% NOT-gate EAST
\newsavebox{\note}
\savebox{\note}(10,6){
\begin{picture}(10,6)
\put(0,3){\line(1,0){2}}     % input
\put(2,0){\line(0,1){6}}
\put(7.75,3){\circle{1.5}}
\put(2,6){\line(5,-3){5}}
\put(7,3){\line(-5,-3){5}}
\put(8.5,3){\line(1,0){1.5}}      % output
\end{picture}
}