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Data flowcharts, showing controls over a data-flow in a system; System flowcharts, showing controls at a physical or resource level; Program flowchart, showing the controls in a program within a system; Notice that every type of flowchart focuses on some kind of control, rather than on the particular flow itself. [10]
The term flow diagram is used in theory and practice in different meanings. Most commonly the flow chart and flow diagram are used in an interchangeable way in the meaning of a representation of a process. For example the Information Graphics: A Comprehensive Illustrated Reference by Harris (1999) gives two separate definitions:
[1] A control-flow diagram (CFD) is a diagram to describe the control flow of a business process, process or review. Control-flow diagrams were developed in the 1950s, and are widely used in multiple engineering disciplines.
Swimlane diagrams first appeared in the 1940s as a variation of the flow process chart called multi-column charts. [1] They were called Swim Lane diagrams by Geary Rummler and Alan Brache in their book Improving Performance (1990). They were first introduced to computer-based diagramming by iGrafx. Swimlanes are also known as "Rummler-Brache ...
Money flows in the opposite direction from goods and services. [1] Basic diagram of the circular flow of income. The functioning of the free-market economic system is represented with firms and households and interaction back and forth.
A flow graph is a form of digraph associated with a set of linear algebraic or differential equations: [1] [2] "A signal flow graph is a network of nodes (or points) interconnected by directed branches, representing a set of linear algebraic equations.
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]
It is very common in many fields, including engineering, physics and the study of differential equations, to use a notation that makes the flow implicit.Thus, x(t) is written for (), and one might say that the variable x depends on the time t and the initial condition x = x 0.