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Welcome to the Intel 8085 Microprocessor MCQs Page

Dive deep into the fascinating world of Intel 8085 Microprocessor with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Intel 8085 Microprocessor, a crucial aspect of Microprocessor. In this section, you will encounter a diverse range of MCQs that cover various aspects of Intel 8085 Microprocessor, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Microprocessor.

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Check out the MCQs below to embark on an enriching journey through Intel 8085 Microprocessor. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Microprocessor.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Intel 8085 Microprocessor. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Intel 8085 Microprocessor MCQs | Page 4 of 5

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Q31.
What are software interrupts?

a.

RST 0-7

b.

RST 5.5 - 7.5

c.

INTR, TRAP

d.

RST 4.4 - 6.4

Discuss
Answer: (a).RST 0-7
Q32.
Which stack is used in 8085 ?

a.

FIFO

b.

LIFO

c.

FILO

d.

LILO

Discuss
Answer: (b).LIFO
Q33.
Why 8085 processor is called an 8 bit processor?

a.

because 8085 processor has 8 bit ALU

b.

because 8085 processor has 8 bit data bus

c.

because 8085 processor has 16 bit data bus

d.

because 8085 processor has 16 bit address bus

Discuss
Answer: (a).because 8085 processor has 8 bit ALU
Q34.
What is SIM in context of microprocessor ?

a.

Select Interrupt Mask

b.

Sorting Interrupt Mask

c.

Set Interrupt Mask

d.

Set Integer Mask

Discuss
Answer: (c).Set Interrupt Mask
Q35.
What is meant by maskable interrupts?

a.

an interrupt which can never be turned off

b.

an interrupt that can be turned off by the programmer

c.

an interrupt which can never be turned on

d.

an interrupt which can never be turned on or off

Discuss
Answer: (b).an interrupt that can be turned off by the programmer
Q36.
In 8086, Example for Non maskable interrupts are ________.

a.

trap

b.

rst6.5

c.

intr

d.

rst6.6

Discuss
Answer: (a).trap
Q37.
In 8085 microprocessor address line for RST3 is ?

a.

0020H

b.

0028H

c.

0018H

d.

0019H

Discuss
Answer: (c).0018H
Q38.
In 8086 the overflow flag is set when _____________.

a.

the sum is more than 16 bits

b.

signed numbers go out of their range after an arithmetic operation

c.

carry and sign flags are set

d.

subtraction

Discuss
Answer: (b).signed numbers go out of their range after an arithmetic operation
Q39.
In 8086 microprocessor the following has the highest priority among all type interrupts?

a.

NMI

b.

DIV 0

c.

TYPE 255

d.

OVER FLOW

Discuss
Answer: (a).NMI
Q40.
In 8086 microprocessor one of the following statements is not true?

a.

coprocessor is interfaced in max mode

b.

coprocessor is interfaced in min mode

c.

i/o can be interfaced in max / min mode

d.

supports pipelining

Discuss
Answer: (b).coprocessor is interfaced in min mode
Page 4 of 5

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