71. In how many different modes can intel 8254 operate?
    

1. 1. 2

   
   
   

   2. 4

   
   
   

   3. 6

   
   
   

   4. 8

   
   
   

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   6

   Correct Option: C

   6

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72. How many identical 16-bit counters can operate independently on 8254?

1. 1. 1

   
   
   

   2. 2

   
   
   

   3. 3

   
   
   

   4. 4

   
   
   

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   NA

   Correct Option: C

   NA

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73. Which of the following uses can intel 8254 be implemented to?

1. 1. An event counter

   
   
   

   2. Rise-time clock

   
   
   

   3. A square wave generator

   
   
   

   4. All of the above

   
   
   

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   NA

   Correct Option: D

   NA

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74. How many pins are there in Intel 8254, programmable interval timer?

1. 1. 24

   
   
   

   2. 20

   
   
   

   3. 40

   
   
   

   4. 36

   
   
   

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   24

   Correct Option: A

   24

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75. What is the IC no. for the programmable interval timer?

1. 1. 8279

   
   
   

   2. 8255

   
   
   

   3. 8155

   
   
   

   4. 8254

   
   
   

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   8254

   Correct Option: D

   8254

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