用串口通信实现的条码扫描程序，设计条形码打印程序-Serial communication with the bar code scanner to achieve the design barcode printing program

基于32单片机的超声波测距模块程序串口打印显示，精度较高-32 microcontroller based ultrasonic ranging module program serial printer display, high precision cruise control, high precision, rapid control, digital display set and measured values