Slide 1 Chapter 1:Electronic Systems ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 2 2Introduction• “Electronic Systems:”– A label describing a group of devices controlled by a number of interconnected electronic components– Complexity ranges from 2-3 components to many millions– Regardless of complexity, all electronic systems are composed of a few basic types of components with well-defined behavior– Understanding the behavior of these fundamental electronic components will allow you to analyze, understand and troubleshoot all electronic systems. ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 3 3Representative Systems 1-5• Television–Electronic signals from cable or antenna allow for viewing of television programming– Televisions are built from electronic components– Invented 1927– HDTV 1990s ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________Slide 4 4Representative Systems• Computers– Accept inputs from a variety of sources to include mice, keyboards, switches, human voice, network, etc.–Allow for computations, production of a wide variety of outputs and manipulation of data– Computers are built from electronic components ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 5 5Representative Systems• Industrial Robots– These electro-mechanical systems perform a wide variety of functions• Medical–BioMed• Industrial–Seattle Times• Menial tasks• Hobbies –Robotics Club ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 6 6Representative Systems• Avionics –Short for Aviation Electronics– These are complex systems integrating navigational, flight control, communications, weapons control for military aircraft.– All built from common building blocks ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________Slide 7 7Representative Systems• The Internet– Interconnection of many subsystems– Utilizing computers, routers, hubs, switches, millions of miles of cable ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 8 8Building Blocks•The common theme in all of these systems is that they share the same electronic building blocks or components which are the subject of this course.End 1.1 ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 9 9• Block Diagram: A simplified representation of a system; they represents the relationships between functional system sections or blocks– Lines and arrows indicate flow of information or control signals– Bus: a group of wires that serve as data or address elements in a computer system– Control lines are bold, single arrows pointing from the controlling block to the controlled block• BD: Useful in understanding the general nature of a system– Provides the big picture without the detail– Helpful to gain understanding, and also to troubleshoot• See next slide for example1.2 System Notations ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________Slide 10 10System NotationsSimplified Block Diagramof a computer systemOur purpose here is to address the use of a block diagram. The EET 131 address computer systems ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 11 11Flowcharts•A flowchart is another way to describe the behavior of a system• Flowcharts are useful tools for:– Programming computers– Troubleshooting complex systems– Describing the operation of a system– Explaining system operations to users– Optimizing the design of a system ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 12 12Basic Flowchart SymbolsBasic flow chart symbolsA simplified flow chart for troubleshooting a computer systemAs a rule, block diagrams are concerned with electrical functions of system, where as flow charts are used to describe the behavior of a system ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________Slide 13 13Graphical Data• A graph is used to communicate technical details about the behavior of an electronic system• Many types of graphs are available– We will look at Linear, Logarithmic and Polar graphs• Graphs with equally-spaced divisions representing the