Block diagrams are a generalized representation of a theory and are not meant to display comprehensive information in regards to design or manufacture. Unlike schematics, blueprints and design diagrams, block diagrams do not portray the necessary detail for bodily structure. Block diagrams are created simple in order not to cloud theories.
Block diagrams are utilized in engineering and design of diagrams for hardware, electronic equipment, applications and processes. Most commonly, they signify theories and systems in a greater degree, less comprehensive overview. The diagrams are helpful for troubleshooting technical difficulties.
The simplification in block diagrams may also be useful when demonstrating an idea, but concealing the internal workings of potentially secret intellectual property (IP). Top-down layout in electrical engineering often progresses through progressively detailed block diagrams. After a detail is inserted through iterations, the block structure becomes a schematic. Block diagrams in procedure control show the purposes of surgeries but not the elements that play them. The purposes of block diagrams may then be implemented using programmable logic controllers (PLC).
Block diagrams can also be used in a context. In the analysis of math, for example, block diagrams can be utilized to exhibit biological functions and interrelations.
A block diagram is a visual representation of a system which utilizes simple, labeled blocks which represent single or several items, concepts or entities, connected by lines to show relationships between these. An entity relationship diagram (ERD), one example of a block diagram, represents an information system by showing the relationships between individuals, objects, locations, concepts or events within that system. (See a picture over the ERD definition page.)