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A number system with continuous valued digits and modulo arithmetic

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3 Author(s)
Saed, A. ; IceFrye Semicond., Kanata, Ont., Canada ; Ahmadi, M. ; Jullien, G.A.

This paper presents a novel number system based on signed continuous valued digits. Arithmetic operations in this number system are performed using simple analog circuitry, in contrast to the conventional implementation of arithmetic units by Boolean or multiple-valued logic circuits. Unlike the limited precision offered by classical analog arithmetic circuits, the ensemble of continuous valued digits that comprises a number in this system provides arbitrary implementation precision with standard analog circuitry. The number system also provides almost-carry-free arithmetic structures with digit level redundancy. In this paper, we introduce the mathematical foundations for positive and negative numbers, addition, multiplication, redundancy, radix conversions, and also the digit value integrity for circuit implementations. Potential applications are in the area of low noise and low cross-talk circuitry for arithmetic circuits used in mixed-signal systems.

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Computers, IEEE Transactions on  (Volume:51 ,  Issue: 11 )