46. A microprocessor is called an n-bit microprocessor depending on

1. 1. register’s length

   
   
   

   2. size of internal data bus

   
   
   

   3. size of external data bus

   
   
   

   4. none of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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47. Two operands can be checked for equality using

1. 1. OR-operation

   
   
   

   2. AND-operation

   
   
   

   3. X-OR operation

   
   
   

   4. none of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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48. Setting contents of a register to zero can be efficiently done by

1. 1. Movimmediate instruct ion using zero as immediate data

   
   
   

   2. AND immediate instruction using zero as immediate data

   
   
   

   3. XORing register with itself

   
   
   

   4. none of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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49. In a 8-bit microcomputer having 8K bytes of RAM memory, the length of SP will be_______
    

1. 1. 12

   
   
   

   2. 11

   
   
   

   3. 10

   
   
   

   4. 13

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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50. The data bus in 8080A/8085 microprocessor is a group of

1. 1. eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory

   
   
   

   2. eight lines used to transfer data among the registers

   
   
   

   3. eight unidirectional lines that are used for I/O devices

   
   
   

   4. sixteen bidirectional lines that are used for data transfer between the microprocessor and memory

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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