Questions

$(1){78\mathrm{.}625}_{10}=1*1_2=1,$

$(2)$ Write $8-$bit signed magnitude, $2\text{'}$s complement, and $1\text{'}$s complement for $+{78\mathrm{.}625}_{10}$ and $-{78\mathrm{.}625}_{10}$

$(3)$ Find the decimal of $2\text{'}$s complement ${10111001\mathrm{.}11}_2$ and ${00111001}_2(8-$bit$)$

$(4)$ BCD addition: $(1000{)}_{BCD}+(0111{)}_{BCD}$

$(5)$Different number system Conversion: $(18{)}_9=({)}_5$