Concept:The dynamic range in
In fixed point, unsigned integer representation using N-bit, the range of Max to Min is 2
N to 1
In fixed-point signed integer representation using N-bit, the range of Max to Min number is 2
N-1 to 1
Calculation:The dynamic range of a 32-bit binary number B is:
Exponent = e – 127 varies from –127 to 128,
e = 0 = all bits (b30 ---- b23) are zero.
Now, the dynamic range is determined by the size of the exponent, which is
1 × 2-127(min) to 2128 (max).
Dynamic range:
Difference in Dynamic Ranges = 6.03 (28 – 31)
So, Option (2) is correct.