Electronic components were mounted on an insulating board and interconnected by wire, with wire wrapping several times around leads or socket pins.Įnter the PCB, which did away with almost all of the wiring used in point-to-point construction and wire wrapping and in doing so, facilitated mass production. It was also difficult to use in mass production since each wire and part had to be looped and soldered to the correct part on the terminal strip.Īnother method of circuit board manufacturing popular in the 1960s was wire wrap. As you might imagine, this system involved a confusing tangle of wires. In a point-to-point operated device, small electronic components and their wires were directly soldered to the terminals, as were the wires from the larger devices, such as transformers. Point-to-point construction used wires soldered to terminal strips, boards stamped with metal loops. Printed circuit boards replaced point-to-point construction in most electronics during the 1950s. A starting point is to understand how printed circuit boards evolved. Understanding circuit boards requires learning about what they are, the different types of circuit boards that exist, the components used on these circuit boards, and the PCB Manufacturing methods or processes. They are thin, flat, and often green rectangular substrates that are covered with a maze of fine copper lines and silver pads and are the heart and soul of most electronic equipment. Anyone who has ever opened up a piece of electronic equipment has seen a printed circuit board, also known as a PCB.
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