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

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

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Microprocessor
Program counter in a digital computer

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

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