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Digital Computer Electronics (Computer Science) Question and Answers-Page first

Digital Computer Electronics problems


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  • 1. Conversion of decimal number 1310 to it's octal number equivalent is

  • Options
  • A. 158
  • B. 178
  • C. 138
  • D. 118
  • E. None of the above

  •           Discuss     

  • 2. With an RS latch a high S and low R sets the output to _____ ; a low S and a high R _____ the output to low.

  • Options
  • A. No change, set
  • B. Race, high
  • C. high, reset
  • D. set, reset
  • E. None of the above

  •           Discuss     

  • 3. Conversion of decimal number 6110 to it's binary number equivalent is

  • Options
  • A. 1100112
  • B. 110011102
  • C. 1111012
  • D. 111112
  • E. None of the above

  •           Discuss     

  • 4. De Morgan's second therm says that NAND gate is equivalent to a bubbled _____ gate.

  • Options
  • A. AND
  • B. XAND
  • C. XOR
  • D. OR
  • E. None of the above

  •           Discuss     

  • 5. How many bits are required to encode all twenty six letters ten symbols, and ten numerals?

  • Options
  • A. 5
  • B. 6
  • C. 2
  • D. 3
  • E. None of the above

  •           Discuss     

  • 6. An inverter is also called a _____ gate.

  • Options
  • A. NOT
  • B. OR
  • C. AND
  • D. NAND
  • E. None of the above

  •           Discuss     

  • 7. The ASCII

  • Options
  • A. is a subset of 8-bit EBCDIC
  • B. is used only in Western Countries
  • C. is version II of the ASC Standard
  • D. has 128 characters, including 32 control characters
  • E. None of the above

  •           Discuss     

  • 8. Flip-flop outputs are always

  • Options
  • A. complimentary
  • B. the same
  • C. independent of each other
  • D. same as inputs
  • E. None of the above

  •           Discuss     

  • 9. Conversion of binary number 10010012 to hexadecimal is

  • Options
  • A. 4016
  • B. 3916
  • C. 4916
  • D. 4216
  • E. None of the above

  •           Discuss     

  • 10. A p- channel enhancement type MOSFET performs much the same function as a PNP transistor, except that

  • Options
  • A. it operates much faster
  • B. it is considerably larger
  • C. it is controlled by voltage rather than by current, so that it requires very little current at the control terminal
  • D. it is controlled by current rather than by voltage like a bipolar transistor.
  • E. None of the above

  •           Discuss     


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