Printed Circuit Board
The design of a printed circuit board comes after the creation of a schematic and generation of a netlist. The generated netlist is then read into a layout tool and associated with part footprints from a library. Placing and routing can now start.
Placing and routing is generally done in two steps. Placing the components comes first, then routing the connections between the components. The component placement is not absolute during the routing phase, as it may still be changed by moving and rotating, especially with designs using more complex components such as FPGAs or Microprocessors. Their large number of signals, and their signal integrity needs may require optimization of the placement.
The resulting design is then output in RS-274X Gerber format to load in the CAM system of the manufacturer.
Read more about this topic: Place And Route
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