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Home Electronics and Communication Engineering Microprocessors Comments

  • Question
  • The power requirements of a DRAM in active and stand by modes is about


  • Options
  • A. 350 mW and 5 mW respectively
  • B. 350 mW each
  • C. 5 mW each
  • D. 350 mW and 100 mW respectively

  • Correct Answer
  • 350 mW and 5 mW respectively 

    Explanation
    Power requirement in stand by mode is very low 1000.

    Microprocessors problems


    Search Results


    • 1. Most of the memory chips in static RAM

    • Options
    • A. do not require any supply
    • B. need 2 V supply
    • C. need 5 V supply
    • D. need 12 V supply
    • Discuss
    • 2. Consider the following

      1. The first letter of a Java variable is lower case.
      2. Each successive word in Java variable begins with a capital letter.
      3. All other letters are lower case.
      4. A Java variable can have a digit as first character.
      Which of the above are correct?

    • Options
    • A. All
    • B. 1, 2, 3 only
    • C. 1, 2, 4 only
    • D. 2, 3, 4 only
    • Discuss
    • 3. Which of the following DO statements is invalid in FORTRAN 77?

    • Options
    • A. DO 161 = 1, 15
    • B. DO 16 1 = 1, 10, 1
    • C. DO 16 I = - 5, 5, 2
    • D. none of the above
    • Discuss
    • 4. In a microprocessor

    • Options
    • A. all instructions need only one machine cycle
    • B. some instructions need only one machine cycle while some other instructions need more than one machine cycle
    • C. all instructions need only fraction of one machine cycle
    • D. some instructions need less than one machine cycle
    • Discuss
    • 5. To evaluate X = (A + B + 1.2) * (A + B - C) the sequence of operation is

    • Options
    • A. + + + - * =
    • B. * + + + - =
    • C. + + - * + =
    • D. - + + + * =
    • Discuss
    • 6. 8085 has 6 sign flags.

    • Options
    • A. True
    • B. False
    • Discuss
    • 7. The interface chip for 8086 and 16 bit ADC is

    • Options
    • A. 8259
    • B. 8255
    • C. 8253
    • D. 8251
    • Discuss
    • 8. Which is not a valid Java variable

    • Options
    • A. lot
    • B. c 1t
    • C. s $ 2
    • D. 2 s $
    • Discuss
    • 9. Match the following:

      List I (Logic family) List II (Characteristic of logic family)
      A. TTL 1. Maximum power Consumption
      B. ECL 2. Highest Packing Density
      C. NMOS 3. Least Power Consumption
      D. CMOS 4. Saturated Logic


    • Options
    • A. A-1, B-4, C-2, D-3
    • B. A-1, B-4, C-3, D-2
    • C. A-4, B-1, C-2, D-3
    • D. A-4, B-1, C-3, D-2
    • Discuss
    • 10. Match the following:

      List I f(t) List II F(s)
      A. t 1.
      B. eat 2.
      C. u(t) 3.
      D. cos ?t 4.


    • Options
    • A. A-1, B-3, C-2, D-4
    • B. A-1, B-4, C-2, D-3
    • C. A-2, B-4, C-1, D-3
    • D. A-4, B-3, C-1, D-2
    • Discuss


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