Microprocessor
While using a frequency counter for measuring frequency, two modes of measurement are possible: Period time Frequency mode There is a ‘cross-over frequency’ below which the period mode is preferred. Assuming the crystal oscillator frequency to be 4MHz, the crossover frequency is given by

 8 Mhz.
 2 Khz.
 1Khz.
 2 Mhz.

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Microprocessor
IN an intel 8085A microprocessor, why is READY signal used?

 To slow down a fast peripheral device so as to communicate at the microprocessor’s device.
 To indicate to user that the microprocessor is working and is ready for use.
None of these
 To provide proper WAIT states when the microprocessor is communicating with a slow peripheral device.

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