1. Divide the number repeatedly by 2:
Keep track of each remainder.
We stop when we get a quotient that is equal to zero.
- division = quotient + remainder;
- 4 053 498 ÷ 2 = 2 026 749 + 0;
- 2 026 749 ÷ 2 = 1 013 374 + 1;
- 1 013 374 ÷ 2 = 506 687 + 0;
- 506 687 ÷ 2 = 253 343 + 1;
- 253 343 ÷ 2 = 126 671 + 1;
- 126 671 ÷ 2 = 63 335 + 1;
- 63 335 ÷ 2 = 31 667 + 1;
- 31 667 ÷ 2 = 15 833 + 1;
- 15 833 ÷ 2 = 7 916 + 1;
- 7 916 ÷ 2 = 3 958 + 0;
- 3 958 ÷ 2 = 1 979 + 0;
- 1 979 ÷ 2 = 989 + 1;
- 989 ÷ 2 = 494 + 1;
- 494 ÷ 2 = 247 + 0;
- 247 ÷ 2 = 123 + 1;
- 123 ÷ 2 = 61 + 1;
- 61 ÷ 2 = 30 + 1;
- 30 ÷ 2 = 15 + 0;
- 15 ÷ 2 = 7 + 1;
- 7 ÷ 2 = 3 + 1;
- 3 ÷ 2 = 1 + 1;
- 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.
4 053 498(10) = 11 1101 1101 1001 1111 1010(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 22.
- 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, 22,
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 4 053 498(10) converted to signed binary in two's complement representation:
Spaces were used to group digits: for binary, by 4, for decimal, by 3.