Generalized look-ahead number conversion from signed-digit to complement representation with optical logic operations
Conference
Qian, F, Li, G. (2001). Generalized look-ahead number conversion from signed-digit to complement representation with optical logic operations
. Proceedings of SPIE - The International Society for Optical Engineering, 4470 231-238. 10.1117/12.449664
Qian, F, Li, G. (2001). Generalized look-ahead number conversion from signed-digit to complement representation with optical logic operations
. Proceedings of SPIE - The International Society for Optical Engineering, 4470 231-238. 10.1117/12.449664
In this paper a generalized look-ahead logic algorithm for number conversion from signed-digit to its complement representation is developed. By properly encoding the signed digits, all the operations are performed by binary logic, and unified logical expressions can be obtained for conversion from modified-signed-digit (MSD) to 2's complement, trinary signed-digit (TSD) to 3's complement, and quarternary signed-digit (QSD) to 4's complement. For optical implementation, a parallel logical array module using electron-trapping device is employed, which is suitable for realizing complex logic functions in the form of sum-of-product. The proposed algorithm and architecture are compatible with a general-purpose optoelectronic computing system.
