ordinary printer and serial port printer, and serial printer is headed by COM.
4., no matter which printer is selected, it will be stored as the next default printer.
When you print the button 5. times, check the currently selected printer and print it.
6. shortcut key ALT+X clear, ALT+C printing;
7. support the yup X80 serial printer.)