Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 has 5 interrupts lines, whereas 6800 has only two
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O
 8085 has multiplexed bus, whereas 6800 does not have
 None

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Microprocessor
A microprocessor is ALU

 and control unit on a single chip.
 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.

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Microprocessor
The correct sequence of steps in the instruction cycle of a basic computer is

 Fetch, Decode, Read effective address and, Execute.
 Fetch, Read effective address, Decode and Execute.
 Fetch, Execute, Decode and Read effective address.
 Read effective address, Decode, Fetch and Execute.

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