In PCB design, in fact, before the official wiring, even after a very long step, the following is the main PCB design process:
System Specifications
First you have to plan out the system specifications of the electronic device. The system includes a function of limiting the cost, size, operation situation and so forth.
System function block diagram
Next, the system must produce a functional block diagram. Relations between the box must also be marked.
The system is divided several PCB to several PCB words segmentation system, then, not only in size can be reduced, but also allows the system has the ability to upgrade and exchange parts. System function block diagram provides a basis for our division. Like a computer can be divided into motherboards, graphics cards, sound cards, floppy drives, and power, and so on.
Decided to use the encapsulation method, and the size of each PCB circuit when the quantity of each PCB technology and have decided to use the good, the next step is to determine the size of the board. If the PCB design is too large, the packaging technology will change, or for re-segmentation operation. When selecting technology, but also the quality and speed of the circuit diagram are considered inside.