- Division method is used to convert only integer part of a decimal number to its equivalent in binary number system.
- In this method the integer part of the decimal number is continuously divided until we reach a stage where the quotient becomes zero.
- The reminder that we obtain at each division iteration becomes the value of the weights or the digits in the binary number system.
- The reminders that we obtain are taken from the last step to first step i.e. the last reminder obtained during the division iteration is the most significant digit (MSD) and the first reminder the we obtained is the least significant digit in the binary number system.
- You will understand the procedure better with the following illustrative example.
Ex1: Convert (32)10 decimal number to binary number (?)2 using division method
1st Division Iteration
Divide 32 by 2
32 ÷ 2 = 16(Quotient) Reminder:02nd Division Iteration
Divide 16 by 2
16 ÷ 2 = 8(Quotient) Reminder=0
3rd Division Iteration
Divide 8 by 2
8 ÷ 2 = 4(Quotient) Reminder=0
4th Division Iteration
Divide 4 by 2
4 ÷ 2 = 2(Quotient) Reminder=0Remainder from the last division iteration becomes MSD and reminder from 1st iteration becomes LSD.
5th Division Iteration
Divide 2 by 22 ÷ 2 = 1(Quotient) Reminder=0
6th Division Iteration
Divide 1 by 21 ÷ 2 = 0(Quotient) Reminder=1
Hence, the binary equivalent of the decimal number 32 is (100000).