Digital Electronics Quiz Vol-1 -(Basic Level)- Electroinvention

This is Digital Electronics Quiz Vol -1 which is of the basic level to intermediate. Check your knowledge in Digital Electronics. After Completing this you can also move on to Digital Electronics Quiz Vol -2 which is more advanced.

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1. How many entries in a truth table are necessary for an AND Gate with 4 inputs______

2. A Logical gate whose output is low when the inputs are same and output is high when inputs are differ, is called_________

X-OR Gate

X-NOR Gate

NOR Gate

None of the above

3. Latch is a device with ___

2 stable states

1 Stable state

3 stable state

No stable states

4. 1’s complement of the binary 101101 is

010010

010011

010101

110010

5. The three inputs AND gate has______number of operations.

6. 2’s complement of the binary number 10110 is

01001

01010

01011

01101

Identify the Gate for this Symbol and Expression above

X-NOR Gate

X-OR Gate

NAND Gate

NOR Gate

8. In a binary number system, the first digit (bit) from right to left is called______

MSB(Most Significant Bit)

LSB(Least Significant Bit)

First Bit

Left significant Bit

9. The Hexadecimal for binary 1001110 is

24F

10. A NOR Gate is an OR gate followed by a

AND Gate

NAND Gate

X-NOR Gate

NOT Gate

11. One of De Morgan’s theorems states that Simply stated, this means that logically there is no difference between:

a NAND and an OR gate with inverted inputs

a NOR and an AND gate with inverted inputs

an AND and a NOR gate with inverted inputs

a NOR and a NAND gate with inverted inputs

12. Which of the following gate will give a 0 when both of its inputs are 1?

X-OR

NAND

AND

13. A Karnaugh map (K-map) is an abstract form of ______ diagram organized as a matrix of squares.

Cycle Diagram

Venn Diagram

Triangular Diagram

Block Diagram

14. The base of the octal number system is

15. Convert the binary 111011 into decimal

16. An AND Gate of 3 inputs, 2 are high and one is low. What will be the output?

High

Low

Can be high or low

Keep alternating between high and low

17. Which two of the following are universal gates?

NAND and NOR

NAND and NOT

X-OR and X-NOR

X-NAND Gate and X-NOR

18. Select the correct logical expression for a NAND Gate from below

(A+B)’

(A*B)’

(A*B)

None of the above

19. The function of a NOT Gate is to

Multiply the input signal

Stop/ Resist the input signal

Inverting the input signal

Adding the two input signals

20. Decimal number 45 in binary is

101101

110110

110111

110101

21. In an X-NOR Gate, if input A is ‘0’ and input B is ‘1’, then the output will be

High (1)

Low(0)

Can’t define

No output

22. A ______ is a universal gate which is an AND Gate followed by NOT gate.

NOR Gate

NOT Gate

NAND Gate

None of the above.

23. Using the transformation method you can see that any POS realization of OR-AND with only _____

AND

NAND

NOR

NAND

24. In Boolean algebra, the bar sign (—) indicates______ gate operation.

NOT Gate

X-OR

AND Gate

25. AND gate is a logical gate that requires atleast______ input and produces only_______ outputs after performing the AND operation.

one input, two outputs

one input, one output

two inputs, one output

two inputs, two output

26. A latch is a _______ device in electronics circuits with 2 stable states.

Astable

Bistable

Monostable

All of the above

27. The gate that can be used to implement any Boolean expression is ________

X-OR

NAND

AND

28. Applying DeMorgan’s theorem to the expression , we get ________

None of the above.

29. The Karnaugh map method of minimization of switching function is very convenient and effective if the number of variable in the switching function is