Block diagrams are used heavily in design and engineering of diagrams for procedures, hardware, applications and electronics. Most commonly, they represent concepts and systems in a higher degree, less detailed summary. The diagrams are helpful for troubleshooting technical issues.
A block diagram is a visual representation of a system which utilizes simple, labeled cubes that represent single or several items, entities or concepts, connected with lines to show relationships between these. An entity relationship diagram (ERD), 1 example of a block diagram, represents an advice system by demonstrating the relationships between humans, objects, locations, events or theories inside that system. (See a picture on the ERD definition webpage.)
The simplification in block diagrams may also be useful when demonstrating an idea, but concealing the inner workings of possibly confidential intellectual property (IP). Top-down design in electrical technology frequently progresses through increasingly detailed block diagrams. After enough detail is added through iterations, the block structure becomes a schematic. Block diagrams in process control show the functions of surgeries but not the elements that perform them. The functions of block diagrams may then be executed using programmable logic controls (PLC).
Block diagrams are a generalized representation of a concept and are not intended to display comprehensive information in relation to manufacture or design. Contrary to schematics, blueprints and layout diagrams, block diagrams do not portray the necessary detail for physical structure. Block diagrams are made easy in order not to cloud theories.
Block diagrams are also used in a scientific context. In the study of biology, for example, block diagrams have been utilised to exhibit biological functions and interrelations.