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

 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
 PC specifies the address of the instruction to be executed

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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.

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

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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 but R is not the correct explanation of A .
 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.

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