Operating system introduced
This scene, when we spent 8888 ocean bought a 16G memory chicken professional computer, open the computer found his computer memory is only less than 15G, then began to eat chicken journey.
But if you have lost your memory care of it, you will find that the cost is not the manufacturers in order to save costs, which have lost memory is something to take up, this kind of thing is the protagonist of our article - Operation system.
What is the operating system
Operating system like a housekeeper, the housekeeper not only to talk to you, but also to exchange and slaves, then you have no commands will be communicated to the housekeeper slaves.
What is the file
Summary: The file is hidden operating system operating hardware complexity boring process, to provide users with a simple excuse for the hard disk
file interpreted as a virtual unit, with this virtual units, we no longer need to consider the operation of the robot arm, you just need to double-click to open a file, data can be written to be stored CTRL + S.
Now let's think about this virtual file units who provide it? Used linux system should know, linux systems do not see any icon of a file, only the code line by line? (Linux but everything is a file)
As long as you want to open a file, in the final analysis you are required to operate the hardware, but the operating system not only provides us with the concept of a file, and the interface to the file open operation of this complex package into a double-click the file to us .