C语言编写的EAN13、CODE39、CODE128编码程序，没有使用任何库函数，可向单片机移植，所有均为原创，程序输入字符，界面显示条码，可用手机扫描-C language EAN13, CODE39, CODE128 encoding program does not use any library functions that you can transplant to the microcontroller, all are original, character input progr