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"A logic gate is an idealized or physical device implementing a Boolean function, that is, it performs a logical operation on one or more logical inputs, and produces a single logical output. Depending on the context, the term may refer to an ideal logic gate, one that has for instance zero rise time and unlimited fan-out, or it may refer to a non-ideal physical device...
Logic gates are primarily implemented using diodes or transistors acting as electronic switches, but can also be constructed using electromagnetic relays (relay logic), fluidic logic, pneumatic logic, optics, molecules, or even mechanical elements. With amplification, logic gates can be cascaded in the same way that Boolean functions can be composed, allowing the construction of a physical model of all of Boolean logic, and therefore, all of the algorithms and mathematics that can be described with Boolean logic.
Logic circuits include such devices as multiplexers, registers, arithmetic logic units (ALUs), and computer memory, all the way up through complete microprocessors, which may contain more than 100 million gates. In practice, the gates are made from field-effect transistors (FETs), particularly MOSFETs (metal–oxide–semiconductor field-effect transistors).
Compound logic gates AND-OR-Invert (AOI) and OR-AND-Invert (OAI) are often employed in circuit design because their construction using MOSFETs is simpler and more efficient than the sum of the individual gates.
In reversible logic, Toffoli gates are used." [Logic gate. Wikipedia]
The logic gate diagram template for the ConceptDraw PRO diagramming and vector drawing software is included in the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Logic gate diagram
Logic gate diagram, OR gate, AND gate,

Circuits and Logic Diagram Software

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Venn Diagram Examples for Problem Solving. Venn Diagram as a Truth Table

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electrical diagram, electrical engineering, electrical schematic, electrical schematic symbols, electrical diagram symbols  Electrical Engineering

electrical diagram, electrical engineering, electrical schematic, electrical schematic symbols, electrical diagram symbols
This solution extends ConceptDraw DIAGRAM.9.5 (or later) with electrical engineering samples, electrical schematic symbols, electrical diagram symbols, templates and libraries of design elements, to help you design electrical schematics, digital and analog

Chemical Engineering

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Example of DFD for Online Store shows the Data Flow Diagram for online store and interactions between the Visitors, Customers and Sellers, as well as Website Information and User databases.
Steps to Creating a Sales Process Flow Chart
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seven management and planning tools Seven Management and Planning Tools

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Seven Management and Planning Tools solution extends ConceptDraw DIAGRAM and ConceptDraw MINDMAP with features, templates, samples and libraries of vector stencils for drawing management mind maps and diagrams.