What are the required steps to convert base 10 integer
number 735 747 410 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;
- 735 747 410 ÷ 2 = 367 873 705 + 0;
- 367 873 705 ÷ 2 = 183 936 852 + 1;
- 183 936 852 ÷ 2 = 91 968 426 + 0;
- 91 968 426 ÷ 2 = 45 984 213 + 0;
- 45 984 213 ÷ 2 = 22 992 106 + 1;
- 22 992 106 ÷ 2 = 11 496 053 + 0;
- 11 496 053 ÷ 2 = 5 748 026 + 1;
- 5 748 026 ÷ 2 = 2 874 013 + 0;
- 2 874 013 ÷ 2 = 1 437 006 + 1;
- 1 437 006 ÷ 2 = 718 503 + 0;
- 718 503 ÷ 2 = 359 251 + 1;
- 359 251 ÷ 2 = 179 625 + 1;
- 179 625 ÷ 2 = 89 812 + 1;
- 89 812 ÷ 2 = 44 906 + 0;
- 44 906 ÷ 2 = 22 453 + 0;
- 22 453 ÷ 2 = 11 226 + 1;
- 11 226 ÷ 2 = 5 613 + 0;
- 5 613 ÷ 2 = 2 806 + 1;
- 2 806 ÷ 2 = 1 403 + 0;
- 1 403 ÷ 2 = 701 + 1;
- 701 ÷ 2 = 350 + 1;
- 350 ÷ 2 = 175 + 0;
- 175 ÷ 2 = 87 + 1;
- 87 ÷ 2 = 43 + 1;
- 43 ÷ 2 = 21 + 1;
- 21 ÷ 2 = 10 + 1;
- 10 ÷ 2 = 5 + 0;
- 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.
735 747 410(10) = 10 1011 1101 1010 1001 1101 0101 0010(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 30.
- 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, 30,
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:
735 747 410(10) Base 10 integer number converted and written as a signed binary code (in base 2):
735 747 410(10) = 0010 1011 1101 1010 1001 1101 0101 0010
Spaces were used to group digits: for binary, by 4, for decimal, by 3.