Optically reconfigurable gate arrays (ORGAs) consist of a gate array VLSI, a holographic memory and a laser diode array that can achieve rapid reconfiguration and numerous reconfiguration contexts. The gate array of an ORGA is optically reconfigured using diffraction patterns from a holographic memory that is addressed using a laser diode array. This paper shows the perfect demonstration of a four-context Optically Reconfigurable Gate Array. Also, the experimental results of a superimposing technique are presented.