1. Divide the number repeatedly by 2:
Keep track of each remainder.
Stop when you get a quotient that is equal to zero.
- division = quotient + remainder;
- 314 372 ÷ 2 = 157 186 + 0;
- 157 186 ÷ 2 = 78 593 + 0;
- 78 593 ÷ 2 = 39 296 + 1;
- 39 296 ÷ 2 = 19 648 + 0;
- 19 648 ÷ 2 = 9 824 + 0;
- 9 824 ÷ 2 = 4 912 + 0;
- 4 912 ÷ 2 = 2 456 + 0;
- 2 456 ÷ 2 = 1 228 + 0;
- 1 228 ÷ 2 = 614 + 0;
- 614 ÷ 2 = 307 + 0;
- 307 ÷ 2 = 153 + 1;
- 153 ÷ 2 = 76 + 1;
- 76 ÷ 2 = 38 + 0;
- 38 ÷ 2 = 19 + 0;
- 19 ÷ 2 = 9 + 1;
- 9 ÷ 2 = 4 + 1;
- 4 ÷ 2 = 2 + 0;
- 2 ÷ 2 = 1 + 0;
- 1 ÷ 2 = 0 + 1;
2. Construct the base 2 representation of the positive number:
Take all the remainders starting from the bottom of the list constructed above.
314 372(10) = 100 1100 1100 0000 0100(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 19.
- A signed binary's bit length must be equal to a power of 2, as of:
- 21 = 2; 22 = 4; 23 = 8; 24 = 16; 25 = 32; 26 = 64; ...
- The first bit (the leftmost) indicates the sign:
- 0 = positive integer number, 1 = negative integer number
The least number that is:
1) a power of 2
2) and is larger than the actual length, 19,
3) so that the first bit (leftmost) could be zero
(we deal with a positive number at this moment)
=== is: 32.
4. Get the positive binary computer representation on 32 bits (4 Bytes):
If needed, add extra 0s in front (to the left) of the base 2 number, up to the required length, 32.
Decimal Number 314 372(10) converted to signed binary in one's complement representation: