\documentclass[crop,tikz]{standalone}
\input{common-headers}
\usetikzlibrary{circuits.logic.CDH}
\usetikzlibrary{decorations.markings}
\usepackage{ifthen}

\newcommand{\gimmelegs}[1]{%
  \draw[black!50,densely dash dot] (#1.east)    -- +( 4mm,0cm);
  \draw                            (#1.input 1) -- +(-4mm,0cm);
  \draw[black!50,densely dash dot] (#1.input 2) -- +(-4mm,0cm);
  \ifthenelse{\equal{\detokenize{#1}}{\detokenize{cell}}}{}{%
    \node[xshift=-3mm,fill,circle,inner sep=1pt] (in#1) at (#1.input 1) {};
  }
}

\begin{document}

% Sum inputs
\begin{tikzpicture}[circuit logic CDH, node distance=20mm]
  \node (cell)    [and gate,fill=black!50]  {}; \gimmelegs{cell}
  \node (celle)   [and gate,right=of cell]  {}; \gimmelegs{celle}
  \node (cellse)  [and gate,below=of celle] {}; \gimmelegs{cellse}
  \node (cells)   [and gate,below=of cell]  {}; \gimmelegs{cells}
  \node (cellsw)  [and gate,left=of cells]  {}; \gimmelegs{cellsw}
  \node (cellw)   [and gate,left=of cell]   {}; \gimmelegs{cellw}
  \node (cellnw)  [and gate,above=of cellw] {}; \gimmelegs{cellnw}
  \node (celln)   [and gate,above=of cell]  {}; \gimmelegs{celln}
  \node (cellne)  [and gate,above=of celle] {}; \gimmelegs{cellne}

  \node[white,fill=black,circle,inner sep=1pt]
    (hub) at (barycentric cs:cell=1,cellnw=1) {$\sum$};

  \begin{scope}[decoration={markings,mark=at position 0.5 with {\arrow{Stealth}}}]
    % Let's go to the hub
    \draw[postaction={decorate},out=-90,in=130]               (incellnw) to (hub);
    \draw[postaction={decorate},out=-90,in=90]                (incelln)  to (hub);
    \draw[postaction={decorate},out=-90,in=40]                (incellne) to (hub);
    \draw[postaction={decorate},out=90 ,in=10,looseness=0.5]  (incelle)  to (hub);
    \draw[postaction={decorate},out=90 ,in=-20]               (incellse) to (hub);
    \draw[postaction={decorate},out=90 ,in=160]               (incellw)  to (hub);
    \draw[postaction={decorate},out=90 ,in=200,looseness=1.5] (incellsw) to (hub);
    \draw[postaction={decorate},out=90 ,in=-120]              (incells)  to (hub);

    % Then feedback my cell
    \draw[postaction={decorate},thick,out=-70 ,in=90] (hub) to (cell.north);
  \end{scope}

  \begin{scope}[on background layer]
    \draw[thin] ($ (cell.center) + (-4cm,-3.5cm) $)
      rectangle ($ (cell.center) + ( 4cm, 3.5cm) $);
  \end{scope}
\end{tikzpicture}



\renewcommand{\gimmelegs}[1]{%
  \draw (#1.east) -- +(4mm,0cm);
  \draw[black!50,densely dash dot] (#1.input 1) -- +(-4mm,0cm);
  \draw[black!50,densely dash dot] (#1.input 2) -- +(-4mm,0cm);
  \ifthenelse{\equal{\detokenize{#1}}{\detokenize{cell}}}{}{%
    \node[xshift=2mm,fill,circle,inner sep=1pt] (out#1) at (#1.output) {};
  }
}

% Sum outputs
\begin{tikzpicture}[circuit logic CDH, node distance=20mm]
  \node (cell)    [and gate,fill=black!50]  {}; \gimmelegs{cell}
  \node (celle)   [and gate,right=of cell]  {}; \gimmelegs{celle}
  \node (cellse)  [and gate,below=of celle] {}; \gimmelegs{cellse}
  \node (cells)   [and gate,below=of cell]  {}; \gimmelegs{cells}
  \node (cellsw)  [and gate,left=of cells]  {}; \gimmelegs{cellsw}
  \node (cellw)   [and gate,left=of cell]   {}; \gimmelegs{cellw}
  \node (cellnw)  [and gate,above=of cellw] {}; \gimmelegs{cellnw}
  \node (celln)   [and gate,above=of cell]  {}; \gimmelegs{celln}
  \node (cellne)  [and gate,above=of celle] {}; \gimmelegs{cellne}

  \node[white,fill=black,circle,inner sep=1pt]
  (hub) at (barycentric cs:cell=1,cellne=1) {$\sum$};

  \begin{scope}[decoration={markings,mark=at position 0.5 with {\arrow{Stealth}}}]
    % Let's go to the hub
    \draw[postaction={decorate},out=-90,in=130]               (outcellnw) to (hub);
    \draw[postaction={decorate},out=-90,in=90]                (outcelln)  to (hub);
    \draw[postaction={decorate},out=-90,in=40]                (outcellne) to (hub);
    \draw[postaction={decorate},out=90 ,in=10]                (outcelle)  to (hub);
    \draw[postaction={decorate},out=90 ,in=-80,looseness=1.5] (outcellse) to (hub);
    \draw[postaction={decorate},out=90 ,in=160]               (outcellw)  to (hub);
    \draw[postaction={decorate},out=90 ,in=200,looseness=1.2] (outcellsw) to (hub);
    \draw[postaction={decorate},out=90 ,in=-100]              (outcells)  to (hub);

    % Then feedback my cell
    \draw[postaction={decorate},thick,out=-120 ,in=90] (hub) to (cell.north);
  \end{scope}

  \begin{scope}[on background layer]
    \draw[thin] ($ (cell.center) + (-4cm,-3.5cm) $)
      rectangle ($ (cell.center) + ( 4cm, 3.5cm) $);
  \end{scope}
\end{tikzpicture}
\end{document}