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Microprocessor

Microprocessor
DMA is used between

 microprocessor and memory
 memory and I/O
 none
 microprocessor and I/O

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

one million
1000
100000
10000

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Microprocessor
In Fortran 77 a variable name can contain special characters.

True
False

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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

 8 Mhz.
 2 Mhz.
 2 Khz.
 1Khz.

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Microprocessor
A combinational PLD with a programmable AND array and a fixed OR array is called a

 PLD
 PROM
 PAL
 PLA

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Microprocessor
The number of interrupt lines in 8085 is

5
2
3
4

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