是一个超声波测距离的程序，用语单片机 超声波超声波-Is an ultrasonic distance measuring procedures

此程序用于超声波测距，三个数码管显示距离，基于AT89S52单片机-This program is used ultrasonic ranging, three digital display the distance, based on AT89S52 microcontroller

51单片机超声波测距程序资料,包括全部的原理图设计，实物图设计，还有完整的程序(51 singlechip ultrasonic ranging program data, including all the schematic design, physical design, and complete program.)