Windows operating system underlying dos instructions

Window operating system in the entire computer is located as follows: Under the Window operating system, we can use Window's instructions to operate some things. We can check all the commands under the Windows operating system as follows: Start-Run (or directly use the window key +R)-cmd-cd c:\\windows\\system32 Enter-help Enter to see all the windows under Some instructions. You can also use help |  More Part of the display. There are a lot of instructions. The doc command below Window is just like the shell terminal under Linux. Below this you can use the instructions to do something. Our users only need to directly manipulate the doc command, or the shell command under linux. The operating system provides a human-machine interface. The operating system provides an input interface. After the user inputs the command, the operating system receives the input string, then parses the string, then finds the corresponding instruction and forwards the request to the instruction. The instruction completes the corresponding operation. End!