Convert the fractional binary number 0.1011 into decimal fraction.
The number 0.1011 is converted into decimal number as
\begin{aligned} & 1 \times 2^{-1}+0 \times 2^{-2}+1 \times 2^{-3}+1 \times 2^{-4} \\ & =0.5+0+0.125+0.0625 \\ & =0.6875 \end{aligned}