9.6 In an essay, compare and contrast the three types of functional diagrams: functional block diagram, functional flow diagram, and IDEF0. A table that lists the characteristics of each of the three would be a good start to this problem.
Three types of functional diagrams
Characteristics |
Block Diagrams |
Flow Diagrams |
IDEFO |
What is? |
A block diagram is a diagram of a system in which the principal parts or functions are characterized by blocks connected by lines that show the connections of the blocks. |
A data-flow diagram is a technique of representing a flow of data of a process or a system. |
IDEF0 is a model that contains a hierarchical series of diagrams, text, and glossary cross-referenced to each other. |
Used for? |
Block diagrams are typically used for a higher level. |
DFDs were usually used to show data flow in a computer system. |
It is used initially to define the necessities and specify the functions, and then to design an implementation that encounters the requirements and executes the functions. |
Developed |
block diagrams have been used from systems engineering to software engineering, since the late 1950s. |
DFD originated from the Diagram used in the SADT methodology at the end of the 1970s. |
It was derived from the SADT developed by Douglas T. Ross and SofTech, Inc. |
The interactivity |
This work proposes the design of block diagram style interactive simulation for digital signal processing |
-- |
Unlike the flow graph, the interactivity relationship can embrace data flow, raw material flow, management and other forms of control, resources. |
focused/used for? |
A block diagram is especially focused on the input and output of a system. It cares less about what happens to get from input to output. |
The DFD provides information about the outputs and inputs of each entity and the process itself. |
It is a graphical Process Modelling Methodology used to implement systems and engineer software. |
Represents by |
Block-diagrams use different boxes to represent classes and functions. |
DFD uses several notations for displaying diagrams |
For the diagram, it uses an activity boxes and arrows for giving directions to input and output. |
9.6 In an essay, compare and contrast the three types of functional diagrams: functional block diagram,...
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