The reasons for automation are wide and varied. Write an explanation for each reason listed. Block diagrams are used to represent the control system graphically. They are similar to a flowchart in that they represent the flow in an algorithm. Each block in the diagram represents a logical function in the system, including the controller, processes, actuators and sensors.
All components are necessary, and a controller is essential in all block diagrams.
Block diagrams should not look like a drawing of a series of toy cars on a road going in one way in linear fashion. It is a good idea to plan the drawing of a block diagram by first listing the components you have identified as necessary for the system you are describing. When you joint the diagram with arrows in the direction of the flow of data, you will be checking that you have included all necessary components. Subsystems Many computer-controlled systems can be broken down into subsystems. This means that the process identified when you first described how the system operated could itself have a controller, processes, actuators and sensors.