Which of the following statements is true? A full-adder is characterized by two
ID: 663164 • Letter: W
Question
Which of the following statements is true?
A full-adder is characterized by two inputs and two outputs.
A half-adder is characterized by three inputs and two outputs.
A 4-bit parallel adder can add two 4-bit decimal numbers.
To expand a 4-bit parallel adder too an 8-bit parallel adder, you must use two 4-bit adders with the carry output of one connected to the carry input of the other
A.A full-adder is characterized by two inputs and two outputs.
B.A half-adder is characterized by three inputs and two outputs.
C.A 4-bit parallel adder can add two 4-bit decimal numbers.
D.To expand a 4-bit parallel adder too an 8-bit parallel adder, you must use two 4-bit adders with the carry output of one connected to the carry input of the other
Explanation / Answer
Here the answer is option-D.... here A and B both are given as reverse...and in final option we have to expand parallel adder we must use 2 4-bit aders.and at every where we have to use carry bit for carry the external bit...here carry bit of previous output give as input to next one...finally we get the result.for know about carry bit we have to multiply the bits...
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