PCB board generally includes program ID(PID, process handle), and PID is generally an integer; Feature information is generally divided into system process, user process or kernel process; Process status, i.e. running, ready and blocked, indicates the current running status of the process; Priority, indicating the priority of obtaining CPU control; Communication information, the reflection of communication relationship between processes; On-site protected areas, etc.

The insulating part of PCBA board is composed of glass fiber, non-woven fabric and resin, and then pressed into adhesive sheet with epoxy resin and copper foil for use.

2. Different functions

The function of PCB is to make a program (including data) that cannot run independently in a multi-program environment become a basic unit that can run independently and a process that can be executed concurrently with other processes; It is a program code segment that can be executed by the process scheduler on the CPU.

Excellent circuit design in PCBA board can save production cost and achieve good circuit performance and heat dissipation performance.

3. Essential differences

PCB is the only symbol of the existence of a process, and the PCB process control block is the static description of the process. PCB is the support of electronic components and the provider of circuit connection of electronic components.

The essence of PCBA board belongs to the production process. PCB blank goes through the whole process of SMT loading or DIP plug-in.

Baidu encyclopedia -PCB

Baidu encyclopedia -PCBA