Block diagrams are a generalized representation of a theory and are not intended to display full information in regards to manufacture or design. Contrary to schematics, blueprints and design diagrams, block diagrams do not portray the necessary detail for physical structure. Block diagrams are made easy in order not to cloud concepts.
Block diagrams are also utilised in a context. In the analysis of math, for instance, block diagrams are used to show biological functions and interrelations.
The simplification in block diagrams can also be useful when demonstrating a notion, but concealing the inner workings of potentially key intellectual property (IP). Top-down layout in electrical technology frequently progresses through increasingly detailed block diagrams. Block diagrams in process control show the functions of surgeries but not the components that play them. The functions of block diagrams may then be implemented using programmable logic controllers (PLC).
An entity relationship diagram (ERD), one example of a block structure, represents an information system by demonstrating the relationships between humans, objects, places, concepts or events inside that system. (See a picture on the ERD definition webpage.)
Block diagrams are used heavily in engineering and design of diagrams such as applications, hardware, electronic equipment and procedures. Most commonly, they represent theories and systems at a greater level, less thorough overview. The diagrams are useful for troubleshooting technical problems.