A block diagram is a visual representation of a system which uses 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), 1 instance of a block diagram, represents an advice system by showing the relationships between people, objects, places, concepts or events inside that system. (See a picture over the ERD definition site.)
Block diagrams are utilized in design and engineering of diagrams including applications, hardware, electronic equipment and procedures. Most commonly, they symbolize concepts and systems at a greater level, less detailed summary. The diagrams are helpful for troubleshooting technical problems.
Block diagrams are utilised in a scientific context. In the analysis of Science, for example, block diagrams are used to show biological functions and interrelations.
Block diagrams are a generalized representation of a theory and are not intended to display full information in relation to manufacture or design. Contrary to schematics, blueprints and design diagrams, block diagrams do not portray the necessary detail for bodily construction. Block diagrams are created simple so as not to cloud concepts.
The simplification in block diagrams can also be helpful when demonstrating a notion, but concealing the inner workings of potentially confidential intellectual property (IP). Top-down layout in electrical technology often progresses through increasingly detailed block diagrams. Once a detail is added through iterations, the block diagram becomes a schematic. Block diagrams in procedure control reveal the functions of surgeries but not the components that perform them. The purposes of block diagrams can then be executed using programmable logic controls (PLC).