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

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

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Microprocessor
A microprocessor is ALU

 register unit and control unit on a single chip.
 and memory on a single chip.
 register unit and I/O device on a single chip.
 and control unit on a single chip.

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

 PC specifies the number of instructions executed so far
 PC specifies the address of the instruction to be executed
 PC specifies the address of the instruction being executed
 Program Counter (PC) specifies the address of the instruction last executed

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Microprocessor
A high on RESET OUT signifies that

 all the registers of the CPU are being reset
 all the registers and counters are being reset and this signal can be used to reset external support chip
 processing can begin when this signal goes high
 all the registers and counters are being reset

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