I want to know the content about PCB,how to get?
PCB as in printed circuit board? Do you want the pinout diagram, or the full processor data sheet? In either case you'd probably want to go to the manufacturer website.
I have these for several mini chips (PICs and motorolas) but I imagine a comercial CPU would be a bit of a monster if you want the full data sheet.
I said that PCB is Process Control Block,not printed circuit board,
I want to read the information.
I said ...
Not here you didn't. Sorry my mind reading failed. Being clear with questions aids in obtaining useful answers.