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

 2 Khz.
 8 Mhz.
 1Khz.
 2 Mhz.

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Microprocessor
In 8085

P flag is set when the result has even parity
P flag is reset when the result has even parity
P flag is set when the result has odd parity
P flag is reset when the result has odd parity

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Microprocessor
FPGA means

 Field Parallel Gate Array
 Forward Programmable Gate Array
 Field Programmable Gate Array
 Forward Parallel Gate Array

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