<Tr> <Td> </Td> <Td> This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations . Please help to improve this article by introducing more precise citations . (January 2014) (Learn how and when to remove this template message) </Td> </Tr> <Table> 8 - bit ones' - complement integers <Tr> <Th> Bits </Th> <Th> Unsigned value </Th> <Th> Ones' complement value </Th> </Tr> <Tr> <Td> 0111 1111 </Td> <Td> 127 </Td> <Td> 127 </Td> </Tr> <Tr> <Td> 0111 1110 </Td> <Td> 126 </Td> <Td> 126 </Td> </Tr> <Tr> <Td> 0000 0010 </Td> <Td> 2 </Td> <Td> 2 </Td> </Tr> <Tr> <Td> 0000 0001 </Td> <Td> 1 </Td> <Td> 1 </Td> </Tr> <Tr> <Td> 0000 0000 </Td> <Td> 0 </Td> <Td> 0 </Td> </Tr> <Tr> <Td> 1111 1111 </Td> <Td> 255 </Td> <Td> − 0 </Td> </Tr> <Tr> <Td> 1111 1110 </Td> <Td> 254 </Td> <Td> − 1 </Td> </Tr> <Tr> <Td> 1111 1101 </Td> <Td> 253 </Td> <Td> − 2 </Td> </Tr> <Tr> <Td> 1000 0001 </Td> <Td> 129 </Td> <Td> − 126 </Td> </Tr> <Tr> <Td> 1000 0000 </Td> <Td> 128 </Td> <Td> − 127 </Td> </Tr> </Table> <Tr> <Th> Bits </Th> <Th> Unsigned value </Th> <Th> Ones' complement value </Th> </Tr> <Tr> <Td> 0111 1111 </Td> <Td> 127 </Td> <Td> 127 </Td> </Tr>

What is the use of 1's and 2's complement