Bit finder circuit

Details Bit finder circuit Bit finder circuit

G - Physics

06

F

G06F 7/74 (2006.01)

Patent

CA 2051026

A circuit to find the first bit 0 or 1 in an m-bit input word from a start bit onwards, the Positions of these bits being defined by an n-bit code. It includes a crosspoint matrix of m (4) rows and n (2) colums, each crosspoint including a change- over contact (ABC), with a make contact (AB) and a break contact (AC), and another make contact (AD). The rows of change-over contacts (ABC) are controlled by respective bits of the m-bit word and the break contacts (AC) of the change-over contacts (ABC) of each row are coupled to respective bits of the n-bit code identifying the bit of the m-bit word respectively controlling these break contacts. Furthermore, the make contacts (AB) of the change-over contacts (ABC) of a same column are connected in a closed loop, whilst the other make contacts (AD) of a same column are connected in a parallel to a same output terminal (IA, IB). the rows of these other make contacts being controlled by a single-row selection circuit (TR).

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