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Microprocessor

Microprocessor
Total number of instructions in 8085 microprocessor assembly language is

 247
 245
 244
 246

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Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

 S, Z, AC, P, CY
 S, Z, AC, P, OV
 S, Z, OV, P, CY
 S, OV, AC, P, CY

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 None of these
 Both ‘c’ and ‘d’
 Execution Unit (EU)
 Bus Interface Unit (BIU)

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

 12
 18
 16
 8

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Microprocessor
Consider the following statements: In 8085 microprocessor, data-bus and address bus are multiplexed in order to I)Increase the speed of microprocessor. II)Reduce the number of pins. III)Connect more peripheral chips. Which of these statements is/are correct?

 (I) only
 (II) only
 (II) & (III)
 (I), (II) & (III)

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

 68000
 8085
 6502
 Z-80

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