% Author: Dr. Matthias Jung, DL9MJ
% Year: 2022
\begin{tikzpicture}
    \node at (0,0)    [rectangle, draw, anchor=west](a){\texttt{1}};
    \node at (a.east) [rectangle, draw, anchor=west](b){\texttt{1}};
    \node at (b.east) [rectangle, draw, anchor=west](c){\texttt{0}};
    \node at (c.east) [rectangle, draw, anchor=west](d){\texttt{0}};
    \node at (d.east) [rectangle, draw, anchor=west](e){\texttt{1}};
    \node at (e.east) [rectangle, draw, anchor=west](f){\texttt{0}};
    \node at (f.east) [rectangle, draw, anchor=west](g){\texttt{1}};
    \node at (g.east) [rectangle, draw, anchor=west](h){\texttt{1}};
    \node at (h.east) [rectangle, draw, anchor=west, fill=gray!50](i){\texttt{1}};
\end{tikzpicture}