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Microprocessor

Microprocessor
A 37 bit mantissa has an accuracy of

6 decimal places
10 decimal places
11 decimal places
8 decimal places

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Microprocessor
Bus Interface Unit (BIU) in 8086 performs the following functions:

 All the above.
 Arithmatic and Logic operations.
 Instruction decoding.
 Instruction fetch.

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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.
 2 Mhz.
 1Khz.
 8 Mhz.

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Microprocessor
CALL instruction is a ______ instruction.

 4 bytes
 1 bytes
 2 bytes
 3 bytes

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Microprocessor
Identify the non-programmable interfacing device from the following

 8212.
 8295.
 8257.
 8255.

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Microprocessor
Temporary registers in 8085 are

 D and E.
 B and C.
 H and L.
 W and Z.

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