IntroToLogisim-evolutin.pdf

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View the original document in French: http://reds-data.heig-vd.ch/logisim-evolution/tutoLogisim.pdf Translated to English by Moshe Berman. Introduction to Using Logisim 1. Introduction Logisim is an open source program which allows you to design and simulate logical circuits. 1 This document is a tutorial which describes how to establish a digital system with the help of the schematic diagram editor. We will explain the necessary steps to design, simulate, and implement a project based on the Altera EPM 25p-25p. There are different ways to formally describe digital systems: hardware description languages (HDL,) truth tables, state diagrams, or schematics. Logisim allows us to work only with schematics. The first chapter will explain how to make our first diagram. In figure 1, you can see the Logisim user interface. One of the features of Logisim is that it allows simulating and editing schematics at the same time. We will explain later in this document how to simulate a circuit and how to implement it on the laboratory card. Open Logisim and you will be prompted to enter a username - see Figure 2. It will be used to tag each component you create, to prevent plagiarism. 1. Click Change User 2. Enter your first and last name in the Add New User box in the same form as your Heig-vd login, without special characters, separated by an underscore. 3. Click Add 4. Click Close 5. Click Accept Conditions The list of users is saved on the machine. On subsequent uses, simply click Accept Conditions and select your active user from the list. The latest version of Logisim can be downloaded at https://reds.heig-vd.ch/share/ logisim-evolution/logisim- 1 evolution.t.jar. Logisim contains an auto-update mechanism. As soon as a new version is available, you will receive a notification and you will have the option to update your copy.
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Figure 1: The Logisim interface Figure 2: The login window Figure 3: Add a user
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2. Edit Mode 1. To use edit mode, simply select the arrow, as shown in Figure 1.
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