A perfboard can be used as a PCB
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Perfboard is a material for prototyping electronic circuits. It is a thin, rigid sheet with holes pre-drilled at standard intervals across a grid, usually a square grid of 2.54mm (0.1") spacing. These holes are ringed by round or square copper pads. Inexpensive perfboard may have pads on only one side of the board, while better quality perfboard can have pads on both sides (plate-though holes). Since each pad is electrically isolated, the builder makes all connections with either wire wrap or miniature point to point wiring techniques. Discrete components are soldered to the prototype board such as resistors, capacitors, and integrated circuits. The substrate is typically made of paper laminated with phenolic resin (such as FR-2) or a fiberglass-reinforced epoxy laminate (FR-4).
Before building a circuit on perfboard, the locations of the components and connections are typically planned in detail on paper or with software tools. Software for PCB layout can often be used to generate perfboard layouts as well. In this case, the designer positions the components so all leads fall on intersections of a 0.1" grid. When routing the connections more than 2 copper layers can be used, as multiple overlaps are not a problem for insulated wires.
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thumb|300px|right|Circuit Skills: Perfboard Prototyping