High School Physics

Microprocessor MCQ – Part 1 [with 8085 MCQ & 8086 MCQ]

Last updated on April 30th, 2023 at 04:36 pm

This is part 1 of the Microprocessor MCQ (Multiple Choice Questions) on 8085 & 8086.
This page contains question number 1 to question number 8 [out of 40 questions of this set].

Follow the links given below to find the other 4 parts of this MCQ set containing 8085 MCQ and 8086 MCQ.

MCQ Part 2 | MCQ Part 3 | MCQ Part 4 | MCQ part 5

Microprocessor MCQ on 8085 & 8086 – part 1

Part 1 of the Microprocessor MCQ set with 8085 MCQ & 8086 MCQ has question numbers 1 to 8 of the set of 40 MCQs.

1] The content of “HL” register pair is 204Ah. What will be the content of “HL” register pair after executing the instruction DAD H.

a] 204Ah
b] 4098h
c] 4094h
d] 2096h

2] To initiate DMA data transfer the signal to be sent to the CPU is

d] None of these

3] READY signal in 8085 is useful when the CPU communicates with

a] slow peripheral device
b] A fast peripheral device
c] A DMA controller chip
d]A PPI chip

 4] Which interrupt has the highest priority?

c] RST6.5
d] RST7.5

 5] In 8085 name the 16 bit registers?

a] Stack pointer
b] Program counter
c] A & B
d] None of these

 6] In an 8085, after the execution of XRA A instruction

a] The carry flag is set
b] The accumulator contains FFH
c] The content of accumulator is shifted by one
d] The zero flag is set

See also  8085 Executing the program and checking result

 7] The number of flags of the 8085 microprocessor is

a] 6
b] 5
c] 4
d] 3

8] 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] A & B.
d] None of these.

MCQ Part 2 | MCQ Part 3 | MCQ Part 4 | MCQ part 5

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