Operating systems are the software that runs in the background of a computer. They manage hardware components such as memory, file-systems, keyboards, printers and monitors. It also controls access to the central processing unit or CPU.
Multitasking is a concept that allows multiple programs to run simultaneously on an OS. This is because the OS allocates resources from the system to the program, for instance memory space and CPU, during execution. It monitors the amount of memory and CPU time a program consumes and ensures that it does not interfere with other applications that are using the same resources.
Operating systems also keep track of the location and status of files on the hard drives of the computer. They create a virtual directories and store metadata, such as the date of creation or modification. An OS also makes it possible for an application to connect with the hardware of a computer via drivers. These drivers translate the hardware’s proprietary language into a standard the operating system can understand.
If an application is trying to save a document, it connects to the kernel of the operating system. This is due to the fact that the application cannot directly access the disk drive and needs an interface driver to communicate with it. The operating system creates a logical request and then translates it. Hardware is used in accordance with the instructions.
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