How to convert a signed binary one's complement:
0000 0000 0000 0001 0101 0110 1010 0100(2)
to an integer in decimal system (in base 10)
1. Is this a positive or a negative number?
In a signed binary one's complement, first bit (the leftmost) indicates the sign,
1 = negative, 0 = positive.
0000 0000 0000 0001 0101 0110 1010 0100 is the binary representation of a positive integer, on 32 bits (4 Bytes).
2. Get the binary representation of the positive (unsigned) number:
* Run this step only if the number is negative *
Flip all the bits in the signed binary one's complement representation (reverse the digits) - replace the bits set on 1 with 0s and the bits on 0 with 1s:
* Not the case *
3. Map the unsigned binary number's digits versus the corresponding powers of 2 that their place value represent:
231
0 230
0 229
0 228
0 227
0 226
0 225
0 224
0 223
0 222
0 221
0 220
0 219
0 218
0 217
0 216
1 215
0 214
1 213
0 212
1 211
0 210
1 29
1 28
0 27
1 26
0 25
1 24
0 23
0 22
1 21
0 20
0
4. Multiply each bit by its corresponding power of 2 and add all the terms up:
0000 0000 0000 0001 0101 0110 1010 0100(2) =
(0 × 231 + 0 × 230 + 0 × 229 + 0 × 228 + 0 × 227 + 0 × 226 + 0 × 225 + 0 × 224 + 0 × 223 + 0 × 222 + 0 × 221 + 0 × 220 + 0 × 219 + 0 × 218 + 0 × 217 + 1 × 216 + 0 × 215 + 1 × 214 + 0 × 213 + 1 × 212 + 0 × 211 + 1 × 210 + 1 × 29 + 0 × 28 + 1 × 27 + 0 × 26 + 1 × 25 + 0 × 24 + 0 × 23 + 1 × 22 + 0 × 21 + 0 × 20)(10) =
(0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 65 536 + 0 + 16 384 + 0 + 4 096 + 0 + 1 024 + 512 + 0 + 128 + 0 + 32 + 0 + 0 + 4 + 0 + 0)(10) =
(65 536 + 16 384 + 4 096 + 1 024 + 512 + 128 + 32 + 4)(10) =
87 716(10)
5. If needed, adjust the sign of the integer number by the first digit (leftmost) of the signed binary:
0000 0000 0000 0001 0101 0110 1010 0100(2) = 87 716(10)
Conclusion:
Number 0000 0000 0000 0001 0101 0110 1010 0100(2) converted from signed binary one's complement representation to an integer in decimal system (in base 10):
0000 0000 0000 0001 0101 0110 1010 0100(2) = 87 716(10)
Spaces used to group digits: for binary, by 4; for decimal, by 3.
More operations of this kind:
Convert signed binary one's complement numbers to decimal system (base ten) integers
Entered binary number length must be: 2, 4, 8, 16, 32, or 64 - otherwise extra bits on 0 will be added in front (to the left).