Radix-2 signed-digit adder: one operand conventional, one operand redun-
dant, result redundant.
X + X:- Y+ Yf- X/+l X--1 Yi+l Yf--1
l l
hi+)
I~J ~0,y jZi_lj ~i-1
{0,1}
9
1 i_1 ti_l
{0,1}, ~ {-1,0}
s. + s_ S+_l s i_ 1
l l
F ! 6 U R [ 2.38 Radix-2 signed-digit adder: both operands and result redundant.
2o13
Concluding Remarks
We have presented several adder schemes, which differ in characteristics such as
delay, area, and energy dissipation. Although the structures are different, ...
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