一些小程序，仅供参考，不足之处，请见谅。谢谢你的支持。-Some small programs, reference, deficiencies, please forgive me. Thank you for your support.

模拟操作系统中内存的分配与回收 更加直观的学习操作系统 求送学习操作系统-Simulation operating system memory allocation and recovery more intuitive to learn operating system request send learning operating system

使用时，先加载，在cad命令栏输入sss，就可以计算图中的不同区域的总面积了。-When used, the first load, in the CAD command bar to enter the SSS, you can calculate the total area of the different regions in the map.