# Arithmetic Circuits – Exercise – 1

Exercise – 1

1. It is a simple computational digital circuit built from logic gates :

(d) None of the above

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2. In order to add 1111+1101, we require :

(a) One FA and one HA
(b) Two FA and one HA
(c) Two FA and two HA
(d) Three FA and one HA

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3. A half adder can be used only for adding :

(a) 1s
(b) 2s
(c) 4s
(d) 8s

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4. Parallel adder is :

(a) Sequential circuits
(b) Combinational circuits
(c) Either sequential or combinational circuits
(d) None of above

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5. It is a circuit, which subtracts two inputs each of one bit :

(a) Full Subtractor
(b) Half Subtractor

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