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Microprocessor

Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 16
 12
 8
 18

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Microprocessor
EPROMs are preferred for storing programs while developing new microprocessor based system. Because of their

 random access characteristic
 erasable and programmable characteristic
 non-volatile characteristic
 all the above characteristic

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Microprocessor
Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier.[Hint: Construct the truth table for the adder and the multiplier]

Circuit A has the same number of gates as circuit B
Circuit A has more gates than circuit B
None of these
Circuit B has more gates than circuit A

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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

 1Khz.
 2 Mhz.
 8 Mhz.
 2 Khz.

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

 RST 7.5 is recognized
None of these
 DAD RP instruction is executed
 INTR interrupt is recognized

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Microprocessor
In 8086 the number of bytes which can be addressed directly is about

1000
one million
100000
10000

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MORE MCQ ON Microprocessor

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