A schematic, or schematic diagram, would be a representation of these elements of a system using abstract, graphic symbols instead of realistic images. A schematic usually omits all details which aren't related to the advice the schematic is meant to convey, and may add unrealistic elements that aid comprehension. By way of example, a subway map intended for passengers could signify a subway station with a dot; the dot doesn't resemble the true station at all but gives the viewer info without any unnecessary visual clutter. A schematic diagram of the chemical procedure utilizes symbols to represent the valves, ducts, valves, pumps, and other equipment of the machine, highlighting their interconnection controlling and paths physical information. In a digital circuit design, the design of these symbols might not resemble the layout in the circuit. In the design diagram, the emblematic components are arranged to be easily interpreted by the viewer.
In electrical and electronic business, a schematic diagram is frequently used to refer to the design of gear. Schematic diagrams are often used for the upkeep and repair of electronic and electromechanical systems.  Initial schematics have been done manually, using standardized templates or pre-printed adhesive symbols, however today electronic design automation applications (EDA or"electrical CAD") is often used.
In electrical power systems design, a design drawing called a one-line diagram is frequently used to represent substations, distribution methods or even entire electric power grids. These diagrams simplify and compress the details that would be replicated on each stage of a three-phase method, showing just 1 element instead of three. Electrical diagrams such as switchgear frequently have common device functions designate by regular function amounts.
Schematic diagrams have been used widely in repair manuals to help users understand the interconnections of components, and to give graphical training to help out with dismantling and rebuilding mechanical assemblies. Many automotive and motorcycle repair manuals devote a significant number of pages into schematic diagrams.
In electronic design automation, even until the 1980s schematics were practically 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, because using the explosive growth of the complexity of digital circuits, conventional schematics are becoming less practical. By way of instance, hardware description languages are crucial for modern digital circuit design.
A semi-schematic diagram unites a number of these abstraction of a purely schematic diagram along with different components displayed as realistically as possible, for a variety of factors.
Schematics for digital circuits are prepared by designers using EDA (electronic design automation) tools known as schematic capture applications or schematic entry tools. These instruments go beyond simple drawing of connections and devices. Normally they are incorporated into the entire IC design flow and connected to additional EDA tools for simulation and verification of the circuit under design.