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2. Consider an 8x8 multiplier similar to the 4x4 one in Figure 5.18c. Assume that each AND
gate has a delay of A and each adder has a delay of B. What is the overall delay of this
multiplier?
Solution
the delay due to And gate=1unit AND gate delay * no of bits
delay due to and gate=8A
delay due to adder:
delay at levels 1 to ( m – 1) units of n-bit adders = ( m – 1) × delay of one-unit 8-bit adder
m=8 bit, delay=B
so delay due to adder=7B
over all delay=8A+7B

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2. Consider an 8x8 multiplier similar to the 4x4 one in Figure 5.18c..pdf

  • 1. 2. Consider an 8x8 multiplier similar to the 4x4 one in Figure 5.18c. Assume that each AND gate has a delay of A and each adder has a delay of B. What is the overall delay of this multiplier? Solution the delay due to And gate=1unit AND gate delay * no of bits delay due to and gate=8A delay due to adder: delay at levels 1 to ( m – 1) units of n-bit adders = ( m – 1) × delay of one-unit 8-bit adder m=8 bit, delay=B so delay due to adder=7B over all delay=8A+7B