1-wire单总线原理，包括概述，硬件结构，命令序列，信号方式等几部分。

Although accurate digital thermometers are now available at low cost, it remains exciting and instructive to build one your- self. The present circuit is particularly intended to help the reader in the use of a PIC processor Type PIC16F84 (

求解大地线长度,利用大地测量学书中讲的内容，求解两个测站之间的大地线长度-Solving the earth wire length

代码中的算法能够将切下的图像子块中的表格线框去除,还可以-Code algorithm can cut the image sub-block of the table in wire frame, still can