Quiz Questions And Answers On Computer Arithmetic

1) The advantage of single bus over a multi bus is ?
  1. low cost
  2. flexibility in attaching peripheral devices
  3. high operating speed
  4. A and B
Show/Hide Answer
Answer = D 
Explanation: However single bus costs low and it is easy to attach peripheral devices in single bus but multibus  architecture have a great advantage in speed and of course, will affect performance also
2) In serial communication, an extra clock is needed ?
  1. to synchronize the devices
  2. for programmed baud rate control
  3. to make efficient use of RS-232
  4. None of above
Show/Hide Answer
Answer = B 
Explanation: No Explanation
3) In which of the following instruction bus idle situation occurs ?
  1. EI
  2. DAD rp
  3. INX H
  4. DAA
Show/Hide Answer
Answer = B 
Explanation: No Explanation
4) The addressing used in an instruction of the form ADD  X  Y is?
  1. absolute
  2. immediate
  3. indirect
  4. index
Show/Hide Answer
Answer = A 
Explanation: The effective address for an absolute instruction address is the address parameter itself with no modifications.
5) The speed imbalance between memory access and CPU operation can be reduced by ?
  1. cache memory
  2. memory interleaving
  3. reducing the size of memory
  4. A and B
Show/Hide Answer
Answer = D 
Explanation: No Explanation
6) Which of the following does not need extra hardware for DRAM refreshing ?
  1. 8085
  2. Motorola - 6800
  3. Z - 80
  4. None of these
Show/Hide Answer
Answer = C 
Explanation: No Explanation
7) The first operating system used in micro processor  is ?
  1. Zenix
  2. DOS
  3. CPIM
  4. Multics
Show/Hide Answer
Answer = C 
Explanation: No Explanation
8)  Instead of counting with binary number a ring counter uses words that have a single high..... ?
  1. bytes
  2. gate
  3. bit
  4. chip
Show/Hide Answer
Answer = C 
Explanation: No Explanation
9) The memory cell of a dynamic RAM is simpler and smaller that the memory cell of a ...... RAM ?
  1. volatile
  2. semiconductor
  3. static
  4. bipolar
  5. None of above
Show/Hide Answer
Answer =C
Explanation: No Explanation
10) A multiplexer with a 4 bit data select input is a  ?
  1.  4 : 1 multiplexer
  2. 16 : 1 multiplexer
  3.  2 : 1 multiplexer
  4.  8 : 1 multiplexer
Show/Hide Answer
Answer = D 
Explanation: No Explanation


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