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A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. The PFD displays the relationship between major equipment of a plant facility and does not show minor details such as piping details and designations.
A flowchart is a type of diagram that represents a workflow or process. A flowchart can also be defined as a diagrammatic representation of an algorithm, a step-by-step approach to solving a task. The flowchart shows the steps as boxes of various kinds, and their order by connecting the boxes with arrows.
ABC FlowCharter is a flowchart program originally from Texas-based Micrografx, Inc. [1] The trademark for this software was filed on August 25, 1989, and registered in January 1991. [2] It is also known as Micrografx FlowCharter and iGrafx FlowCharter. [3] Version 4.0 of ABC FlowCharter was released in 1995.
Dia has a modular design with several shape packages available for different needs: flowchart, network diagrams, circuit diagrams, and more.It does not restrict symbols and connectors from various categories from being placed together.
The first structured method for documenting process flow, e.g., in flow shop scheduling, the flow process chart, was introduced by Frank and Lillian Gilbreth to members of ASME in 1921 as the presentation "Process Charts, First Steps in Finding the One Best Way to Do Work". [2]
A control-flow diagram can consist of a subdivision to show sequential steps, with if-then-else conditions, repetition, and/or case conditions. Suitably annotated geometrical figures are used to represent operations, data, or equipment, and arrows are used to indicate the sequential flow from one to another.
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