Block diagrams are a generalized representation of a theory and aren't meant to display comprehensive information in regards to manufacture or design. Unlike schematics, blueprints and layout diagrams, block diagrams don't portray the essential detail for physical structure. Block diagrams are created simple so as to not cloud theories.
The simplification in block diagrams can also be useful when demonstrating a notion, but concealing the internal workings of possibly key intellectual property (IP). Top-down layout in electrical engineering frequently progresses through increasingly detailed block diagrams. Block diagrams in process control reveal the functions of operations but not the components that execute them. The functions of block diagrams can then be implemented using programmable logic controllers (PLC).
Block diagrams are utilized in engineering and design of diagrams including hardware, electronics, software and procedures. Most commonly, they signify theories and systems at a greater degree, less detailed overview. The diagrams are useful for troubleshooting technical problems.
Block diagrams are also utilized in a context. In the analysis of biology, by way of instance, block diagrams can be utilized to show biological functions and interrelations.
An entity relationship diagram (ERD), one example of a block structure, represents an advice system by demonstrating the relationships between people, objects, locations, concepts or events within that system. (See a picture on the ERD definition webpage.)