AskDefine | Define schematic

Dictionary Definition

schematic adj : represented in simplified or symbolic form [syn: conventional, formal] n : diagram of an electrical or mechanical system [syn: schematic drawing]

User Contributed Dictionary



From scheme.



  1. represented simply
  2. sketchy, incomplete
    • 1902, William James, Varieties of Religious Experience,
      Dr. Starbuck gives an interesting, and it seems to me a true, account -- so far as conceptions so schematic can claim truth at all...
  3. relating to a schema


represented simply
sketchy, incomplete
  • Hungarian: vázlatos, sematikus
relating to a schema


  1. a drawing or sketch showing how a system works. [see "diagram"]
    I'll have to study the schematics for the new circuit board.

Extensive Definition

A schematic is a diagram that represents the elements of a system using abstract, graphic symbols rather than realistic pictures. A schematic usually omits all details that are not relevant to the information the schematic is intended to convey, and may add unrealistic elements that aid comprehension. For example, a subway map intended for riders may represent a subway station with a dot; the dot doesn't resemble the actual station at all but gives the viewer the information he needs without unnecessary visual clutter. A schematic diagram of a chemical process uses symbols to represent the vessels, piping, valves, pumps, and other equipment of the system, emphasizing their interconnection paths and suppressing physical details. In an electronic circuit diagram, the layout of the symbols may not resemble the layout in the physical circuit. In the schematic diagram, the symbolic elements are arranged to be more easily interpreted by the viewer.

Electronic industry

In electronic design automation, until the 1980s schematics were virtually the only formal representation for circuits. More recently, with the progress of computer technology, other representations were introduced and specialized computer languages were developed, since with the explosive growth of the complexity of electronic circuits, traditional schematics are becoming less practical. For example, hardware description languages are indispensable for modern digital circuit design.
Schematics for electronic circuits are prepared by designers using EDA (Electronic Design Automation) tools called schematic capture tools or schematic entry tools. These tools go beyond simple drawing of devices and connections. Usually they are integrated into the whole IC design flow and linked to other EDA tools for verification and simulation of the circuit under design.

Schematics in repair manuals

Schematic diagrams are used extensively in repair manuals to help users understand the relative position of parts and to provide graphical instruction to assist in taking apart and rebuilding mechanical assemblies. Many automotive and motorcycle repair manuals devote a significant number of pages to schematic diagrams.

See also

External links

schematic in Spanish: Esquematismo
schematic in Lithuanian: Schema
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