To identify the processes in the operating system each process is assigned a process identification number(PID). As Operating System supports multiprogramming, it needs to keep track of all processes. Process Control Block is used to track the process execution status.
Operating System Variations
The operating system(OS) is the collection of software that directs a computer’s operations, controlling and scheduling the execution of other programs, and managing storage, input/output,and communication resources.Basically, the operating system is an interface between the user and machine. It helps user to communicate with machines. Below are the list of widely used variations of the operating system…