what is abacus? and why ?

It is difficult to imagine counting without numbers.But there was a time when no number did not exist.

The first counting device was HUMAN HAND and its Fingers



when the number which is more than ten..they  used PEBBLES AND TWIGS





After that to count and calculating of goods, they invented ABACUS…Its a counting tool







One Comment

Leave a Reply

Your email address will not be published. Required fields are marked *

  • 4/5 (1)
  • adsense