<page xmlns="http://projectmallard.org/1.0/" type="guide" id="boolean"> <info> <link type="guide" xref="index#equation"/> </info> <title>Boolean Algebra</title> <p> Boolean algebra can be calculated using the AND, OR and XOR operators. </p> <example> <p> 010011₂ AND 110101₂ </p> </example> <p> Buttons for these symbols are available in <link xref="mouse">programming mode</link>. </p> <p> The NOT <link xref="function">function</link> inverts the bits in a number. The word size is set from the <guiseq><gui>Calculator</gui><gui>Preferences</gui></guiseq> menu. </p> <example> <p> NOT 010011₂ </p> </example> </page>