Binary Number System

• In binary number system we have two digits 0 and 1. 
• Computer stores all kinds of  data and information in terms of  binary numbers. It includes audio, video, text and numbers.

          

• The base of binary number system is  2.
• In this system each new column is two times the previous column value.

         For example, 

• Conversion of binary to decimal

      1.10101₂ =1×2⁴+0×2³+1×2²+0×2¹+1×2⁰ = 16+4+1= 21

      2.100011₂ = 1×2⁵+0×2⁴+0×2³+0×2²+1×2¹+1×2⁰=32+2+1= 35

• Conversion of decimal to binary number.       

• Conversion of binary to hexadecimal