These programs go beyond straightforward drawing of devices and connections. Normally they're incorporated into the entire IC design flow and also connected to other EDA tools for simulation and verification of the circuit under design.
A semi-schematic diagram unites some of the abstraction of a purely schematic diagram with other components displayed as realistically as possible, for a variety of factors. It is a compromise involving a purely subjective diagram (e.g. the schematic of the Washington Metro) along with a completely realistic representation (e.g. the corresponding aerial view of Washington).
Schematic diagrams have been used widely in repair guides to help users understand the interconnections of components, and also to offer graphical training to assist in rebuilding and simplifying mechanical assemblies. Many automotive and motorcycle repair manuals give a significant number of pages to schematic diagrams.
A schematic, or schematic diagram, would be a representation of those components of a system using abstract, picture symbols as opposed to realistic pictures. A schematic usually omits all details which aren't pertinent to the data that the cheque is meant to communicate, and might add unrealistic elements that assist understanding. By way of example, a subway map meant for passengers may signify a subway station using a scatter; the dot doesn't resemble the actual station at all but provides the viewer info without any unnecessary visual clutter. A schematic diagram of a compound process uses symbols to represent the vessels, piping, valves, pumps, and other equipment of the machine, highlighting their interconnection paths and suppressing physical details. In a digital circuit diagram, the design of these symbols may not resemble the layout from the circuit. In the schematic diagram, the emblematic components are arranged to be easily interpreted by the viewer.
In electronic and electrical sector, a design diagram is often utilised to describe the design of equipment. Schematic diagrams are often used for the maintenance and repair of electronic and electromechanical systems.  Original schematics have been done manually, using standardized templates or off-the-shelf adhesive symbols, but now electronic design automation software (EDA or"electrical CAD") can be utilized.
In electronic design automation, even until the 1980s schematics were virtually the only formal representation for circuits. More recently, together with the advancement of computer engineering, other representations were introduced and specialized computer languages were developed, as using all the explosive development of the complexity of electronic circuits, traditional schematics are becoming less functional. For example, hardware description languages are crucial for modern electronic circuit design.
In electrical power systems design, a schematic drawing called a one-line diagram is often used to represent substations, distribution methods as well as entire electric power grids. All these diagrams simplify and compress the exact facts which would be repeated on each stage of a three-phase method, demonstrating only one component instead of three. Electrical diagrams for switchgear often have common apparatus functions designate by standard function amounts.