The new algorithm and optical architecture performming double and triple matrix products optically are introduced and experimentally demonstrated. The system is based on the outer matrix product method and the binary representation involving sign bit, which offers both high accuracy and bipolar number handling. The 1-dimensional liquid crystal spatial light modulator of which response time is 120 msec is used as the input device. It is interfaced with 6502 micro-processor in order to input the binary values of matrix elements in real time.
