Unsiged Overflow
Recall that a carry out of the Most Significant Digit is an unsigned overflow. This indicates an error - the result is NOT correct!
63.75 + 0.25 ----------- 0
xxxxxxxx.0 decimal point to right
xxxxxx.yy two binary fractional digits.
0.yyyyyyyy decimal point to left (all fractional digits)
0.99600 + 0.00391 ----------- 0
Addition of two 8 bit numbers; different interpretations of results based on location of decimal point