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- <title>Creating circuits</title>
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- <h1>Creating circuits</h1>
- <p>Every Logisim project is actually a library of circuits. In
- its simplest form, each project has only one circuit (called
- "main" by default), but it is easy to add more:
- Select Add Circuit... from the Project menu, and type any name
- you like for the new circuit you want to create.</p>
- <p>Suppose we want to build a 2-to-1 multiplexer named "2:1 MUX."
- After adding the circuit, Logisim will look like this.</p>
- <center><img src="../../../../en/img-guide/subcirc-2-add.png" width="393" height="285"></center>
- <p>In the explorer pane, you can now see that the project now
- contains two circuits, "main", and "2:1 MUX." Logisim draws a
- magnifying glass over the icon of the circuit currently being
- viewed; the current circuit name also appears in the window's
- title bar.</p>
- <p>After editing the circuit to appear like a 2:1 multiplexer,
- we might end up with the following circuit.</p>
- <center><img src="../../../../en/img-guide/subcirc-2-done.png" width="393" height="285"></center>
- <p><strong>Next:</strong> <a href="using.html">Using subcircuits</a>.</p>
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