Microprocessor
The microprocessor may be made to exit from HALT state by asserting

 any of the five interrupt lines
 READY line
 RESTART
 A or B or HOLD line

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Microprocessor
Ready pin of microprocessor is used

 to provide direct memory access
 to introduce wait state
 to indicate that microprocessor is ready to receive inputs
 to indicate that microprocessor is ready to receive outputs

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

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