An entity relationship diagram (ERD), 1 instance of a block diagram, represents an advice system by demonstrating the relationships between individuals, objects, places, events or theories inside that system. (See an image on the ERD definition webpage.)
The simplification in block diagrams can also be helpful when demonstrating a notion, but hiding the inner workings of potentially confidential intellectual property (IP). Top-down layout in electrical technology often progresses through increasingly detailed block diagrams. After a detail is inserted through iterations, the block diagram becomes a schematic. Block diagrams in process control reveal the functions of operations but not the elements that perform them. The functions of block diagrams may then be executed with programmable logic controllers (PLC).
Contrary to schematics, blueprints and design diagrams, block diagrams do not portray the essential detail for bodily structure. Block diagrams are created easy so as to not cloud theories.
Block diagrams are also utilized in a context. In the analysis of biology, by way of instance, block diagrams are used to display biological functions and interrelations.
Block diagrams are utilized heavily in design and engineering of diagrams for processes, hardware, software and electronics. Most frequently, they signify theories and systems in a higher level, less detailed summary. The diagrams are helpful for troubleshooting technical difficulties.