Microprocessor
The stack pointer register in a microprocessor

 counts the number of instructions being executing on the microprocessor
 counts the number of programs being executing on the microprocessor
 keeps the address of the next instruction to be fetched
 holds the address of the top of the stack

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

.9432 E – 4 is changed to .09432 E – 3 and .5452 E – 3 is not changed
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

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Microprocessor
Assertion(A): The frequency of 8085 system is ½ of the crystal frequency. Reason(R): Microprocessor (8085) requires a two phase clock.

 Both A & R are true but R is not the correct explanation of A
 A is true but R is false
 Both A & R are true and R is the correct explanation of A
 A is false but R is true

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