Microprocessor
In an intel 8085A, which is the first machine cycle of an instruction?

 An I/O read cycle
 A memory write cycle
 An op-code fetch cycle
 A memory read cycle

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Microprocessor
Assertion (A): Each memory chip has its own address latch. Reason (R): ALE signal comes out of microprocessor 8085 and goes to memory chip.

Both A and R are correct and R is correct explanation of A
A is correct R is wrong
Both A and R are correct but R is not correct explanation of A
A is wrong R is correct

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Microprocessor
When RET instruction is executed by any subroutine then

 without any operation, the calling program would resume from instruction immediately following the call instruction.
 the top of the stack will be popped out and assigned to the PC.
 the PC will be incremented after the execution of the instruction.
 without any operation, the calling program would resume from instruction immediately following the call instruction and also the PC will be incremented after the execution of the instruction.

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