\magnification= \magstep1
\font\largerbold = cmbx10 scaled \magstep1
\font\ld = cmbx10 scaled \magstep2
\nopagenumbers
\input epsf
\def\tableskip{&$\vphantom{\ld 0}$&&&&&&&&&&&&&&&&&&&&&&&\cr}
\hoffset=-.7in
\ld
\vfil
{\offinterlineskip
\def\tablerule{\noalign{\hrule}}
\halign{\tabskip=.7em plus 1em  \strut \vrule width2pt# & # 
&\vrule width2pt#&#&\vrule width2pt#&#&\vrule width2pt#&#&\vrule
width2pt#&#&\vrule width2pt#& # &\vrule width2pt#
& # &\vrule width2pt#& # &\vrule width2pt#& # &\vrule width2pt#& #
&\vrule width2pt#
& # &\vrule width2pt#& # &\vrule width2pt#& # &\vrule width2pt#& #
&\vrule width2pt#& #
\cr 
\noalign{\hrule height1pt depth1pt}\tableskip
&{\bf Your message}\hfil&&$\vphantom{\ld 0}\hphantom{\ld
00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&\cr 
\tableskip\noalign{\hrule height1pt depth1pt}
&&&&&&&&&&&&&&&&&&&&&&&\cr
\noalign{\hrule height1pt depth1pt}\tableskip
&{\bf Random bitstream}&&$\vphantom{\ld 0}\hphantom{\ld
0}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&\cr 
\tableskip\noalign{\hrule height1pt depth1pt}
&&&&&&&&&&&&&&&&&&&&&&&\cr
\noalign{\hrule height1pt depth1pt}\tableskip
&{\bf Xor of two streams}&&$\vphantom{\ld 0}\hphantom{\ld 00}
$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&\cr 
\tableskip\noalign{\hrule height1pt depth1pt}}
}

\vfil



{\offinterlineskip
\def\tablerule{\noalign{\hrule}}
\halign{\tabskip=.7em plus 1em  \strut \vrule width2pt# & # 
&\vrule width2pt#&#&\vrule width2pt#&#&\vrule width2pt#&#&\vrule
width2pt#&#&\vrule width2pt#& # &\vrule width2pt#
& # &\vrule width2pt#& # &\vrule width2pt#& # &\vrule width2pt#& #
&\vrule width2pt#
& # &\vrule width2pt#& # &\vrule width2pt#& # &\vrule width2pt#& #
&\vrule width2pt#& #
\cr 
\noalign{\hrule height1pt depth1pt}\tableskip
&{\bf Message received}\hfil&&$\vphantom{\ld 0}\hphantom{\ld
00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&\cr 
\tableskip\noalign{\hrule height1pt depth1pt}
&&&&&&&&&&&&&&&&&&&&&&&\cr
\noalign{\hrule height1pt depth1pt}\tableskip
&{\bf Random bitstream}&&$\vphantom{\ld 0}\hphantom{\ld
0}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&\cr 
\tableskip\noalign{\hrule height1pt depth1pt}
&&&&&&&&&&&&&&&&&&&&&&&\cr
\noalign{\hrule height1pt depth1pt}\tableskip
&{\bf Xor of two streams}&&$\vphantom{\ld 0}\hphantom{\ld 00}
$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&&$\vphantom{\ld 0}\hphantom{\ld 00}$&\cr 
\tableskip\noalign{\hrule height1pt depth1pt}}
}

\vfil
\eject\end
