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Microprocessor

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

1000
100000
one million
10000

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Microprocessor
Register pair used to indicate memory

 W and Z
 H and L
 B and C
 D and E

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Microprocessor
Each instruction in assembly language program has the following fields:Lable fieldMnemonic fieldOperand fieldComment fieldThe correct sequence of these fields is?

2, 1, 3, 4
1, 2, 4, 3
2, 1, 4, 3
1, 2, 3, 4

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Microprocessor
The number of output pins in 8085 microprocessors are

 27.
 19.
 40.
 21.

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 1000H, PUSH B instruction will transfer the contents of registers B & C respectively for memory locations

 1000 H and 0FFF H
 1000 H and 1001 H
 0FFF H and 0FFE H
 0FFE H and 0FFF H

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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 Mhz.
 1Khz.
 2 Khz.
 8 Mhz.

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