What are the required steps to convert base 10 integer
number 607 500 583 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;
- 607 500 583 ÷ 2 = 303 750 291 + 1;
- 303 750 291 ÷ 2 = 151 875 145 + 1;
- 151 875 145 ÷ 2 = 75 937 572 + 1;
- 75 937 572 ÷ 2 = 37 968 786 + 0;
- 37 968 786 ÷ 2 = 18 984 393 + 0;
- 18 984 393 ÷ 2 = 9 492 196 + 1;
- 9 492 196 ÷ 2 = 4 746 098 + 0;
- 4 746 098 ÷ 2 = 2 373 049 + 0;
- 2 373 049 ÷ 2 = 1 186 524 + 1;
- 1 186 524 ÷ 2 = 593 262 + 0;
- 593 262 ÷ 2 = 296 631 + 0;
- 296 631 ÷ 2 = 148 315 + 1;
- 148 315 ÷ 2 = 74 157 + 1;
- 74 157 ÷ 2 = 37 078 + 1;
- 37 078 ÷ 2 = 18 539 + 0;
- 18 539 ÷ 2 = 9 269 + 1;
- 9 269 ÷ 2 = 4 634 + 1;
- 4 634 ÷ 2 = 2 317 + 0;
- 2 317 ÷ 2 = 1 158 + 1;
- 1 158 ÷ 2 = 579 + 0;
- 579 ÷ 2 = 289 + 1;
- 289 ÷ 2 = 144 + 1;
- 144 ÷ 2 = 72 + 0;
- 72 ÷ 2 = 36 + 0;
- 36 ÷ 2 = 18 + 0;
- 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.
607 500 583(10) = 10 0100 0011 0101 1011 1001 0010 0111(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:
607 500 583(10) Base 10 integer number converted and written as a signed binary code (in base 2):
607 500 583(10) = 0010 0100 0011 0101 1011 1001 0010 0111
Spaces were used to group digits: for binary, by 4, for decimal, by 3.