A schematic of the Washington Metro. The schematic is not drawn to scale; distances between stations are normalized and lines are drawn at 45 and 90-degree angles.

A schematic is a diagram, drawing, or sketch that details the elements of a system, such as the elements of an electrical or electronic circuit or the elements of a logic diagram for a computer or communications system. Download high resolution version (1085x1240, 225 KB)Map of the Washington DC Metrorail system. ... Download high resolution version (1085x1240, 225 KB)Map of the Washington DC Metrorail system. ... Red Line train at Metro Center, hub of the system The Washington Metro is the public transportation system of Washington, D.C., and neighboring suburban communities in Maryland and Virginia, both inside and outside the Capital Beltway. ... A system is an assemblage of inter-related elements comprising a unified whole. ... There are many kinds of circuit An electric circuit interconnects electrical elements. ... A computer is a device or machine for making calculations or controlling operations that are expressible in numerical or logical terms. ... In telecommunication, a communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of interconnection and interoperation to form an integrated whole. ...

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. Electronic design automation (EDA) is the category of tools for designing and producing electronic systems ranging from printed circuit boards (PCBs) to integrated circuits. ... 1980 is a leap year starting on Tuesday. ... A computer language is a language used by, or in association with, computers. ... In electronics, a hardware description language or HDL is any language from a class of computer languages for formal description of electronic circuits. ... Digital circuits are electric circuits based on a number of discrete voltage levels. ...

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. Electronic design automation (EDA) is the category of tools for designing and producing electronic systems ranging from printed circuit boards (PCBs) to integrated circuits. ... Schematic capture or schematic entry is a step in the design cycle of electronic design automation at which the electronic diagram, or schematic of the designed electronic circuit is created by a designer. ... Schematic capture or schematic entry is a step in the design cycle of electronic design automation at which the electronic diagram, or schematic of the designed electronic circuit is created by a designer. ...

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