51. Abacus can perform

1. 1. addition

   
   
   

   2. subtraction

   
   
   

   3. multiplication

   
   
   

   4. Both '1' and '2'

   
   
   

   5. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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52. Computer built before the first generation computer was

1. 1. mechanical

   
   
   

   2. electromechanical

   
   
   

   3. electrical

   
   
   

   4. electronics

   
   
   

   5. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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53. The earliest calculating device is

1. 1. calculator

   
   
   

   2. abacus

   
   
   

   3. difference engine

   
   
   

   4. analytical engine

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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54. First generation computers were based on

1. 1. transistors

   
   
   

   2. conductors

   
   
   

   3. ICs

   
   
   

   4. vacuum tubes

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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55. Computer size was very large in

1. 1. first generation

   
   
   

   2. second generation

   
   
   

   3. third generation

   
   
   

   4. fourth generation

   
   
   

   5. fifth generation

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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