Constant number serial pipeline multipliers

The pipeline form of the serial/parallel multiplier for constant numbers, w hich operates without insertion of zero words between successive data, is p resented. The constant number is in Canonical Signed Digit (CSD) form and t he other factor in two's complement form. The CSD form was chosen because i t yields significant hardware reduction. Also, for the above data forms the Lyon's serial pipeline multiplier is examined. For these designs, a specia l algorithm for the multiplication of two's complement numbers with constan t numbers in CSD representation was developed. The proposed serial pipeline multipliers are compared with the existing schemes from the point of hardw are complexity.