Question 3
Halfword floating point:
b15 b14        b11 b10 b0
s e  f    
a) Bias: 16 values, use 8 - 1 = 7
b) unsigned binary: 0010 1011
 = 1.01011 * 25
exponent:  5 + 7 = 12 = 1100
1 1100 0101 1000 000
c) 0.43 = .01101110000102
 = 1.101110000102 * 2-2
exponent:  -2 + 7 = 5
0 0101 1011 1000 010