Interesting Example: Carry Bypass Adder

Full Adder

Full Adder

co

and

c2

co

a0

b0

a1

b1

c1

so

s1

mux

0

1

p1

p0

pi: carry propogate from state i

Pi: ai XORbi

Lehman, Birla - IRETrans. Electron. Comput. , 1961

V. Oklobdzija - Jrnl. of VLSI Signal Processing, 1991

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