A directory of Objective Type Questions covering all the Computer Science subjects.

1. Which of the following shift operations divide a signed binary number by 2 ?
a. Logical left shift
b. Logical right shift
c. Arithmetic left shift
d. Arithmetic right shift
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Answer: (b).Logical right shift

2. Normally digital computers are based on
a. AND and OR gates
b. NAND and NOR gates
c. NOT gate
d. None of the above
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Answer: (b).NAND and NOR gates

3. BCD stands for
a. Boolean code definition
b. Binary coded division
c. Binary coded decimal
d. None of the above
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Answer: (c).Binary coded decimal

4. The basic circuit ECL supports the
a. NAND logic
b. NOR logic
c. EX-OR logic
d. OR-NOR logic
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Answer: (d).OR-NOR logic

5. An adder-subtractor single unit can be designed using full adder and
a. OR gates
b. XOR gates
c. NOR gates
d. NAND gates
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Answer: (b).XOR gates

6. Which of the following is not a universal building block ?
a. 2 input NAND gate
b. L3 input NAND gate
c. 2 input XOR gate
d. None of the above
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Answer: (c).2 input XOR gate

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