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;
- 10 011 000 273 ÷ 2 = 5 005 500 136 + 1;
- 5 005 500 136 ÷ 2 = 2 502 750 068 + 0;
- 2 502 750 068 ÷ 2 = 1 251 375 034 + 0;
- 1 251 375 034 ÷ 2 = 625 687 517 + 0;
- 625 687 517 ÷ 2 = 312 843 758 + 1;
- 312 843 758 ÷ 2 = 156 421 879 + 0;
- 156 421 879 ÷ 2 = 78 210 939 + 1;
- 78 210 939 ÷ 2 = 39 105 469 + 1;
- 39 105 469 ÷ 2 = 19 552 734 + 1;
- 19 552 734 ÷ 2 = 9 776 367 + 0;
- 9 776 367 ÷ 2 = 4 888 183 + 1;
- 4 888 183 ÷ 2 = 2 444 091 + 1;
- 2 444 091 ÷ 2 = 1 222 045 + 1;
- 1 222 045 ÷ 2 = 611 022 + 1;
- 611 022 ÷ 2 = 305 511 + 0;
- 305 511 ÷ 2 = 152 755 + 1;
- 152 755 ÷ 2 = 76 377 + 1;
- 76 377 ÷ 2 = 38 188 + 1;
- 38 188 ÷ 2 = 19 094 + 0;
- 19 094 ÷ 2 = 9 547 + 0;
- 9 547 ÷ 2 = 4 773 + 1;
- 4 773 ÷ 2 = 2 386 + 1;
- 2 386 ÷ 2 = 1 193 + 0;
- 1 193 ÷ 2 = 596 + 1;
- 596 ÷ 2 = 298 + 0;
- 298 ÷ 2 = 149 + 0;
- 149 ÷ 2 = 74 + 1;
- 74 ÷ 2 = 37 + 0;
- 37 ÷ 2 = 18 + 1;
- 18 ÷ 2 = 9 + 0;
- 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.
10 011 000 273(10) = 10 0101 0100 1011 0011 1011 1101 1101 0001(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 34.
- 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, 34,
3) so that the first bit (leftmost) could be zero
(we deal with a positive number at this moment)
=== is: 64.
4. Get the positive binary computer representation on 64 bits (8 Bytes):
If needed, add extra 0s in front (to the left) of the base 2 number, up to the required length, 64.
Decimal Number 10 011 000 273(10) converted to signed binary in one's complement representation: