Microprocessor
S0 and S1 pins are used for

 serial communication
None of these
 acknowledging the interrupt
 indicating the processor’s status

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

 PC specifies the address of the instruction being executed
 PC specifies the address of the instruction to be 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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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.
 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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