Number History

A Network Engineer must know 3 Numbering System:

• Decimal (Base 10) (0-9)

• Binary (Base 2) (0-1)

• Hexadecimal (Base 16) (0-15, A-F)

• In the olden days, people discovered that counting on sticks would not be efficient hence they invented the Base 10 method (counting on fingers) as humans have only 10 fingers.

• This method led to the invention of the Number system 0-9.

• The calculation would look like this…

  Decimal Number
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9

• This even led to the invention of the power (or exponent) in the calculation.

• As it is in ones place value hence there can be no other combination. Hence they added another digit (the tens-place value column to increase the number & the combination).

Reference:

• https://www.khanacademy.org/math/algebra-home/alg-intro-to-algebra/algebra-alternate-number-bases/v/number-systems-introduction

• https://www.udemy.com/course/cisco-ccent-icnd1-100-105-complete-course-sims-and-gns3/learn/lecture/18891518#overview