The Canvas tab

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

There are eight 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, 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 Ghosts check box specifies whether to draw a light-gray outline of a component to be added as the mouse moves across the canvas. For example, if you select the AND gate tool and move the mouse into the window (without pressing the button), a gray outline of an AND gate will display where the AND gate will appear when the mouse is clicked. Unselecting the check box will disable this behavior.

• 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 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 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 configures the second part of the value display.

Next: The Simulation tab.