Microprocessor
Assertion(A): Ready signal of microprocessor is used to detect whether a peripheral is ready for the data transfer or not. Reason(R): In the microprocessor during data transfer operations, the wait states are added by forcing the ready signal low.

 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 .
 A is true but R is false.
 A is false but R is true.

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Microprocessor
Which of the following statements for intel 8085 is correct?

 PC specifies the address of the instruction to be executed
 PC specifies the address of the instruction being executed
 Program Counter (PC) specifies the address of the instruction last executed
 PC specifies the number of instructions executed so far

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