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MCQs

Total Questions : 457 | Page 22 of 46 pages
Question 211. A NOR gate has two or more input signals. All input must be _____ to get a high output
  1.    low
  2.    high
  3.    some low some high
  4.    1's
  5.    None of the above
 Discuss Question
Answer: Option A. -> low
Question 212. If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?
  1.    0000, EEEE
  2.    0, 64
  3.    0000, FFFF
  4.    0000, 9999
  5.    None of the above
 Discuss Question
Answer: Option C. -> 0000, FFFF
Question 213. 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.    4,095, 4K
  2.    16,384, 16K
  3.    32,740, 32K
  4.    46,040, 46K
  5.    None of the above
 Discuss Question
Answer: Option B. -> 16,384, 16K
Question 214. The m-bit parallel adder consists of:
  1.    (m+1) full adders
  2.    m/2 full adders
  3.    m-1 full adders
  4.    m full adders
  5.    None of the above
 Discuss Question
Answer: Option D. -> m full adders
Question 215. An OR gate has 6 inputs. How many input words are in its truth table?
  1.    64
  2.    32
  3.    16
  4.    128
  5.    None of the above
 Discuss Question
Answer: Option A. -> 64
Question 216. Which TTL sub-family has maximum speed?
  1.    standard TTL
  2.    schottky-clamped TTL
  3.    high speed TTL
  4.    low power TTL
  5.    None of the above
 Discuss Question
Answer: Option B. -> schottky-clamped TTL
Question 217. Conversion of binary number 1100012 to its decimal number is
  1.    2710
  2.    4910
  3.    3910
  4.    5010
  5.    None of the above
 Discuss Question
Answer: Option B. -> 4910
Question 218. The OR gate has two or more input signals. If any input is _____ the output is high.
  1.    low
  2.    high
  3.    0
  4.    All of the above
  5.    None of the above
 Discuss Question
Answer: Option B. -> high
Question 219. How many memory locations can 14 address bits access?
  1.    16,384
  2.    8,192
  3.    4096
  4.    14
  5.    None of the above
 Discuss Question
Answer: Option A. -> 16,384
Question 220. The EXCLUSIVE - NOR gate is equivalent to an _____ gate followed by an invertor.
  1.    OR
  2.    AND
  3.    NAND
  4.    XOR
  5.    None of the above
 Discuss Question
Answer: Option D. -> XOR

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