Modified signed-digit trinary arithmetic by using optical symbolic substitution
Abdul Ahad S. Awwal, Muhammad Najam-ul-Islam, Mohammad A. Karim · Applied Optics · 1992
Carry-free addition and borrow-free subtraction of modified signed-digit trinary numbers with optical symbolic substitution are presented. The proposed two-step and three-step algorithms can be easily implemented by using phase-only holograms, optical content-addressable memories, a multichannel correlator, or a polarization-encoded optical shadow-casting system.