In electronic and electrical sector, a design diagram is often used to describe the design of equipment.  Original schematics have been done by hand, with standardized templates or pre-printed adhesive symbols, however now electronic design automation software (EDA or"electrical CAD") is often used.
In electrical power systems layout, a design drawing referred to as a one-line diagram is often utilised to represent substations, distribution systems or even whole electrical power grids. These diagrams compress and simplify the exact details that would be replicated on each phase of a three-phase system, revealing just 1 component rather than three. Electrical diagrams such as switchgear frequently have common device functions designate by standard function numbers.
Schematic diagrams have been used widely in repair guides to help users understand the interconnections of components, and also to provide graphical instruction to assist in dismantling and rebuilding mechanical assemblies. Many automotive and motorcycle repair manuals give a substantial number of pages to schematic diagrams.
In electronic design automation, even until the 1980s schematics were practically the only proper representation for circuits. More recently, with the progress of computer engineering, other specimens were introduced and specialized computer languages have been developed, because using all the explosive increase of the complexity of electronic circuits, conventional schematics are becoming less functional. By way of instance, hardware description languages are crucial for modern electronic circuit design.
A schematic, or schematic diagram, would be a representation of the components of a system using abstract, picture symbols rather than realistic images. A schematic generally communicates all details which are not related to the info that the cheque is meant to convey, and might add unrealistic elements that aid comprehension. As an instance, a subway map intended for passengers might signify a subway station with a scatter; the scatter doesn't resemble the actual station whatsoever but provides the viewer information 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 specifics. In a digital circuit design, the design of these symbols may not resemble the design in the circuit. From the schematic diagram, the emblematic elements are arranged to be easily interpreted by the viewer.
Schematics for electronic circuits are prepared by designers using EDA (electronic design automation) tools known as schematic capture tools or schematic entry tools. These tools go beyond straightforward drawing of devices and connections. 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.
A semi-schematic diagram combines a number of the abstraction of a purely schematic diagram along with different elements displayed as realistically as you can, for a variety of factors.