FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The operating system (OS) manages all of the software and hardware on the computer. It performs basic tasks such as file, memory and process management, handling input and output, and controlling peripheral devices such as disk drives and printers.

Detailed explanation-2: -Operating System as Resource Manager Operating system allows multiple programs to be in memory and run at the same time. Resource management includes multiplexing or sharing resources in two different ways: in time and in space. In time multiplexed, different programs take a chance of using CPU.

Detailed explanation-3: -Process control block This includes the process state, program counter, CPU scheduling information, memory management information, accounting information, and IO status information. The operating system uses the process control block to keep track of all the processes in the system.

Detailed explanation-4: -Storage Management Another function of the operating system is storage management. This includes managing the files on the hard disk and providing security to prevent unauthorized access to those files. The operating system is also responsible for backing up files in case of data loss.