What are the required steps to convert base 10 integer
number 3 037 000 567 to signed binary code (in base 2)?
- A signed integer, written in base ten, or a decimal system number, is a number written using the digits 0 through 9 and the sign, which can be positive (+) or negative (-). If positive, the sign is usually not written. A number written in base two, or binary, is a number written using only the digits 0 and 1.
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;
- 3 037 000 567 ÷ 2 = 1 518 500 283 + 1;
- 1 518 500 283 ÷ 2 = 759 250 141 + 1;
- 759 250 141 ÷ 2 = 379 625 070 + 1;
- 379 625 070 ÷ 2 = 189 812 535 + 0;
- 189 812 535 ÷ 2 = 94 906 267 + 1;
- 94 906 267 ÷ 2 = 47 453 133 + 1;
- 47 453 133 ÷ 2 = 23 726 566 + 1;
- 23 726 566 ÷ 2 = 11 863 283 + 0;
- 11 863 283 ÷ 2 = 5 931 641 + 1;
- 5 931 641 ÷ 2 = 2 965 820 + 1;
- 2 965 820 ÷ 2 = 1 482 910 + 0;
- 1 482 910 ÷ 2 = 741 455 + 0;
- 741 455 ÷ 2 = 370 727 + 1;
- 370 727 ÷ 2 = 185 363 + 1;
- 185 363 ÷ 2 = 92 681 + 1;
- 92 681 ÷ 2 = 46 340 + 1;
- 46 340 ÷ 2 = 23 170 + 0;
- 23 170 ÷ 2 = 11 585 + 0;
- 11 585 ÷ 2 = 5 792 + 1;
- 5 792 ÷ 2 = 2 896 + 0;
- 2 896 ÷ 2 = 1 448 + 0;
- 1 448 ÷ 2 = 724 + 0;
- 724 ÷ 2 = 362 + 0;
- 362 ÷ 2 = 181 + 0;
- 181 ÷ 2 = 90 + 1;
- 90 ÷ 2 = 45 + 0;
- 45 ÷ 2 = 22 + 1;
- 22 ÷ 2 = 11 + 0;
- 11 ÷ 2 = 5 + 1;
- 5 ÷ 2 = 2 + 1;
- 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.
3 037 000 567(10) = 1011 0101 0000 0100 1111 0011 0111 0111(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 32.
- 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) is reserved for 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, 32,
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:
3 037 000 567(10) Base 10 integer number converted and written as a signed binary code (in base 2):
3 037 000 567(10) = 0000 0000 0000 0000 0000 0000 0000 0000 1011 0101 0000 0100 1111 0011 0111 0111
Spaces were used to group digits: for binary, by 4, for decimal, by 3.