Comparison Table
The following table shows the positive and negative integers that can be represented using 4 bits.
| Decimal | Unsigned | Sign and magnitude | Ones' complement | Two's complement | Excess-7 (biased) | Base −2 |
|---|---|---|---|---|---|---|
| +16 | ||||||
| +15 | 1111 | |||||
| +14 | 1110 | |||||
| +13 | 1101 | |||||
| +12 | 1100 | |||||
| +11 | 1011 | |||||
| +10 | 1010 | |||||
| +9 | 1001 | |||||
| +8 | 1000 | 1111 | ||||
| +7 | 0111 | 0111 | 0111 | 0111 | 1110 | |
| +6 | 0110 | 0110 | 0110 | 0110 | 1101 | |
| +5 | 0101 | 0101 | 0101 | 0101 | 1100 | 0101 |
| +4 | 0100 | 0100 | 0100 | 0100 | 1011 | 0100 |
| +3 | 0011 | 0011 | 0011 | 0011 | 1010 | 0111 |
| +2 | 0010 | 0010 | 0010 | 0010 | 1001 | 0110 |
| +1 | 0001 | 0001 | 0001 | 0001 | 1000 | 0001 |
| +0 | 0000 | 0000 | 0000 | 0000 | 0111 | 0000 |
| −0 | 1000 | 1111 | ||||
| −1 | 1001 | 1110 | 1111 | 0110 | 0011 | |
| −2 | 1010 | 1101 | 1110 | 0101 | 0010 | |
| −3 | 1011 | 1100 | 1101 | 0100 | 1101 | |
| −4 | 1100 | 1011 | 1100 | 0011 | 1100 | |
| −5 | 1101 | 1010 | 1011 | 0010 | 1111 | |
| −6 | 1110 | 1001 | 1010 | 0001 | 1110 | |
| −7 | 1111 | 1000 | 1001 | 0000 | 1001 | |
| −8 | 1000 | 1000 | ||||
| −9 | 1011 | |||||
| −10 | 1010 | |||||
| −11 |
Read more about this topic: Signed Number Representations
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