What is a computer? 

Computer is an electronic device that takes input, processes input and produces output and saves output. 

Functions of a computer:

  • Input
  • Processing
  • Output
  • Storage
Types of computer:
  • Analogue computer: Process analogue data. Ex: Speedometer, Mercury Thermometer.
  • Digital computer: Process arithmetic and logical operation. Ex: Laptop, Desktop etc.
  • Hybrid computer: Both analogue and digital computer. Ex: Computer for fuel pump that measures fuel in liter and  calculate price too.   

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