Printed circuit board, double-sided printing or single-sided printing? What is the difference?
Double good,it is necessary to use a double-sided board. Both sides of the copper covered with a line, and through the hole to pass through the two layers of the line, so that the formation of the required network connection.
Because the wire is only one side of it, we call this PCB a single circuit board. Because there are a lot of strict restrictions on the design of the circuit board (because there is only one side, the wiring can not be * * * * * * and must be around the path alone.
On the most basic PCB, the parts are concentrated on one side and the other on the other side.
