What is process?What is the difference between process and program?Why do we need process? (28.218.81608.81609.81613.222.81848.81884.81885)
Process is an application that is running in the system. (1) the process is an implementation of the program. (2) the process is a program and its data processor in the sequential execution of what happens when activities. (3) the program process is in the process of operation of a data set, it is an independent unit of resource allocation and scheduling system. [4] can be defined as the process of traditional OS: "the process is the process of running the program, the system is an independent unit of resource allocation and scheduling". At any given time, the machine only performs an operation, and only after the previous operation has finished, the machine can perform the following operation. It has the following special: resource exclusive, closed. That the program at run time exclusive of the whole machine resources. As a result, the state of these resources can only be determined and changed by the program. Due to the closure and reproducibility of the sequential program, it has brought great convenience for the programmer to debug the program. But because of the monopoly of resources, the utilization rate of system resources is very low. Process generation is introduced to describe the concurrent activities in the system. The introduction of the process is to improve the efficiency of the work of CPU
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