The simplification in block diagrams can also be helpful when demonstrating an idea, but hiding the internal workings of possibly key intellectual property (IP). Top-down design in electrical technology often progresses through progressively detailed block diagrams. Block diagrams in procedure control show the functions of surgeries but not the components that perform them. The purposes of block diagrams can then be implemented with programmable logic controllers (PLC).
Unlike schematics, blueprints and design diagrams, block diagrams do not portray the necessary detail for bodily construction. Block diagrams are made simple in order to not cloud theories.
An entity relationship diagram (ERD), one example of a block diagram, represents an info system by demonstrating the relationships between individuals, objects, places, concepts or events within that system. (See a picture in the ERD definition page.)
Block diagrams are also utilized in a context. In the study of biology, for example, block diagrams are utilized to show biological functions and interrelations.
Block diagrams are used heavily in design and engineering of diagrams such as electronic equipment, hardware, software and processes. Most commonly, they signify theories and systems at a greater degree, less thorough summary. The diagrams are useful for troubleshooting technical problems.