Operating System Services Following are the five services provided by operating systems to the convenience of the users. Program Execution The purpose of computer systems is to allow the user to execute programs. So the operating system provides an environment where the user can conveniently run programs. Running a program involves the allocating and deallocating… Continue reading What are the services provided by the Operating-System…?
System Call: System calls provide an interface between the processor and the operating system. System calls allow user-level processes to request some services from the operating system which process itself is not allowed to do. For example, for I/O a process involves a system call telling the operating system to read or write a particular… Continue reading what is System call ?
Evolution of OS: 1.Mainframe Systems Reduce setup time by batching similar jobs Automatic job sequencing – automatically transfers control from one job to another. First rudimentary operating system. Resident monitor initial control in monitor control transfers to the job when the job completes control transfers to monitor Batch Processing Operating System: This type of OS… Continue reading Evaluation Of Operating System
Functions of Operating System: The functions of the operating system are given below:- Process Management A process is a program in execution. A process needs certain resources, including CPU time, memory, files, and I/O devices, to accomplish its task. The operating system is responsible for the following activities in connection with process management. ✦… Continue reading What are the functions of operating system…?
What is an Operating System? An Operating system is a program that acts as an intermediate between a user of a computer and the computer hardware. An Operating System performs all the basic tasks like managing file, process, and memory. Operating System is a collection of system programs that together control the operations of a computer system.… Continue reading What is an Operating System ?