The operating system needs to ensure that each process has enough memory to execute the process, while also ensuring that one process does not use the memory allocated to another process.
This must also be done in the most efficient manner.
The operating system manages the input to and output from the computer.
How hardware devices use the functionality of an operating system?
An operating system has three main functions: (1) manage the computer’s resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.
How does the operating system manage hardware?
The operating system controls every task your computer carries out and manages system resources. At the simplest level, an operating system does two things: It manages the hardware and software resources of the system.
How an operating system interacts with applications and hardware?
The operating system provides an interface between an application program and the computer hardware, so that an application program can interact with the hardware only by obeying rules and procedures programmed into the operating system.
What must the operating system provide to load and execute a program?
Processes. The operating system’s most important job is managing the CPU: If there are multiple programs that must execute, then it is a disaster if one program uses the processor and “loops.” The OS must ensure that all programs have fair use of the processor’s time so that all programs make progress at execution.