An entity relationship diagram (ERD), one instance of a block structure, represents an info system by showing the relationships between people, objects, places, events or theories inside this system. (See a picture on the ERD definition webpage.)
Block diagrams are utilized in a scientific context. In the study of biology, by way of instance, block diagrams can be utilised to exhibit biological functions and interrelations.
Block diagrams are used in engineering and design of diagrams including hardware, electronics, applications and processes. Most frequently, they symbolize concepts and systems in a greater level, less comprehensive overview. The diagrams are helpful for troubleshooting technical issues.
The simplification in block diagrams may also be useful when demonstrating a notion, but hiding the inner workings of potentially secret intellectual property (IP). Top-down layout in electrical engineering frequently progresses through progressively detailed block diagrams. Once enough detail is added through iterations, the block diagram becomes a schematic. Block diagrams in process control reveal the functions of operations but not the components that perform them. The purposes of block diagrams can then be executed with programmable logic controllers (PLC).
Contrary to schematics, blueprints and design diagrams, block diagrams don't portray the necessary detail for physical structure. Block diagrams are made simple in order to not cloud concepts.