Main Functions of Computer Operating System is______.
A.
Manage the hardware and software resources of computer system to give full play to the efficiency of computer resources and provide a good operating environment for other software.
B.
Translate the program written in advanced programming language and assembly language into the target program that can be directly executed by computer hardware, and provide a good software development environment for users.
C.
E ffective ly m anage all kinds of computer files and efficient ly process computer hardware
D.
Provide users with convenient operation and use of computers