In electronic design automation, before the 1980s schematics were virtually the only formal representation for circuits. More recently, with the progress of computer technologies, other representations have been introduced and technical computer languages have been developed, as with the explosive growth of the complexity of electronic circuits, conventional schematics have become less practical.
A semi-schematic diagram unites some of these abstraction of a just schematic diagram along with different elements displayed as realistically as possible, for various reasons. It is a compromise between a purely abstract diagram (e.g. the schematic of the Washington Metro) and a completely realistic representation (e.g. the corresponding aerial view of Washington).
In electric power systems design, a schematic drawing called a one-line diagram is often used to symbolize substations, distribution methods or even entire electric power grids. These diagrams simplify and compress the exact facts that would be repeated on each individual phase of a three-phase method, demonstrating only one component instead of three. Electrical diagrams such as switchgear often have common device functions designate by standard function numbers.
Schematic diagrams are used widely in repair guides to help users understand the interconnections of parts, and to present graphical training to assist in dismantling and rebuilding mechanical assemblies. Lots of automotive and motorcycle repair manuals give a significant number of webpages on schematic diagrams.
Schematics for electronic circuits are prepared by designers using EDA (electronic design automation) tools known as schematic capture applications or schematic entry applications. These programs go beyond easy drawing of connections and devices. Normally they are integrated into the whole IC design flow and linked to additional EDA tools for simulation and verification of this circuit under design.
In electronic and electrical industry, a design diagram is often used to refer to the plan of gear. Schematic diagrams are usually employed for the maintenance and repair of electronic and electromechanical systems.  Original schematics were done by hand, with standardized templates or pre-printed adhesive symbols, however now electronic design automation software (EDA or"electric CAD") can be used.
A schematic, or schematic diagram, would be a representation of these components of a system utilizing abstract, graphic symbols rather than realistic pictures. A schematic usually omits all details which are not relevant to the information that the cheque is intended to communicate, and might add unrealistic elements that aid comprehension. As an instance, a subway map meant for passengers may signify a subway station with a dot; the dot does not resemble the actual station whatsoever but gives the viewer info without unnecessary visual clutter. A schematic diagram of this chemical procedure uses symbols to represent the vessels, piping, valvesand pumps, and other elements of the system, emphasizing their interconnection paths and suppressing physical information. In an electronic circuit structure, the layout of these symbols may not resemble the layout in the circuit. In the schematic diagram, the symbolic elements are organized to be easily interpreted by the viewer.