Printed wiring board: A board carries many different components which are
connected together in electrical circuits to work their different
tasks. The most common circuit boards
are called PCBs (printed circuit boards) and are most commonly mass produced
ready for a specific job. Some circuit boards are made plain so a person can
build their own for a particular electrical task. Most things that use
electricity have at least one circuit board inside of them that makes them run.
more printed wiring board catalogues.