1. The basic logic gate whose output is the complement of the input is the ?

OR gate

AND gate

inverter

comparator

Answer: inverter

Explanation:


2. The output of an AND gate with three inputs, A, B, and C, is HIGH when ________ ?

A = 1, B = 1, C = 0

A = 0, B = 0, C = 0

A = 1, B = 1, C = 1

A = 1, B = 0, C = 1

Answer: A = 1, B = 1, C = 1

Explanation:


3. The output of a NOR gate is HIGH if ________ ?

all inputs are HIGH

any input is HIGH

any input is LOW

all inputs are LOW

Answer: all inputs are LOW

Explanation:


4. The output of an exclusive-NOR gate is HIGH if ________ ?

the inputs are equal

one input is HIGH, and the other input is LOW

the inputs are unequal

none of the above

Answer: the inputs are equal

Explanation:


5. The minimum number of NAND gates required to implement the Boolean function ???? + ???????? ?+ ???????? ????? is equal to ?

Zero

1

4

7

Answer: Zero

Explanation:


6. The output of a NOT gate is HIGH when ________ ?

the input is LOW

the input is HIGH

power is applied to the gate's IC

power is removed from the gate's IC

Answer: the input is LOW

Explanation:


7. How many output is high of NOR GATE ?

2

3

1

4

Answer: 1

Explanation:


8. NAND gate has ?

HIGH inputs and a HIGH output

LOW inputs and LOW output

HIGH inputs and LOW outputs

LOW inputs and a HIGH output

Answer: LOW inputs and a HIGH output

Explanation:


9. Consider the following statements : 1. Minimization using Karnaugh map may not provide unique solution. 2. Redundant grouping in Karnaugh map may result in non minimized solution. 3. Don't care states if used in Karnaugh map for minimization, the minimal solution is not obtained. Which of the statements given above are correct ?

1, 2 and 3

2 and 3 only

1 and 3 only

1 and 2 only

Answer: 1 and 2 only

Explanation:


10. A 16-square on a K-map eliminates how many variables ?

4

8

6

3

Answer: 4

Explanation: