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MCQs

Total Questions : 228 | Page 6 of 23 pages
Question 51. An OR gate has 6 inputs. How many input words are in its truth table?
  1.    16
  2.    64
  3.    128
  4.    32
  5.    None of these
 Discuss Question
Answer: Option B. -> 64
Question 52. If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?
  1.    0000, 9999
  2.    None of these
  3.    0000, EEEE
  4.    0, 64
  5.    0000, FFFF
 Discuss Question
Answer: Option E. -> 0000, FFFF
Question 53. Which TTL sub-family has maximum speed?
  1.    low power TTL
  2.    high speed TTL
  3.    None of these
  4.    standard TTL
  5.    schottky-clamped TTL
 Discuss Question
Answer: Option E. -> schottky-clamped TTL
Question 54. A microprocessor has memory locations from 0000 to 3FFF. Each memory location stores 1 byte. How bytes can the memory store? Express this in kilobytes?
  1.    None of these
  2.    16,384, 16K
  3.    4,095, 4K
  4.    32,740, 32K
  5.    46,040, 46K
 Discuss Question
Answer: Option B. -> 16,384, 16K
Question 55. The m-bit parallel adder consists of:
  1.    m full adders
  2.    m-1 full adders
  3.    (m+1) full adders
  4.    None of these
  5.    m/2 full adders
 Discuss Question
Answer: Option A. -> m full adders
Question 56. Conversion of binary number 1100012 to its decimal number is
  1.    None of these
  2.    4910
  3.    3910
  4.    5010
  5.    2710
 Discuss Question
Answer: Option B. -> 4910
Question 57. The OR gate has two or more input signals. If any input is _____ the output is high.
  1.    All of these
  2.    None of these
  3.    high
  4.    low
 Discuss Question
Answer: Option C. -> high
Question 58. The EXCLUSIVE - NOR gate is equivalent to an _____ gate followed by an invertor.
  1.    OR
  2.    XOR
  3.    None of these
  4.    NAND
  5.    AND
 Discuss Question
Answer: Option B. -> XOR
Question 59. How many memory locations can 14 address bits access?
  1.    14
  2.    4096
  3.    None of these
  4.    8192
  5.    16384
 Discuss Question
Answer: Option E. -> 16384
Question 60. The ASCII code is a 7-bit code for
  1.    All of these
  2.    other symbols
  3.    None of these
  4.    letters
  5.    numbers
 Discuss Question
Answer: Option A. -> All of these

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