Wednesday, March 30, 2016

Fact of the Day: Abacus

Long before calculators and even a written numerical system existed the abacus which helped very many ancient civilizations with calculations. Despite its ancient origins, it's still widely used by merchants in parts of Africa and Asia today. 

7 comments:

  1. Makes me think of slide rules too, as technology that has been surpassed by computers.

    ReplyDelete
  2. It is sad that kids don't even know what this is.

    ReplyDelete
  3. Useful still to this day, stands the test of time

    ReplyDelete
  4. I never learned how to use one, pre-calculator days.

    ReplyDelete
  5. they are so interesting...

    ReplyDelete