This a microcontroller based on the Series 51 Ultrasonic Ranging decompression procedures without a password.

Packet : 972320019.rar filelist
超声波测距离
超声波测距离\www.codek.cn
超声波测距离\www.codek.cn\下载说明.txt
超声波测距离\www.codek.cn\中华源码库下载站.url
超声波测距离\www.codek.cn\系统说明.txt
超声波测距离\www.codek.cn\超声波测距离.c
超声波测距离\下载说明.txt
超声波测距离\中华源码库下载站.url
超声波测距离\系统说明.txt
下载说明.txt
系统说明.txt
中华源码库下载站.url

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Nothing．