free code camp and purpose of usage

computer operating system
This is the main software on a computer. Operating system, the device that controls the contents all of your computer

windows,linux and mac
software that perfoms to operation all computer activities such as supporting
the operation and operating system of all computer devices in order to run in harmony with its

for exc.
Implement user programs and make it easy to solve the problem.
user interface, its Command (command-base user interface) in text form, smoothly use programs in computer connected.
to control menu driven in computer. Receive and perform tasks and for graphical user inter face.
perform section information for hardware,
control of resources in the process :
-multitasking
-multiprocessing
-times sharing
-multithreading
-scalability and network
for managet of applications and data in computer

computer operation system that must using in process to mange computer