So you want to say that
to represent/find the negative of a number we need to find 2’s complement
to store a negative number in computer memory we use the rightmost bit as a flag.
so basically both are practically different and (1) is to represent/find for user/programmer (2) is for computer how it should be stored.
?
okay, i get it. MSB is 1 for negative numbers but the number is also the 2’s complement that is storedstored in memory.
@immanishbainsla
You are right. If you are still a bit confused , take a look at these numbers
| Decimal Value | Binary ( 2’s complement representation) | Two’s complement |
|---|---|---|
| 0 | 0000 0000 | 0000 0000 |
| 1 | 0000 0001 | 1111 1111 |
| 2 | 0000 0010 | 1111 1110 |
| 126 | 0111 1110 | 1000 0010 |
| 127 | 0111 1111 | 1000 0001 |
| −128 | 1000 0000 | 1000 0000 |
| −127 | 1000 0001 | 0111 1111 |
| −126 | 1000 0010 | 0111 1110 |
| −2 | 1111 1110 | 0000 0010 |
| −1 | 1111 1111 | 0000 0001 |
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