NORMALIZING CIRCUIT OF BINARY-CODED DECIMAL NUMBER

摘要

PURPOSE:To attain a high-speed operation of a normalizing circuit of binary- coded decimal number by shifting the input data after detecting ''1'' that is most approximate to the most significant bit of the input data. CONSTITUTION:A preceding ''1'' detecting circuit 1 uses the data X of mantissa part as an input and detects ''1'' most approximate to the most significant bit MSB including this MSB and informs this detection information to an encoder 2. The encoder 2 converts the number of shifts into a code of binary display to perform normalization according to the received information. A shifter 3 obtains the input of the data X and shifts the data X according to the shift information which is coded by the encoder 2 to produce the nomalization data Y. This circuit ensures a normalizing action at a high speed.