Microprocessor
HLDA signal in 8085 performs the following operation:

 Indicates that the CPU has not received the HOLD request.
 Indicates that the CPU has received the HOLD request and that it will relinquish the bus in the next clock cycle.
 Hold the data in the accumulator until the microprocessor is turned OFF.
 Indicates that another master is requesting the use of the address and data buses.

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Microprocessor
Which one of the following is not correct?

 An interrupt signal is required at the start of every program
 An instruction is a set of bits that defines a computer operation
 Bus is a group of wires
 Bootstrap is a technique or device for loading first instruction

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