A circuit diagram is a graphical depiction of an electrical circuit that has been simplified. A pictorial circuit diagram employs simple pictures of components, whereas a schematic diagram uses simplified standard symbols to represent the circuit's components; both styles illustrate the connections between the devices, including power and signal connections. The diagram's arrangement of component interconnections does not correlate to their actual placements in the final device. A circuit diagram, as opposed to a block diagram or a layout diagram, depicts the actual wire connections that are being utilized. The physical arrangement of components is not depicted in the diagram. A depiction that depicts the actual arrangement of the wires and the components they link is referred to as "artwork," "layout," or "physical design."