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

ANSWER DOWNLOAD EXAMIANS APP

Microprocessor
IN an intel 8085A microprocessor, why is READY signal used?

 To provide proper WAIT states when the microprocessor is communicating with a slow peripheral device.
 To indicate to user that the microprocessor is working and is ready for use.
None of these
 To slow down a fast peripheral device so as to communicate at the microprocessor’s device.

ANSWER DOWNLOAD EXAMIANS APP

Microprocessor
In an 8085 microprocessor based system, the contents of SP are 2000H. POP H instruction will transfer the contents of memory location

 2001H and 2000H to H and L registers respectively
 2000H and 1999H to H and L registers respectively
 2000H and 1FFFH to H and L registers respectively
 2001H and 2002H to H and L registers respectively

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Microprocessor