Microprocessor
Assertion(A): Monostablemultivibrators (IC74121) are used in a microprocessor based system for frequency measurement. Reason(R): Microprocessor counts the number of interrupt signals/second or within a specified interval through ISR.

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

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Microprocessor
A high on RESET OUT signifies that

 all the registers of the CPU are being reset
 all the registers and counters are being reset and this signal can be used to reset external support chip
 processing can begin when this signal goes high
 all the registers and counters are being reset

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