- Printed Wiring Board.
A Printed Wiring Board is an alternative name for a Printed Circuit Board (PCB). In Japan the term PWB is generally used in order to avoid confusion with "Polychlorinated Biphenyls (PCBs)" which is a poison.
For more information see:
- www.piclist.com/images/www/hobby_elec/e_print.htm - Hobbyist guide to creating printed wiring boards.