用AT89C2051、DS18B20制作的最小系统仿真程序，显示的数据能精确到0.1还能显示负的数值。-With AT89C2051, DS18B20 making the minimum system simulation program, data can be displayed accurately to 0.1 also shows a negative value.

用matlab画矩形排样图。【WL数组中第一列至第四列分别为：矩形长、矩形宽、矩形左下角横坐标、矩形左下角纵坐标】-Matlab to draw rectangles layout diagram. 【 probably in the first column to the fourth column in the array are: rectangular rectangular long, wide, abscissa rectangular corner, rectangular cor