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
None of the numbers is changed
.5452 E – 3 is changed to 5.452 E – 4 but .9432 E – 4 is not changed
.9432 E – 4 is changed to .09432 E – 3 and .5452 E – 3 is not changed

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Microprocessor
Program counter in a digital computer

 Counts the numbers of programs run in the machine.
 Counts the number of times a subroutine is called.
 Points the memory address of the next instruction to be fetched.
 Counts the number of times the loops are executed.

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