Digital Electronics and Logic Design Mock Test

1. The 2s compliment form (Use 6 bit word) of the number 1010 is

2. A binary digit is called a

3. What is the binary equivalent of the Hexadecimal number 368 .

4. The hexadecimal number equivalent to (1762.46)8 is

5. The answer of the operation (10111)2*(1110)2 in hex equivalence is

6. The decimal equivalent of hex number 1A53 is

7. The NAND gate output will be low if the two inputs are

8. What is the binary equivalent of the Octal number 367

9. What is the binary equivalent of the decimal number 1011

10. The gray code equivalent of (1011)2 is

11. How many AND gates are required to realize Y = CD+EF+G

12. The Hexadecimal number equivalent of (4057.06)8 is

13. The excess 3 code of decimal number 26 is

14. ( 734)8 =( )16

15. -8 is equal to signed binary number

16. What is the binary equivalent of the decimal number 368.

17. The octal equivalent of (247) 10 is

18. DeMorgans first theorem shows the equivalence of

19. The simplification of the Boolean expression (A'BC')'+ (AB'C)' is

20. The decimal equivalent of Binary number 11010 is

21. The number 140 in octal is equivalent to

22. 1’s complement representation of decimal number of -17 by using 8 bit

23. 12-bit 2’s complement of –73.75 is

24. The NOR gate output will be low if the two inputs are

25. Determine the binary numbers represented by 25.5

26. The hexadecimal number for (95.5)10 is

27. Conversion of decimal number 10.625 into binary number:

28. What is decimal equivalent of BCD 11011.1100 ?

29. Conversion of fractional number 0.6875 into its equivalent binary number:

30. (2FAOC)16 is equivalent to

31. The decimal equivalent of ( 1100)2 is

32. Logic X-OR operation of (4ACO)H & (B53F)H results

33. The decimal number equivalent of (4057.06)8 is

34. Perform the following subtractions using 2’s complement method. 01000 – 01001

35. Subtraction of 01100-00011 using 2’s complement method. :

36. Convert decimal 153 to octal. Equivalent in octal will be

37. What is the binary equivalent of the decimal number 368

38. The hexadecimal number ‘A0’ has the decimal value equivalent to

39. The octal equivalent of hexadecimal (A.B)16 is

40. A three input NOR gate gives logic high output only when

41. The Extended ASCII Code (American Standard Code for Information Interchange) is a code

42. The binary value 1010110 is equivalent to decimal

43. A logic circuit with an output X = A(Bar)BC+AB(Bar) consists of .

44. 2's complement of hexadecimal number B70A is

45. A NAND gate's output is LOW if

46. The AND Gate performs a logical function

47. A NOR's gate output is HIGH if

48. NOR gate is formed by connecting

49. The boolean expression X = AB + CD represents

50. The OR gate performs Boolean .

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