A schematic, or schematic diagram, would be a representation of those components of a system using abstract, graphic symbols as opposed to realistic pictures. A schematic usually omits all details which aren't pertinent to the advice that the cheque is meant to communicate, and may add unrealistic elements that assist understanding. By way of example, a subway map meant for passengers may signify a subway station with a dot; the dot does not resemble the true station at all but gives the viewer information without unnecessary visual clutter. A schematic diagram of the compound procedure utilizes symbols to represent the valves, ducts, valves, pumps, and other elements of the system, emphasizing their interconnection paths and suppressing physiological information. In a digital circuit design, the layout of the symbols might not resemble the layout from the circuit. In the schematic diagram, the emblematic elements are arranged to be easily interpreted by the viewer.
In electronic design automation, even until the 1980s schematics were practically the sole formal representation for circuits. More recently, with the advancement of computer engineering, other specimens were introduced and specialized computer languages were developed, since using the explosive rise of the complexity of digital circuits, conventional schematics are becoming less practical.
In electrical power systems layout, a design drawing referred to as a one-line diagram is frequently used to represent substations, distribution methods or even entire electrical power grids. All these diagrams compress and simplify the facts which would be repeated on each phase of a three-phase system, revealing just one component rather than three. Electrical diagrams such as switchgear frequently have common apparatus functions designate by standard function amounts.
In electrical and electronic sector, a schematic diagram is frequently utilised to describe the design of gear.  Initial schematics have been done manually, with standardized templates or off-the-shelf adhesive symbols, however today electronic design automation applications (EDA or"electric CAD") can be employed.
Schematic diagrams are used extensively in repair guides to help users understand the interconnections of components, and also to give graphical instruction to assist in dismantling and rebuilding mechanical assemblies. Lots of automotive and motorcycle repair manuals devote a significant number of webpages on schematic diagrams.
A semi-schematic diagram combines a number of these abstraction of a purely schematic diagram along with different components displayed as realistically as you can, for various factors. It's a compromise between a purely abstract diagram (e.g. the schematic of the Washington Metro) along with an exclusively realistic representation (e.g. the corresponding aerial perspective of Washington).
These instruments go beyond straightforward drawing of devices and connections. Usually they are integrated into the entire IC design flow and linked to other EDA tools for simulation and verification of this circuit under design.