工具栏的添加，模拟录音机 开始 关闭 不同频率 自己定义新的功能 比较简单 熟悉工具栏的操作-toolbar Additions, closed analog tape recorders different frequencies own definition of new features relatively simple toolbar familiar with the operation

通过编写程序,将操作系统部算法以可视化的方式模拟出来,最终达到对这些算法(Through programming, operating systems division algorithm, in the form of visual simulation, eventually reach for these algorithms)