Digital Electronics Quiz Vol-1

1. 1’s complement of the binary 101101 is

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

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

4. The Hexadecimal for binary 1001110 is

5. A three digit decimal number requires ________ for representation in the conventional BCD format.

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

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

8. The basic memory elements in digital circuits are made up of

9. IC Number of an AND gate is______

10. How many flip-flops are there IC 7475?

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

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

13. The three inputs AND gate has______number of operations.

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

15. The Hexadecimal of the decimal number 45.0 is ______

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

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

18. Decimal number 45 in binary is

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

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

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

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

23. Logic Gates in digital electronics are

24. The base of the octal number system is

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

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

27. 2’s complement of the binary number 10110 is

28. Convert the binary 111011 into decimal

29. Which two of the following are universal gates?

30.

Identify the Gate for this Symbol and Expression above

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

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

33. The function of a NOT Gate is to

34. Which of the following expressions is in the sum-of-products (SOP) form?

35. Latch is a device with ___

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