Float format :

  1 bit sign, 7 bit exponent, 16 bit significand

Stored value :

  001111011011100101011000


  0   011 1101   1011 1001 0101 1000
. 

Sign bit 0 = +

Biased exponent.

  011 1101 
  654 3210

  2^5 + 2^4 + 2^3 +2^2 + 2^0 = 
   32    16     8    4     1 = 61

bias 2(n-1)-1 

  2(7-1)-1 = 64 -1 = 63

Unbiased value 

  61 - 63 = -2


  61 - 63 = -2

Adjust decimal

  1.1011100101011000 x 2^-2 = .011011100101011000

Conversion of fractional binary

  .                              Total
  0  x .5 (2^-1) =         .0       .0
  1  x .25 (2^-2) =        .25      .25
  1  x .125 (2^-3) =       .125     .375
  0  x .0625 (2^-4) =      .0       .375
  1  x .03125 (2^-5) =     .03125   .40625
  1  x .015625 (2^-6) =    .015625  .421875
  1  x .0078125 (2^-7) =   .0078125 .4296875
  0  x .00390625 (2^-8) =  .0       .4296875
  0  x .001953125 (2^-9) = .0       .4296875
  more