For an N-bit ripple-carry adder, it’s far more important to optimize tcarry than tsum.
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Which one in the following is the correct expression for “carry delete”?
A. ) D=A∙B
B. ) D=A ̅∙B ̅
C. ) D=A ̅∙B
D. ) D=A∙B ̅
Which one in the following belongs to arithmetic unit? (Mark out all the correct items)
A. ) RAM
B. ) Arbiters
C. ) Shifter
D. ) Finite state machine
Which one in the following is part of a generic digital processor? (Mark out all the correct items)
A. ) Datapath
B. ) Memory
C. ) Control unit
D. ) I/O
Mark out all the correct statements about the distributed rc line.
A. ) Delay of a wire in the distributed rc line is a quadratic function of its length
B. ) Delay of the distributed rc line is one half of the delay that would have been predicted by the lumped RC model
C. ) rc delays should only be considered when tp,rc >> tp,gate of the driving gate
D. ) rc delays should only be considered when the rise (fall) time at the line input is smaller than RC, R and C are lumped resistance and capacitance of the wire respectively
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