Signed: Integer -> Binary: 1 010 010 054 Convert the Integer Number to a Signed Binary. Converting and Writing the Base Ten Decimal System Signed Integer as Binary Code (Written in Base Two)
Signed integer number 1 010 010 054(10)
converted and written as a signed binary (base 2) = ?
1. Divide the number repeatedly by 2:
Keep track of each remainder.
We stop when we get a quotient that is equal to zero.
- division = quotient + remainder;
- 1 010 010 054 ÷ 2 = 505 005 027 + 0;
- 505 005 027 ÷ 2 = 252 502 513 + 1;
- 252 502 513 ÷ 2 = 126 251 256 + 1;
- 126 251 256 ÷ 2 = 63 125 628 + 0;
- 63 125 628 ÷ 2 = 31 562 814 + 0;
- 31 562 814 ÷ 2 = 15 781 407 + 0;
- 15 781 407 ÷ 2 = 7 890 703 + 1;
- 7 890 703 ÷ 2 = 3 945 351 + 1;
- 3 945 351 ÷ 2 = 1 972 675 + 1;
- 1 972 675 ÷ 2 = 986 337 + 1;
- 986 337 ÷ 2 = 493 168 + 1;
- 493 168 ÷ 2 = 246 584 + 0;
- 246 584 ÷ 2 = 123 292 + 0;
- 123 292 ÷ 2 = 61 646 + 0;
- 61 646 ÷ 2 = 30 823 + 0;
- 30 823 ÷ 2 = 15 411 + 1;
- 15 411 ÷ 2 = 7 705 + 1;
- 7 705 ÷ 2 = 3 852 + 1;
- 3 852 ÷ 2 = 1 926 + 0;
- 1 926 ÷ 2 = 963 + 0;
- 963 ÷ 2 = 481 + 1;
- 481 ÷ 2 = 240 + 1;
- 240 ÷ 2 = 120 + 0;
- 120 ÷ 2 = 60 + 0;
- 60 ÷ 2 = 30 + 0;
- 30 ÷ 2 = 15 + 0;
- 15 ÷ 2 = 7 + 1;
- 7 ÷ 2 = 3 + 1;
- 3 ÷ 2 = 1 + 1;
- 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.
1 010 010 054(10) = 11 1100 0011 0011 1000 0111 1100 0110(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:
Number 1 010 010 054(10), a signed integer number (with sign),
converted from decimal system (from base 10)
and written as a signed binary (in base 2):
1 010 010 054(10) = 0011 1100 0011 0011 1000 0111 1100 0110
The first bit (the leftmost) is reserved for the sign:
0 = positive integer number, 1 = negative integer number
Spaces were used to group digits: for binary, by 4, for decimal, by 3.
Convert signed integer numbers from the decimal system (base ten) to signed binary (written in base two)
How to convert a base ten signed integer number to signed binary:
1) Divide the positive version of the number repeatedly by 2, keeping track of each remainder. Stop when getting a quotient that is 0.
2) Construct the base two representation by taking the previously calculated remainders starting from the last remainder up to the first one.
3) Construct the positive binary computer representation so that the first bit is 0.
4) Only if the initial number is negative, change the first bit (the leftmost), from 0 to 1. The leftmost bit is reserved for the sign, 1 = negative, 0 = positive.