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                                         THE SYSTEMS APPROACH TO CONTROL AND INSTRUMENTATION               2




                                         BLOCK DIAGRAM REPRESENTATION OF A SYSTEM

                    The designer of a system   At the level of abstraction appropriate for the present discussion, an
                    often begins with a   electronic system will be represented by a block diagram. Depending on
                    block diagram, in which   whether a given electronic system application is to (a) control, (b) measure or
                    major components are   (c) communicate, it will have one of the three block diagram configurations
                    represented as blocks.  shown Figure 2.1.
                                              In block diagram architecture, each functional component or subsystem is
                                         represented by an appropriately labeled block. The inputs and outputs for each


                    Figure 2.1
                    Block Diagrams for Various System Applications


















































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