Both operating systems provide complete isolation between simultaneous users. According to Wikipedia (2013) UNIX is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs. It is now a preemptive multitasking operating system. Windows 7 has evolved greatly from its predecessors, such as Windows XP.

In addition, the process manager implements part of the operating system's protection and security. As a consequence of this goal, the process manager implements CPU sharing (called scheduling), process synchronization mechanisms, and a deadlock strategy. Much of the complexity of the operating system stems from the need for multiple processes to share the hardware at the same time.

It does this by creating a model for the way the process uses CPU and any system resources. The process manager is of the four major parts of the operating system. Multiprogramming systems explicitly allow multiple processes to exist at any given time, where only one is using the CPU at any given moment, while the remaining processes are performing I/O or are waiting. To meet these requirements, the OS must maintain a data structure for each process, which describes the state and resource ownership of that process, and which enables the OS to exert control over each process. The OS must allocate resources to processes, enable processes to share and exchange information, protect the resources of each process from other processes and enable synchronization among processes. Process management describes how the operating systems manage the multiple processes running at a particular instance of time. Process management is an integral part of any modern day operating system (OS). The Process Management In Unix Information Technology EssayĪ process is usually defined as the instance of the running program.

Processor management system