What decimal value does $1011$ represent? Give the answer for each of the following representation

systems. Assume each system uses $4$ bits.

your answer

unsigned binary

one's complement

two's complement

sign and magnitude

Represent the decimal value $-4$ in each of the following systems. Assume $4$ bits. Answers using

fewer or more than $4$ bits will not be considered correct. If it's not possible to represent $-4$ in a

given system, write NR $($for Not Representable$).$

your answer

unsigned binary

one's complement

two's complement

$,$ sign and magnitude