Microprocessor
Which one of the following statement is false?

 A microprocessor has unidirectional address bus
 A microprocessor has bi-directional data bus
 A microprocessor has bi-directional address bus
 A microprocessor has an ALU

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Microprocessor
Ready pin of microprocessor is used

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

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