Microprocessor
An I/O processor controls the flow of information between

Cache and main memory
Cache memory and I/O devices
Main memory and I/O devices
Two I/O devices

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Microprocessor
ALU (Arithmetic and Logic Unit ) of 8085 microprocessor consists of

 Accumulator, arithmetic, logic circuits and five flags
 Accumulator, arithmetic and logic circuits
 Accumulator, temporary register, arithmetic and logic circuits
 Accumulator, temporary register, arithmetic, logic circuits and five flags

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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.

 Both A & R are true and R is the correct explanation of A.
 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.

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