An N-bit carry look ahead adder, where N is a multiple of 4, employs ICs 74181…
GATE · 1997 · CS · Question 2 subparts
An N-bit carry look ahead adder, where N is a multiple of 4, employs ICs 74181 (4 bit ALU) and 74182 (4 bit carry look ahead generator). The minimum addition time using the best architecture for this adder is
- A.
proportional to N
- B.
proportional to logN
- C.
a constant
- D.
none of the above
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