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A blockdiagram, as the name implies, contains blocks.

Before drawing a blockdiagram, one needs an overview of the required functionality in the collection of blocks that would be the system-to-be.

The principal parts or functions, in the system-to-be, are represented by blocks connected by lines, that show the relationships of the blocks.

Block diagrams can represent both Hardware, Software or Mechanical engineering.

In order to draw a block diagram, follow these simple rules :

  • Name blocks meaningful
  • Inputs are on the left, outputs are on the right
  • Higher abstraction are on top, lower in the bottom, if this is possible to distinguish
    • For example physical hardware blocks will be drawn in the bottom, and the user application will drawn on the top

A few examples:

Bd1.png Bd2.png Bd3.png