Logic circuit with NAND and OR gates
<b>Original: </b> Rafael Fonseca de Souza; <b>Vectorization: </b> <a href="//commons.wikimedia.org/wiki/User:Perhelion" title="User:Perhelion">User:Perhelion</a>
12/05/2012 (original upload date) vectorization 16 August 2016 (upload date)
Own work based on: <a href="//commons.wikimedia.org/wiki/File:2._Teorema.png" title="File:2. Teorema.png">2. Teorema.png</a>