Microprocessor
Assertion(A): Address bus is unidirectional. Reason(R): Data bus is bidirectional

 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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Microprocessor
Program counter in a digital computer

 Counts the number of times a subroutine is called.
 Counts the number of times the loops are executed.
 Points the memory address of the next instruction to be fetched.
 Counts the numbers of programs run in the machine.

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Microprocessor
How can we make any bit of a register “1”?

 OR that bit with “1” and remaining bits with “0”.
 AND that bit with “0” and remaining bits with “1”.
 OR that bit with “0” and remaining bits with “1”.
 AND that bit with “1” and remaining bits with “0”.

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