Jan 25, 2019 #1 P promach Advanced Member level 4 Joined Feb 22, 2016 Messages 1,199 Helped 2 Reputation 4 Reaction score 5 Trophy points 1,318 Activity points 11,636 1) Why "the number of multiplicand-multiples reduced from n to ABOUT 2n/3" ? How is this being done ? 2) What does it actually mean by "applying this principle about log(base = 3/2) of n times, the number can only be reduced to 2" ? 3) Why the overall delay is O(log n) ? Why does fast carry adder has O(log n) delay ? 4) Why 2-bit Booth recoding only reduce height of wallace tree by one or two level ? What about multiplier bit-pair encoding ? 5) Why does the author suggest to use larger counters instead of full adders ? To speed up the number of intermediate stages ? 6) Why is Wallace Tree circuit irregular in terms of layout and routing ? 7) How is a 4-2 adder helping to increase circuit regularity ? Last edited: Jan 25, 2019
1) Why "the number of multiplicand-multiples reduced from n to ABOUT 2n/3" ? How is this being done ? 2) What does it actually mean by "applying this principle about log(base = 3/2) of n times, the number can only be reduced to 2" ? 3) Why the overall delay is O(log n) ? Why does fast carry adder has O(log n) delay ? 4) Why 2-bit Booth recoding only reduce height of wallace tree by one or two level ? What about multiplier bit-pair encoding ? 5) Why does the author suggest to use larger counters instead of full adders ? To speed up the number of intermediate stages ? 6) Why is Wallace Tree circuit irregular in terms of layout and routing ? 7) How is a 4-2 adder helping to increase circuit regularity ?
Jan 25, 2019 #2 P promach Advanced Member level 4 Joined Feb 22, 2016 Messages 1,199 Helped 2 Reputation 4 Reaction score 5 Trophy points 1,318 Activity points 11,636 I have typo mistake in the previous post, In question 3) it should be fast carry propagate adder instead of fast carry adder
I have typo mistake in the previous post, In question 3) it should be fast carry propagate adder instead of fast carry adder