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MCQs

Total Questions : 457 | Page 38 of 46 pages
Question 371. The ASCII code is a 7-bit code for
  1.    letters
  2.    numbers
  3.    other symbols
  4.    All of the above
  5.    None of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 372. 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 373. The memory cell of a dynamic RAM is simpler and smaller than the memory cell of a _____ RAM.
  1.    volatile
  2.    static
  3.    semiconductor
  4.    bipolar
  5.    None of the above
 Discuss Question
Answer: Option B. -> static
Question 374. What is the 1's complement of 0000 1111 0010 1101 number?
  1.    1111 0000 0010 1101
  2.    1111 0000 1101 0010
  3.    1111 1100 1010 1100
  4.    1001 0010 1010 1100
  5.    None of the above
 Discuss Question
Answer: Option B. -> 1111 0000 1101 0010
Question 375. A byte is consist of _____ bits
  1.    two
  2.    four
  3.    eight
  4.    ten
  5.    None of the above
 Discuss Question
Answer: Option C. -> eight
Question 376. A NAND gate is equivalent to an AND gate followed by an inverter. All inputs must be _____ to get a low output
  1.    low
  2.    high
  3.    some low and some high
  4.    0's
  5.    None of the above
 Discuss Question
Answer: Option B. -> high
Question 377. Addition of 11012 and 10102 is
  1.    101012
  2.    110002
  3.    110112
  4.    101112
  5.    None of the above
 Discuss Question
Answer: Option D. -> 101112
Question 378. A p- channel enhancement type MOSFET performs much the same function as a PNP transistor, except that
  1.    it operates much faster
  2.    it is considerably larger
  3.    it is controlled by voltage rather than by current, so that it requires very little current at the control terminal
  4.    it is controlled by current rather than by voltage like a bipolar transistor.
  5.    None of the above
 Discuss Question
Answer: Option C. -> it is controlled by voltage rather than by current, so that it requires very little current at the control terminal
Question 379. De Morgan's second therm says that NAND gate is equivalent to a bubbled _____ gate.
  1.    AND
  2.    XAND
  3.    XOR
  4.    OR
  5.    None of the above
 Discuss Question
Answer: Option D. -> OR
Question 380. When a transistor is cut off or saturated, transistor _____ have almost no effect
  1.    wave
  2.    variations
  3.    stage
  4.    circuits
  5.    None of the above
 Discuss Question
Answer: Option B. -> variations

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