In electronic and electrical business, a schematic diagram is often used to refer to the plan of equipment. Schematic diagrams are usually used for the maintenance and repair of electronic and electromechanical systems.  Initial schematics have been done manually, using standardized templates or off-the-shelf glue symbols, however today electronic design automation software (EDA or"electrical CAD") is often utilized.
These tools go beyond simple drawing of devices and connections. Normally they're incorporated into the whole IC design flow and linked to other EDA tools for verification and simulation of this circuit under design.
In electronic design automation, even until the 1980s schematics were practically the sole formal representation for circuits. More recently, with the advancement of computer technologies, other representations were introduced and specialized computer languages have been developed, because with the explosive rise of the complexity of digital circuits, traditional schematics are becoming less practical.
A design, or schematic diagram, is a representation of these elements of a system using abstract, picture symbols as opposed to realistic images. A schematic usually omits all details which aren't related to the information the schematic is intended to communicate, and might add unrealistic elements that aid comprehension. For example, a subway map intended for passengers can represent a subway station using a dot; the dot doesn't resemble the actual station at all but provides the viewer info without unnecessary visual clutter. A schematic diagram of this chemical procedure uses symbols to represent the valves, ducts, valves, pumps, and other elements of the machine, emphasizing their interconnection paths and suppressing physical information. In an electronic circuit structure, the design of these symbols might not resemble the design from the circuit. In the design diagram, the symbolic components are arranged to be more easily interpreted by the viewer.
In electrical power systems design, a design drawing referred to as a one-line diagram is frequently used to represent substations, distribution methods as well as whole electric power grids. These diagrams simplify and compress the details which would be repeated on each individual stage of a three-phase method, revealing only 1 element rather than three. Electrical diagrams for switchgear often have common device functions designate by standard function amounts.
A semi-schematic diagram unites a number of the abstraction of a just schematic diagram with other elements exhibited as realistically as possible, for various reasons.
Schematic diagrams have been used widely in repair guides to help users understand the interconnections of parts, and to give graphical instruction to help out with rebuilding and simplifying mechanical assemblies. Many automotive and motorcycle repair manuals give a significant number of webpages on schematic diagrams.