Introduction to Computers, the Internet and the Web


  Computers: Hardware and Software


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Computer and internet

1.  Computers: Hardware and Software

  • A computer is a device that can perform computations and make logical decisions billions of times faster than human beings can.
  • Many of today’s personal computers can perform several billion additions per second.
  • Today’s fastest supercomputers can perform thousands of trillions (quadrillions) of instructions per second!
  • To put that in perspective, a quadrillion-instruction-per-second computer can perform more than 100,000 calculations per second for every person on the planet!

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