\documentclass[a4]{jarticle}
\usepackage{pstricks}
\setlength{\textwidth}{18cm}
\setlength{\hoffset}{-1.2in}

\begin{document}
\begin{tabular}{cc}
\input op1 &
\input op2 \\
\input op3 &
\input op4 
\end{tabular}

\input ircircuit

\end{document}
