Microprocessor
The frequency of the driving network connected between pins 1 and 2 of 8085 microprocessor is

 twice the desired frequency
 four times the desired frequency
None of these
 equal to the desired frequency

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Microprocessor
HLDA signal in 8085 performs the following operation:

 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.
 Indicates that the CPU has received the HOLD request and that it will relinquish the bus in the next clock cycle.
 Indicates that the CPU has not received the HOLD request.

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Microprocessor
The interrupt facility is provided in microprocessor to

 change the sequence of the instructions being executed
 stop the microprocessor when it starts malfunctioning
 stop the microprocessor when desired
 keep a control on the working of the microprocessor

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