[PDF] Questions on Introduction to Microprocessor 8085 Instruction Set PDF

What are the different addressing modes in 8085? Register:- Data is provided through the registers. Or operand is only register(s). Example: MOV Rd Rs

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MCQ (1 Mark Questions ). Q. No Question. Marking Scheme. 1. The ______ flag Explain the register and direct addressing modes of 8085 microprocessor with ...

UNIT I – 8085 MICROPROCESSOR

8085 has the following 5 different types of addressing. • Immediate Addressing Addressing modes for accessing data in memory (memory modes). C. Addressing ...

PROBABLE Question &Answer

128KB. View Answer. Ans : C. Explanation: In 8085 16-bit address bus

Questions on Introduction to Microprocessor 8085 Instruction Set

Questions on Introduction to Microprocessor 8085 Instruction Set. MCQ Type Questions. 1. Microprocessor with a 16 – bit address bus is used in a linear memory

Computer Architecture & Organization MCQ Questions:-

Which of the following addressing modes are suitable for program relocation at run time ? In 8085 which of the following modifies the program counter ? A ...

1. Which interrupt has the highest priority? a) INTR b) TRAP c) RST6

Why 8085 processor is called an 8 bit processor? a) Because 8085 processor c) I/O can be interfaced in MAX / MIN mode d) Supports pipelining. 23. 8088 ...

1. The instruction that is used to transfer the data from source

Explanation: The 8051 stack is opposite to that in 8085 or 8086 i.e. in 8085 it is auto-decrement while in Explanation: The six addressing modes of 8051 are.

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POST MCQ: 1. The microprocessor ______ those instructions from the The 8085 microprocessor architecture addressing modes

Multiple Choice Questions on 8086 Microprocessor

The functions of Pins from 24 to 31 depend on the mode in which is operating. A. 8085. B. 8086. C. 80835. D. 80845. ANSWER: B. 47. The RD WR

[PDF] Questions on Introduction to Microprocessor 8085 Instruction Set

Questions on Introduction to Microprocessor 8085 Instruction Set MCQ Type Questions 1 Microprocessor with a 16 – bit address bus is used in a linear

[PDF] Multiple Choice Questions 1 Intel 8085 is a ______ bit

What are the different addressing modes in 8085? Register:- Data is provided through the registers Or operand is only register(s) Example: MOV Rd Rs

[PDF] CONTENTS

Answers to Multiple-Choice Questions 36 3 Instruction Set and Addressing Modes of 8085 Microprocessor 3 1 Introduction 37 3 2 Addressing Modes

[PDF] Important Instructions for Multiple Choice Question (MCQ)

for Multiple Choice Question (MCQ) In 8085 microprocessor why is READY signal used? The addressing mode used in the instruction PUSH B is

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MCQ 1 Mark The 8085 microprocessor can address bytes of memory Explain the register and direct addressing modes of 8085

[PDF] 8085 microprocessor mcq questions and answers

This contains 25 Multiple Choice Questions for Electrical Engineering (EE) Test: In 8085 which addressing mode is also called inherent addressing?

[PDF] Multiple Choice Questions on 8086 Microprocessor

In 8086 microprocessor the address bus is bit wide A 12 bit The functions of Pins from 24 to 31 depend on the mode in which is operating A 8085

[PDF] 1 The instruction that is used to transfer the data from source

Explanation: In Immediate addressing mode immediate data is a part of of Pins from 24 to 31 depend on the mode in which ______ is operating A 8085

[PDF] DEPARTMENT OF COMPUTER ENGINEERING SAMPLE MCQs

SAMPLE MCQs CM3908 MICROPROCESSOR Q 1 In 8085 how many interrupts are maskable? a) Two b) Three c) Four d) Five Q 2 which one of the following addressing

Questions on Introduction to Microprocessor 8085 Instruction Set

MCQ Type Questions

1. Microprocessor with a 16 - bit address bus is used in a linear memory selection

configuration address bus lines are directly used as chip selects of memory chips with four memory chips. The maximum addressable memory space is a) 64K b) 16 K c) 8K d) 4K

2. How many bits are used in the data bus for 8085?

(A) 7 (B) 8 (C) 10 (D) 16

3. PC stands for

(A) Program counter (B) Points counter (C) Paragraph counter (D) Paint counter

4. SP stands for

(A) Status pointer (B) Stack pointer (C) a and b (D) None of these

5. Because microprocessor CPUs do not understand mnemonics as they are, they have to be

converted to ________. (A) hexadecimal machine code (B) binary machine code (C) assembly language (D) all of the above

True/false statements

1. Programs written for the 8080A must have slight modifications to run on the 8085A.

2. The 8085 software is compatible with the 8080A.

3. 8085 has 16 bit address bus

4. 8085 has 12 bit data bus.

5. MVI A, 55h is an example of register addressing mode.

6. Program counter is part of memory.

7. 8085 is 8 bit microprocessor.

8. In MOV A,B instruction MOV is operand and A,B is opcode.

Fill in the blanks:

1) Microprocessor 8085 is a ------------------ bit processor.

2) 1 nibble is --------------------bits

3) I byte is --------------bits

4) 8085 has ----------------- numbers of flags.

5) Microprocessor 8085 has -------- number of pins.

6) Address bus of 8085 microprocessor is of -------- bits.

7) Data bus of 8085 microprocessor is of -------- bits.

8) --------------Numbers of general purpose registers are present is 8085.

9) The length of A - register is - - - bits.

10) The length of program counter is - - - bits.

11) The length of stack pointer is - - - bits.

12) The size of stack register is-------------- bits.

13) An Instruction has two parts: Opcode and the -------------.

14) The method of specifying an Operand is called--------------.

15) Examples of 1-byte instruction -------------------------.

16) Examples of 2-byte instruction -------------------------.

17) Examples of 3-byte instruction -------------------------.

18) The address bus width of 64 KB of memory is ----------------.

19) ------------------machine cycles are needed for execution of 1 byte instruction.

20) ------------------machine cycles are needed for execution of 2 byte instruction.

21) ------------------machine cycles are needed for execution of 3 byte instruction.

Short questions-answers

1. What are the various registers in 8085?

2. In 8085 name the 16 bit registers.

3. What are the various flags used in 8085?

4. What is Stack Pointer?

5. What is Program counter?

6. What is the result for PUSH PSW?

7. What is the result after execution of POP PSW?

What is the output after execution of the following instruction?

1. PROGRAM 1

MVI A, 44h

STA 3000

HLT

2. PROGRAM 2

MVI A, 55H

MOV B, A

HLT

3. PROGRAM 3

MVI A, 55H

HLT

Long Question:

How many bytes are needed in 8085 microprocessor for execution of following instruction?

1) MOV 2) MVI 3) LDA 4) STA

5) LXI 6) ADD 7) SBB 8) INR

9) DCX 10) ANA 11) ORI 12) CMP

13) CMC 14) RRC 15) JZ 16) JPE

17) CALL 18) RET 19) HLT 19) PUSH

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[PDF] [PDF] Questions on Introduction to Microprocessor 8085 Instruction Set

MCQ Type Questions

1. Microprocessor with a 16 - bit address bus is used in a linear memory selection

2. How many bits are used in the data bus for 8085?

3. PC stands for

4. SP stands for

5. Because microprocessor CPUs do not understand mnemonics as they are, they have to be

True/false statements

1. Programs written for the 8080A must have slight modifications to run on the 8085A.

2. The 8085 software is compatible with the 8080A.

3. 8085 has 16 bit address bus

4. 8085 has 12 bit data bus.

5. MVI A, 55h is an example of register addressing mode.

6. Program counter is part of memory.

7. 8085 is 8 bit microprocessor.

8. In MOV A,B instruction MOV is operand and A,B is opcode.

Fill in the blanks:

1) Microprocessor 8085 is a ------------------ bit processor.

2) 1 nibble is --------------------bits

3) I byte is --------------bits

4) 8085 has ----------------- numbers of flags.

5) Microprocessor 8085 has -------- number of pins.

6) Address bus of 8085 microprocessor is of -------- bits.

7) Data bus of 8085 microprocessor is of -------- bits.

8) --------------Numbers of general purpose registers are present is 8085.

9) The length of A - register is - - - bits.

10) The length of program counter is - - - bits.

11) The length of stack pointer is - - - bits.

12) The size of stack register is-------------- bits.

13) An Instruction has two parts: Opcode and the -------------.

14) The method of specifying an Operand is called--------------.

15) Examples of 1-byte instruction -------------------------.

16) Examples of 2-byte instruction -------------------------.

17) Examples of 3-byte instruction -------------------------.

18) The address bus width of 64 KB of memory is ----------------.

19) ------------------machine cycles are needed for execution of 1 byte instruction.

20) ------------------machine cycles are needed for execution of 2 byte instruction.

21) ------------------machine cycles are needed for execution of 3 byte instruction.

Short questions-answers

1. What are the various registers in 8085?

2. In 8085 name the 16 bit registers.

3. What are the various flags used in 8085?

4. What is Stack Pointer?

5. What is Program counter?

6. What is the result for PUSH PSW?

7. What is the result after execution of POP PSW?

1. PROGRAM 1

MVI A, 44h

STA 3000

2. PROGRAM 2

MVI A, 55H

MOV B, A

3. PROGRAM 3

MVI A, 55H

Long Question:

1) MOV 2) MVI 3) LDA 4) STA

5) LXI 6) ADD 7) SBB 8) INR

9) DCX 10) ANA 11) ORI 12) CMP

13) CMC 14) RRC 15) JZ 16) JPE

17) CALL 18) RET 19) HLT 19) PUSH