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Computer-aided manufacture (CAM). When a PCB layout has been designed using CAD, the board can be produced or manufactured using CAM. Two examples of CAM are:- A design machined by a computer numeric control (CNC) miller, which removes all the unwanted copper from the board. A design layout printed on mechanism is simply a device which takes an input motion and force, and outputs a different motion and force. The point of a mechanism is to make the job easier to do. The mechanisms most commonly used in mechanical systems are levers, linkages, cams, gears, and and pulleys. You need to know how to calculate the