What Is an Operating System?
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Operating systems are the programs that run in the background of computers. They manage hardware components such as memory keyboards, file systems, keyboards printers and monitors. It also controls access to the central processing unit, or CPU.
An OS allows multiple programs to be running simultaneously, a process called multitasking. This is possible because the OS allocates system resources like CPU time and memory space, to a program during execution. It monitors the amount of memory and CPU time the program uses, and ensures it does not interfere with other programs that use the same resources.
Operating systems also keep track of the file’s location and status on the hard drives of computers. They create virtual directories and save metadata, like the date of creation or modification. Drivers enable an application to easily access the hardware of the computer. These drivers convert the proprietary language of the hardware into a standard language that an operating system understands.
When an application must save files, it switches to the operating system kernel. This is because the application can’t directly access the drive, which requires a driver in order to communicate with it. The operating system generates a logical request and then translate it. Hardware is used according to the instructions.
