Process control block - Wikipedia OverviewRoleStructureLocationProcess Control Block is a data structure in the operating system kernel containing the information needed to manage the scheduling of a particular process. The PCB is "the manifestation of a process in an operating system."See more on enpedia · Text under CC-BY-SA license Block Diagram - Learn about Block Diagrams, See Examples Whatever any specific block represents should be written on the inside of that block. A block diagram can also be drawn in increasing detail if analysis requires it. Feel free to add as little or as much detail as you want using more specific electrical schematic symbols. What is Process Control Block (PCB)? - tutorialspoint Process Control Block is a data structure that contains information of the process related to it. The process control block is also known as a task control block, entry of the process table, etc. It is very important for process management as the data structuring for processes is done in terms of the PCB.