What Did the First Printed Circuit Boards Look Like?
These days, a printed circuit board includes copper sheets laminated onto a non-conductive substrate. They are usually small and crowded with capacitors, resistors, and other active devices. Printed circuit boards didn’t always look this way. In 1943, Dr. Paul Eisler created what is considered the first operating printed wiring board. Over the next decades, printed … Read moreWhat Did the First Printed Circuit Boards Look Like?