define Process control block and mention components of PCB
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a process control block (PCB) is a data structure used by computer operating systems to store all the information about a process. It is also known as a process descriptor. When a process is created (initialized or installed), the operating system creates a corresponding process control block.
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Process State. This specifies the process state i.e. new, ready, running, waiting or terminated.
Process Number. ...
Program Counter. ...
Registers. ...
List of Open Files. ...
CPU Scheduling Information. ...
Memory Management Information. ...
I/O Status Information.
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