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Microprocessor

Microprocessor
Which one of the following microprocessor has 16-bit data bus?

 Z-80
 68000
 8085
 6502

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

 16
 8
 12
 18

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Microprocessor
Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor?

 1, 3, 5
 1, 3, 4
 2, 3, 5
 1, 2, 5

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

 PROM
 PAL
 PLA
 PLD

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Microprocessor
The frequency of the driving network connected between pins 1 and 2 of 8085 microprocessor is

None of these
 four times the desired frequency
 equal to the desired frequency
 twice the desired frequency

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

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

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