Printed circuit boards usually include the following features

- Aug 30, 2018-

1. Program ID (PID, process handle) : it is unique, and a process must correspond to a PID.PID is an integer number

2. Feature information: general subsystem process, user process, or kernel process, etc

3. Process status: run, ready, block, indicating the current running status of the process

4. Priority: represents the priority size to gain CPU control

5.Communication information: a reflection of the communication relationship between processes, as the operating system provides communication channels

6. Site protection: protection of blocked processes

7. Resource demand and allocation control information

8. Process entity information, indicating program path and name, process data in physical memory or in swap partition (paging)

9. Other information: working unit, working area, file information, etc


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