Block diagrams are graphical representations of systems that can be used to explain processes in various industries. They are similar to flowcharts but more generalized. Lines can be drawn to represent inputs, outputs, or alternative choices. Block diagrams can be used to illustrate computer programs or map out a process as a top-down diagram.
A block diagram is a graphical method used to explain the concept of a system without needing to understand the individual components within that system. This type of diagram could be used in a variety of industries to illustrate and educate people about how a system works, in part or in its entirety. Block diagrams usually have a logical and methodical flow from start to finish. Software engineers and programmers are examples of individuals who might be familiar with block diagrams.
Block diagrams are essentially synonymous with flowcharts, but a block diagram is generalized in nature. Sometimes block diagrams are used to hide specific information or processes that could prove beneficial or harmful, as the case may be. People who are presented with a block diagram should be able to develop an understanding of what that block represents. To make the block itself easier to understand, lines should be drawn to the block representing various inputs, outputs, or alternative choices.
Depending on the type of process being illustrated, the blocks could serve in any capacity needed to adequately describe the process or parts of the process. For example, a machine tool manufacturing cell might include a drill press, milling machine, and sander. To illustrate a process within that cell, each machine tool could be represented by its own block. When the manufacturing process is illustrated in its entirety, a single block could be used to represent all components within that cell.
A block diagram can also be used to illustrate how a computer program works or how parts of a program work. For example, if you need a program to calculate four different interest rate methods, one block could represent each of these lines of code for one of these methods. That way, a supervisor doesn’t need to understand the code itself, as written, as long as the purpose of that block is effectively communicated.
Some block diagrams can be used as a way to map a process as a top-down diagram. For example, a person who has an inspired project might use a block diagram as a way to convey the idea as a series of individual blocks, each helping to support the main argument. Subsequently, these individual blocks could be analyzed and further developed into additional block diagrams if needed. This method can be repeated until the process is mapped out to the satisfaction of everyone involved in the project. If compiled and fully mapped, the block diagram might look like a pine tree type structure of the entire project, which is typical of a top-down diagram.
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