$v_o=V_R[d_12^{-1}+ d_22^{-2}+ ....+ d_n2^{-n}]$

Here n=8 and $vR=10$

To calculate the value of LSB:

$d_1 d_2 ....d_8$= 00000001

$v_{0}=10 [0+0+0+0+0+0+0++1\times2^{-8}$]

$V_{0}=\frac{10}{2^{8}}$=39.06mv

The value of LSB is 39.06

To calculate the value of LSB:

$d_1 d_2 ....d_8$= 10000000

$v_{0}=10 [1\times 2^{-1}+0+0+0+0+0+0+0]$

Value of MSN $V_{0}=\frac{10}{2^{1}}$5v

To calculate the full scale o/p voltage :

$d_{1}d_{2}...d_{8}$=11111111

$V_{FS}=10[\frac{1}{2} \frac{1}{4}\frac{1}{8}\frac{1}{16}\frac{1}{32}\frac{1}{64}\frac{1}{128}\frac{1}{256}$]

VFs9.961v

Full scale o/p=full scale voltage-1 LSB