In electric power systems layout, a schematic drawing referred to as a one-line diagram is often utilised to symbolize substations, distribution methods or even whole electric power grids. These diagrams compress and simplify the exact facts which would be repeated on each phase of a three-phase method, revealing just one element instead of three. Electrical diagrams such as switchgear often have common device functions designate by regular function amounts.
A schematic, or schematic diagram, would be a representation of those components of a system utilizing abstract, graphic symbols as opposed to realistic pictures. A schematic generally communicates all details that are not pertinent to the info that the cheque is intended to communicate, and might add unrealistic components that assist understanding. As an example, a subway map meant for passengers can signify a subway station using a dot; the dot does not resemble the true station at all but gives the viewer information without any unnecessary visual clutter. A schematic diagram of this chemical procedure uses symbols to represent the valves, ducts, valvesand pumps, and other equipment of the machine, emphasizing their interconnection paths and suppressing physical particulars. In an electronic circuit diagram, the design of these symbols may not resemble the layout from the circuit. From the design diagram, the symbolic elements are organized to be easily interpreted by the viewer.
These instruments go beyond straightforward drawing of devices and connections. Usually they are integrated into the entire IC design flow and also linked to additional EDA tools for verification and simulation of the circuit under design.
A semi-schematic diagram unites a number of the abstraction of a purely schematic diagram along with different elements displayed as realistically as possible, for various reasons.
Schematic diagrams have been used widely in repair manuals to help users understand the interconnections of components, and to provide graphical instruction to help out with rebuilding and simplifying mechanical assemblies. Many motorcycle and automotive repair manuals give a substantial number of pages on schematic diagrams.
In electronic design automation, before the 1980s schematics were the only formal representation for circuits. More recently, together with the progress of computer technology, other specimens were introduced and specialized computer languages were developed, since with the explosive development of the complexity of electronic circuits, conventional schematics are becoming less functional. By way of example, hardware description languages are crucial for modern digital circuit design.
In electrical and electronic sector, a schematic diagram is often utilised to refer to the plan of equipment.  Original schematics were done by hand, using standardized templates or pre-printed glue symbols, however today electronic design automation software (EDA or"electric CAD") is often used.