• Logisim home page
• Guide to Being a Logisim User
  • Beginner's tutorial
    • Step 0: Orienting yourself
    • Step 1: Adding gates
    • Step 2: Adding wires
    • Step 3: Adding text
    • Step 4: Testing your circuit
  • Libraries and attributes
    • The explorer pane
    • The attribute table
    • Tool and component attributes
  • Subcircuits
    • Creating circuits
    • Using subcircuits
    • Debugging subcircuits
    • Logisim libraries
  • Wire bundles
    • Creating bundles
    • Splitters
    • Wire colors
  • Combinational analysis
    • Opening Combinational Analysis
    • Editing the truth table
    • Creating expressions
    • Generating a circuit
  • Menu reference
    • The File menu
    • The Edit menu
    • The Project menu
    • The Simulate menu
    • The Window and Help menus
  • Memory components
    • Poking memory
    • Pop-up menus and files
    • Hex editor
  • Logging
    • The Selection tab
    • The Table tab
    • The File tab
  • Application preferences
    • The Template tab
    • The Tools tab
    • The International tab
    • The Experimental tab
    • The command line
  • Project options
    • The Canvas tab
    • The Simulation tab
    • The Toolbar tab
    • The Mouse tab
  • Value propagation
    • Gate delays
    • Oscillation errors
    • Shortcomings
  • JAR libraries
    • Gray Code Incrementer
    • Library Class
    • Simple Gray Code Counter
    • Gray Code Counter
    • Guidelines
  • About the program
    • GNU General Public License
• Library Reference
  • Base library
    • Poke Tool
    • Edit Tool
    • Select Tool
    • Wiring Tool
    • Text Tool
    • Menu Tool
    • Splitter
    • Pin
    • Probe
    • Clock
    • Text
  • Gates library
    • Constant
    • NOT Gate
    • Buffer
    • AND/OR/NAND/NOR Gate
    • XOR/XNOR/Even/Odd Gate
    • Controlled Buffer/Inverter
  • Plexers library
    • Multiplexer
    • Demultiplexer
    • Decoder
    • Priority Encoder
    • Bit Selector
  • Arithmetic library
    • Adder
    • Subtractor
    • Multiplier
    • Divider
    • Negator
    • Comparator
    • Shifter
  • Memory library
    • D/T/J-K/S-R Flip-Flop
    • Register
    • Counter
    • Shift Register
    • Random
    • RAM
    • ROM
  • Input/Output library
    • Button
    • Joystick
    • Keyboard
    • LED
    • 7-Segment Display
    • Hex Digit Display
    • LED Matrix
    • TTY
  • Legacy library
    • Logisim 1.0 D/J-K Flip-Flop
    • Logisim 1.0 8-Bit Register

The Canvas tab

The Canvas tab allows configuration of the circuit drawing area's appearance.

There are seven options.

• The Printer View check box specifies whether to display the circuit on the screen in the same way it is displayed through the printer. Normally this is off, and Logisim displays the on-screen circuit with indications of the current circuit state, and it displays some hints about component interface (most particularly, it draws legs on OR gates to indicate where they would connect). The printer view, though, omits indications of state, and it omits such interface hints.

• The Show Grid check box specifies whether to draw dots in the background indicating the grid size.

• The Show Attribute Halo check box specifies whether to draw the pale teal oval around the attribute or tool whose attributes are currently displayed in the attribute table.

• The Show Component Tips check box specifies whether to display the "tool tips" that will temporarily appear when the mouse hovers components supporting them. For example, if you hover over a subcircuit component's pin, it will display the label of the corresponding pin within the subcircuit - or it will display the subcircuit's name it has no label. Hovering over one of the ends of a splitter will tell you the bits to which that end corresponds. In addition, all components in the Memory and Plexers libraries will provide information about their inputs and outputs via tips.

• The Zoom Factor drop-down menu allows you to "blow up" or "condense" the image by a ratio. Zooming into a circuit is useful for live classroom demonstrations where the screen resolution is too small to view the circuit from the back of the classroom; zooming out can be useful for a orienting yourself to very large circuit.

• The First Radix When Wire Poked drop-down menu configures how values are displayed when a wire is clicked using the Poke Tool. Clicking temporarily displays the value until the user clicks elsewhere in the circuit.

• The Second Radix When Wire Poked drop-down menu configures the second part of the value display.

Next: The Simulation tab.