mcu-ultrasonic-ranging-program

代码说明：

  使用51单片机实现的超声波测距模块，带有显示，语音报警功能，附有原理图和PCB板(A MCU program using Ultrasonic testing to measure the distant with display and voice alarm function, package with PCB and schematic)

文件列表：

stc89c52rc 超声波测距
.....................\DS1302.c,3614,2014-02-23
.....................\DS1302.h,854,2014-02-23
.....................\DS1302.LST,6581,2014-11-28
.....................\DS1302.OBJ,8202,2014-11-28
.....................\DS18B20.c,6308,2013-12-25
.....................\DS18B20.h,3101,2014-11-28
.....................\DS18B20.LST,11603,2014-11-28
.....................\DS18B20.OBJ,7077,2014-11-28
.....................\keyscan.c,13280,2014-02-23
.....................\keyscan.h,689,2014-02-23
.....................\keyscan.LST,35323,2014-11-28
.....................\keyscan.OBJ,28067,2014-11-28
.....................\LCD1602.c,8589,2013-04-15
.....................\LCD1602.h,3675,2013-04-15
.....................\LCD1602.LST,13802,2014-11-28
.....................\LCD1602.OBJ,8548,2014-11-28
.....................\时钟超声波测距,55020,2015-03-18
.....................\时钟超声波测距.hex,21460,2015-03-18
.....................\时钟超声波测距.lnp,119,2015-03-18
.....................\时钟超声波测距.M51,58720,2015-03-18
.....................\时钟超声波测距.plg,222,2015-04-22
.....................\超声波测距,34612,2013-05-02
.....................\超声波测距.bak,59339,2013-04-15
.....................\超声波测距.c,5214,2015-04-22
.....................\超声波测距.hex,15314,2013-05-02
.....................\超声波测距.lnp,108,2013-05-02
.....................\超声波测距.LST,11200,2015-03-18
.....................\超声波测距.M51,38314,2013-05-02
.....................\超声波测距.OBJ,14575,2015-03-18
.....................\超声波测距.plg,962,2013-05-02
.....................\超声波测距.uvopt,61291,2015-04-22
.....................\超声波测距.uvproj,13946,2014-02-23
.....................\超声波测距.__i,40,2015-03-18
.....................\超声波测距_uvopt.bak,61301,2015-04-22
.....................\超声波测距_uvproj.bak,13780,2013-05-02
原理图和PCB（使用PROTEL软件打开文件里面后缀为SCH和PCB的文件）
.............................................................\带语音播报的超声波测距系统.pcb,116102,2015-04-22
.............................................................\带语音播报的超声波测距系统.pcbPreview,46573,2014-12-04
.............................................................\带语音播报的超声波测距系统.sch,35613,2014-11-28
.............................................................\带语音播报的超声波测距系统.schPreview,64520,2014-12-02