Answers to logic gate question
<ul><li><a href="//commons.wikimedia.org/wiki/File:AND_gate.svg" title="File:AND gate.svg">AND_gate.svg</a>: Arturo Urquizo</li>
<li><a href="//commons.wikimedia.org/wiki/File:OR_gate.svg" title="File:OR gate.svg">OR_gate.svg</a>: Arturo Urquizo</li>
<li><a href="//commons.wikimedia.org/wiki/File:NOT_gate.svg" title="File:NOT gate.svg">NOT_gate.svg</a>: Arturo Urquizo</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Pluke" title="User:Pluke">Pluke</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Pluke" title="User talk:Pluke"><span class="signature-talk">talk</span></a>)</li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:AND_gate.svg" title="File:AND gate.svg">AND_gate.svg</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:OR_gate.svg" title="File:OR gate.svg">OR_gate.svg</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:NOT_gate.svg" title="File:NOT gate.svg">NOT_gate.svg</a></li></ul>