Problem $2$:

Perform the following operations involving eight$-$bit $2\text{'}$s complement numbers and indicate

whether arithmetic overflow occurs. Check your answers by converting to decimal sign$-$

and$-$magnitude representation.Problem$3$:

Represent the following numbers in "revised simple model" and IEEE $754$ single precision.

a$)21\mathrm{.}25$

b$)-0\mathrm{.}1875$