Digital Electronics - Digital Arithmetic Operations and Circuits - Discussion

14. 

Fast-look-ahead carry circuits found in most 4-bit full-adder circuits:

[A]. determine sign and magnitude
[B]. reduce propagation delay
[C]. add a 1 to complemented inputs
[D]. increase ripple delay

Answer: Option B

Explanation:

No answer description available for this question.

S.Sukanya said: (May 24, 2016)  
What is meant by fast look-ahead carry circuit? Someone, please explain.

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