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　　　　The price of PCB (PRINTED CIRCUIT BOARD) is usually evaluated according to factors such as its size, complexity, PCB mate

　　　　PCB, which is Printed Circuit Board, is an electronic component that prints circuit design patterns on a special circuit

　　　　definition:　　PCB (Process Control Block): The data structure that uses process management and control information in the

　　　　PCB is also called a printed circuit board. Rigorously, printing circuit boards are represented by PCB, rather than using

　　　　Initialize process control blocks. The initialization of PCB includes:　　① Initialize identification information.　　Fill in

　　　　1. The process identifier name　　Each process must have a unique identifier, which can be a string or a number.　　2. Proces