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MCQs

Total Questions : 275 | Page 6 of 28 pages
Question 51. In one’s complement 8 bit representation 11111111 represents
  1.    -1
  2.    -0
  3.    +0
  4.    1
 Discuss Question
Answer: Option B. -> -0
Question 52. The five flags in 8085 are designated as
  1.    Z, CY, S, P and AC
  2.    D, Z, S, P, AC
  3.    Z, CY, S, D, AC
  4.    Z, C, S, P, AC
 Discuss Question
Answer: Option A. -> Z, CY, S, P and AC
Question 53. An e-mail message can be sent to many recipients.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 54. For the number A[15:0] = 0110110010001111, A[14:13] is ______ A[3:2].
  1.    The same as
  2.    Greater than
  3.    Cannot be determined
  4.    Less than
 Discuss Question
Answer: Option A. -> The same as
Question 55. Because we wish to allow each ASCII code to occupy one location in memory, most memories are __________ addressable.
  1.    BYTE
  2.    NIBBLE
  3.    DOUBLEWORD (32 bits)
  4.    WORD (16 bits)
 Discuss Question
Answer: Option A. -> BYTE
Question 56. In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is
  1.    Relational, assignment, arithmetic
  2.    Arithmetic, relational, assignment
  3.    Arithmetic, assignment, relational
  4.    Assignment, relational, arithmetic
 Discuss Question
Answer: Option B. -> Arithmetic, relational, assignment
Question 57. A 37 bit mantissa has an accuracy of
  1.    6 decimal places
  2.    11 decimal places
  3.    8 decimal places
  4.    10 decimal places
 Discuss Question
Answer: Option B. -> 11 decimal places
Question 58. We say that a set of gates is logically complete if we can build any circuit without using any other kind of gates. Which of the following sets are logically complete
  1.    Set of {EXOR, NOT}
  2.    Set of {AND,OR}
  3.    Set of {AND,OR,NOT}
  4.    None of these
 Discuss Question
Answer: Option C. -> Set of {AND,OR,NOT}
Question 59. DS directive in 8085
  1.    Forces the assembler to reserve one byte of memory
  2.    None of these
  3.    Forces the assembler to reserve a specified number of bytes in the memory
  4.    Forces the assembler to reserve a specified number of consecutive bytes in the memory
 Discuss Question
Answer: Option D. -> Forces the assembler to reserve a specified number of consecutive bytes in the memory
Question 60. In 8086 the number of bytes which can be addressed directly is about
  1.    100000
  2.    10000
  3.    1000
  4.    one million
 Discuss Question
Answer: Option D. -> one million

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