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

Do You Like This? Please take 5 seconds to share with your firends.