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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Intel 8085 Microprocessor MCQs | Page 1 of 5

Consider the following registers:
1. Accumulator and flag register
2. B and C register
3. D and E register
4. H and L register
Which of these 8-bit registers of 8085 microprocessor can be paired together to make a 16-bit register?
Answer: (b).2 ,3 and 4
Answer: (d).Arithmetic and logic operations can be directly performed with the I/O data
Answer: (b).To provide proper WAIT states when the microprocessor is communicating with a slow peripheral device.
consider the following
I) Sign flag II) Trap flag III) Parity flag IV) Auxiliary carry flag
Which one of the above flags is/are present in 8085 microprocessor?
Answer: (d).(I) ,(III) & (IV)
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?
Answer: (b).(II) only
Answer: (d).Accumulator, temporary register, arithmetic, logic circuits and five flags
Answer: (a).Enable the data bus to be used as low order address bus
Answer: (c).PC specifies the address of the instruction to be executed
Processor status word of 8085 microprocessor has five flags. They are
Answer: (a).S, Z, AC, P, CY
The cycle required to fetch and execute an instruction in a 8085 microprocessor is which one of the following?
Answer: (d).Instruction cycle
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