How to convert the base ten signed integer number 750 069 to base two:
- 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.
To convert a base ten signed number (written as an integer in decimal system) to base two, written as a signed binary, follow the steps below.
- Divide the number repeatedly by 2: keep track of each remainder.
- Stop when you get a quotient that is equal to zero.
- Construct the base 2 representation of the positive number: take all the remainders starting from the bottom of the list constructed above.
- Determine the signed binary number bit length.
- Get the binary computer representation: if needed, add extra 0s in front (to the left) of the base 2 number, up to the required length and change the first bit (the leftmost), from 0 to 1, if the number is negative.
- Below you can see the conversion process to a signed binary and the related calculations.
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;
- 750 069 ÷ 2 = 375 034 + 1;
- 375 034 ÷ 2 = 187 517 + 0;
- 187 517 ÷ 2 = 93 758 + 1;
- 93 758 ÷ 2 = 46 879 + 0;
- 46 879 ÷ 2 = 23 439 + 1;
- 23 439 ÷ 2 = 11 719 + 1;
- 11 719 ÷ 2 = 5 859 + 1;
- 5 859 ÷ 2 = 2 929 + 1;
- 2 929 ÷ 2 = 1 464 + 1;
- 1 464 ÷ 2 = 732 + 0;
- 732 ÷ 2 = 366 + 0;
- 366 ÷ 2 = 183 + 0;
- 183 ÷ 2 = 91 + 1;
- 91 ÷ 2 = 45 + 1;
- 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.
750 069(10) = 1011 0111 0001 1111 0101(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 20.
- 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, 20,
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:
Number 750 069(10), a signed integer number (with sign),
converted from decimal system (from base 10)
and written as a signed binary (in base 2):
750 069(10) = 0000 0000 0000 1011 0111 0001 1111 0101
Spaces were used to group digits: for binary, by 4, for decimal, by 3.