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;
- 4 576 411 ÷ 2 = 2 288 205 + 1;
- 2 288 205 ÷ 2 = 1 144 102 + 1;
- 1 144 102 ÷ 2 = 572 051 + 0;
- 572 051 ÷ 2 = 286 025 + 1;
- 286 025 ÷ 2 = 143 012 + 1;
- 143 012 ÷ 2 = 71 506 + 0;
- 71 506 ÷ 2 = 35 753 + 0;
- 35 753 ÷ 2 = 17 876 + 1;
- 17 876 ÷ 2 = 8 938 + 0;
- 8 938 ÷ 2 = 4 469 + 0;
- 4 469 ÷ 2 = 2 234 + 1;
- 2 234 ÷ 2 = 1 117 + 0;
- 1 117 ÷ 2 = 558 + 1;
- 558 ÷ 2 = 279 + 0;
- 279 ÷ 2 = 139 + 1;
- 139 ÷ 2 = 69 + 1;
- 69 ÷ 2 = 34 + 1;
- 34 ÷ 2 = 17 + 0;
- 17 ÷ 2 = 8 + 1;
- 8 ÷ 2 = 4 + 0;
- 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.
4 576 411(10) = 100 0101 1101 0100 1001 1011(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 23.
- 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, 23,
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 4 576 411(10) converted to signed binary in one's complement representation: