The 7400 series is a collection of frequentlyused TTL components. With the possible exception of +5V and ground, we will not beusing these very much. Discrete devices consist ofelectrical components, such as power supply connections, batteries,etc. I/O includesswitches, keyboards, and probes. Generic devices include more complexbuilding blocks, which we will not be using in this lab. Gates are the standard simple logicgates, such as AND, OR, and NOT. The devicesavailable to you are grouped into five classes or libraries: gates, generic, I/O, discretes, and 7400 series TTL as shown in the menu above. It should look something like the menu above. Make surethat the Circuit window is selected (it will appear highlighted as inthe screen image above). Let's start with a very simple circuit: an AND gate. We are now ready to enter gate schematics. The Circuits window is used for drawing schematics, and the lowerTiming window displays waveforms of instrumented "nodes" (that is,the labeled wires) within the schematic, similar to an oscilloscopetrace. LogicWorks is a tool for entering gate levelschematics of a digital system and performing simulations of itsbehavior.ĭouble-clicking on the LogicWorks icon results in the followingscreen: In this section, you will use LogicWorks to enter the schematicfor the half-adder. Draw thefull-adder in the space provided. Repeat Problem 1 for the full-adder circuit, which takes threeinputs and produces the two outputs SUM and CARRY. Fill in the truth table for thebehavior of the half-adder: X Y Sum Carry 0 0 0 1 1 0 1 1ĭraw a schematic for the half-adder in the space above. The half-adder is a function that takes two inputs, X and Y, andproduces two outputs, SUM and CARRY. Logicworks circuit install#Install logic works, type the following at the dos prompt: If there is no logic directory on the c drive then. Spelling andmechanics count! You may fill out the tables by hand.any drawingsmust be attached. Please type all of your (attached) written work. If you are familiar with the interface, pleasehelp out fellow students who might not be.įor each lab you will need to hand in the summary sheet (the lastpage of this and future assignments) and any hardcopy requested(indicated in the text by a bullet symbol). If you are unfamiliar with the Windows/Macintosh interface, find afellow student who is familiar with it and work with that person forthis first assignment. Logicworks circuit how to#After completing thisassignment, you should understand how to draw circuit schematics andsimulate simple combinational circuits. This lab will introduce you to LogicWorks. Introduction to Windows/Macintosh(TM) and LogicWorks Label yourattachments (Problem 1, Problem 2, etc., and put them in order). This is the other window where important things happen.Please fill out this lab and hand it in with the requiredprintouts attached. 1.3 Timing Window When active, the Timing Window will display the waveforms associated with your circuit. 1.2 Parts Palette The Parts Palette, or the Library, contains all of the parts that you will use to design circuits, and some parts that you will not use. Circuits in the Drawing Window act in concert with timing information in the Timing Window, as will be seen later. TOOLS Drawing Window Drawing Toolbar Simulation Toolbar Parts Palette Timing Window 1.1 Drawing Window The Drawing Window, also called the Design Window, will contain the circuits you design, and is your main interface with the software. "Double-click" and "click-and-hold" should be performed as indicated. Note: Unless mentioned, all mouse-click are left clicks. It is recommended that you go through this tutorial while you are seating in front of the computer for practice. Since the design and simulation steps are meant to verify the correct operation of a circuit before it is implemented, and as a result, save valuable time. INTRODUCTION Logic Works provides the student with a great deal of flexibility in the design and simulation of the digital circuits that he or she will implement using the chip set and trainer kit. Thweatt Revised and Modified by: Ahmad Tarakji-Sept 2004 0. Ong>Lectureong> ong>Notesong> on the Use of Logic Works (Version 4) By: Jason S.
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