Microprocessor
After RESET 8255 will be in

 mode 0; all ports are input
 mode 2
 mode 0; all ports are output
 unchanged condition

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Microprocessor
When .9432 E – 4 is subtracted from .5452 E – 3 in normalized floating point mode

Both Ihe numbers are changed and their exponents are, made equal to -5
.9432 E – 4 is changed to .09432 E – 3 and .5452 E – 3 is not changed
.5452 E – 3 is changed to 5.452 E – 4 but .9432 E – 4 is not changed
None of the numbers is changed

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