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;
- 3 600 611 ÷ 2 = 1 800 305 + 1;
- 1 800 305 ÷ 2 = 900 152 + 1;
- 900 152 ÷ 2 = 450 076 + 0;
- 450 076 ÷ 2 = 225 038 + 0;
- 225 038 ÷ 2 = 112 519 + 0;
- 112 519 ÷ 2 = 56 259 + 1;
- 56 259 ÷ 2 = 28 129 + 1;
- 28 129 ÷ 2 = 14 064 + 1;
- 14 064 ÷ 2 = 7 032 + 0;
- 7 032 ÷ 2 = 3 516 + 0;
- 3 516 ÷ 2 = 1 758 + 0;
- 1 758 ÷ 2 = 879 + 0;
- 879 ÷ 2 = 439 + 1;
- 439 ÷ 2 = 219 + 1;
- 219 ÷ 2 = 109 + 1;
- 109 ÷ 2 = 54 + 1;
- 54 ÷ 2 = 27 + 0;
- 27 ÷ 2 = 13 + 1;
- 13 ÷ 2 = 6 + 1;
- 6 ÷ 2 = 3 + 0;
- 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.
3 600 611(10) = 11 0110 1111 0000 1110 0011(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 3 600 611(10) converted to signed binary in two's complement representation:
Spaces were used to group digits: for binary, by 4, for decimal, by 3.