for example : 47.75
(1) convert to binary :
47.75 = 10111.11
(2) Normalization:
1.011111 x 2^5
(3)
The exponent ---> +5
+5 + 127 = +132
132 = 10000100
(4)
1bit 8bits 23bits
0 : postive
1 : negative exponent others
0 10000100 01111100000000000000000
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