Past Questions: CIT411 - Microcomputers and Microprocessors

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Richtubor
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Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:35 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14-16 AHMADU BELLO WAY, VICTORIA ISLAND LAGOS
SEPTEMBER/OCTOBER 2016 EXAMINATION

SCHOOL OF SCIENCE AND TECHNOLOGY

COURSE CODE: CIT411

COURSE TITLE: MICROCOMPUERS AND MICROPROCESSORS

INSTRUCTION: Answer Question 1 and any other three.
Time: 2 HOURS

1.

Write a brief note on each of the following:

VLSI technology

RISC processor

ALU

D istinguish between Von Neumann and Harvard arch tectures.

2.

For a microprocessor briefly describe th e following features:

Word‐size

Processing speed

Instruction set

Memory

D istinguish between independent I/Oan d memory‐mapped I/O.

3.

a. D istinguish between machine languagendassembly language.

Write a brief note on each of the following:

Assembler directive

Subroutine

Instruction

4.

a. B riefly describe what DirectMemory Ac ess (DMA) is.

b. D istinguish between Instruction Set Architecture and Microarchitecture.

5.

Write brief notes on the following:

Accumulator

Program counter

Stack pointer

Write down the full interpretation of the following instructions:

MOV R2, #80h

POP 0h

ADD A, #25h

INC R7

6.

B riefly describe what an interrupt is, and explain what happens wh en it is trigger ed.

Write brief notes on the following:

Opcode

Oper and

Address Bus

Data Bus



Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
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Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:36 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14-16 AHMADU BELLO WAY, VICTORIA ISLAND LAGOS
SEPTEMBER/OCTOBER 2015 EXAMINATION
SCHOOL OF SCIENCE AND TECHNOLOGY
COURSE CODE: CIT411
COURSE TITLE: MICROCOMPUERS AND MICROPROCESSORS

INSTRUCTION: Answer Question 1 and any other three.
Time: 2 HOURS

1.

Write a brief note on each of the following:

VLSI technology

RISC processor

ALU

D istinguish between Von Neumann and Harvard arch tectures.

2.

For a microprocessor briefly describe th e following features:

Word‐size

Processing speed

Instruction set

Memory

D istinguish between independent I/Oan d memory‐mapped I/O.

3.

a. D istinguish between machine languagendassembly language.

Write a brief note on each of the following:

Assembler directive

Subroutine

Instruction

4.

a. B riefly describe what DirectMemory Ac ess (DMA) is.

b. D istinguish between Instruction Set Architecture and Microarchitecture.

5.

Write brief notes on the following:

Accumulator

Program counter

Stack pointer

Write down the full interpretation of the following instructions:

MOV R2, #80h

POP 0h

ADD A, #25h

INC R7

6.

B riefly describe what an interrupt is, and explain what happens wh en it is trigger ed.

Write brief notes on the following:

Opcode

Oper and

Address Bus

Data Bus
Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:38 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14-16 AHMADU BELLO WAY, VICTORIA ISLAND LAGOS
SEPTEMBER/OCTOBER 2015 EXAMINATION
SCHOOL OF SCIENCE AND TECHNOLOGY

COURSE CODE: CIT411

COURSE TITLE: MICROCOMPUERS AND MICROPROCESSORS

INSTRUCTION: Answer Question 1 and any other three.
Time: 2 HOURS
1.

Write a brief note on each of the following:

VLSI technology

RISC processor

ALU

D istinguish between Von Neumann and Harvard arch tectures.

2.

For a microprocessor briefly describe th e following features:

Word‐size

Processing speed

Instruction set

Memory

D istinguish between independent I/Oan d memory‐mapped I/O.

3.

a. D istinguish between machine languagendassembly language.

Write a brief note on each of the following:

Assembler directive

Subroutine

Instruction

4.

a. B riefly describe what DirectMemory Ac ess (DMA) is.

b. D istinguish between Instruction Set Architecture and Microarchitecture.

5.

Write brief notes on the following:

Accumulator

Program counter

Stack pointer

Write down the full interpretation of the following instructions:

MOV R2, #80h

POP 0h

ADD A, #25h

INC R7

6.

B riefly describe what an interrupt is, and explain what happens wh en it is trigger ed.

Write brief notes on the following:

Opcode

Oper and

Address Bus

Data Bus
Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:39 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14-16 AHMADU BELLO WAY, VICTORIA ISLAND LAGOS
MARCH/APRIL 2016 EXAMINATION
SCHOOL OF SCIENCE AND TECHNOLOGY
COURSE CODE: CIT411
COURSE TITLE: MICROCOMPUERS AND MICROPROCESSORS
Time: 2 HOURS
INSTRUCTION: Answer Question 1 and any other three.

1.
Distinguish between Von Neumann and Harvard architectures.
Write a brief note on each of the following:
Assembler
RISC processor
Multiprogramming

For a microprocessor briefly describe the following features:
Word-size
Processing speed
Instruction set
Address Bus
Distinguish between independent I/O and memory-mapped I/O.

Distinguish between machine language and assembly language.
Write a brief note on each of the following:
Assembler directive
Subroutine
Instruction

Briefly describe what Direct Memory Access (DMA) is.
Distinguish between Instruction Set Architecture and Microarchitecture.

Write brief notes on the following:
Accumulator
Program counter
Stack
Write down the full interpretation of the following instructions:
MOV R2, #72h
POP 80h
ADD A, #22h
INC R7

Briefly describe what an interrupt is, and explain what happens when it is triggered.
Write brief notes on the following:
Opcode
Operand
Mnemonics
Data Bus
Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:40 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14-16 AHMADU BELLO WAY, VICTORIA ISLAND LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2015 EXAMINATION
COURSE CODE: CIT 411
COURSE TITLE MICROCOMPUTER AND MICROPROCESSOR
TIME ALLOWED: 2 HOURS
INSTRUCTION: Answer any four questions out of six.

1. (a) Briefly explain the Von Neumann computer architecture.
(b) Outline and discuss the four addressing modes available to an 8085 microprocessor.

2. (a) Explain the term BUS in relation to microcontroller.
(b) Outline and discuss the various subcategories of a computer architecture.

3. (a) What are Condition Flags.
(b) Enumerate and explain at least five components of the 8085 microprocessor.

4. (a) (i) Define the following terms: Opcode and Operand.
(ii) Clearly stating the difference between them.
(b) Write out clearly the following logical operation.
SET B 2FH
CLR C
CPL 20H
MOV C, 87h
ANL C, 90h
ORL C, 91h

5. (a) Briefly explain the term Die.
(b) Outline and explain at least four technological innovations of microprocessors.

6. (a) Explain the term Interrupt, listing at least four types of interrupt.
(b) Outline at least five actions taken by the microcontroller when an interrupt is triggerred, enumerating at least five registers that the operation is protecting.

Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:41 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
SCHOOL OF SCIENCE AND TECHNOLOGY

October,2013 EXAMINATIONS
Course Code: CIT 411
Course Title: MICROCOMPUTERS AND MICROPORCESSORS
Time: 2 HOURS
INSTRUCTION: Answer any four questions out of six.

1. (a) Explained the term Die.
(b) List and explain four technological innovations of microprocessors.

2.(a) Explain the term Interrupt, listing at least four types of interrupt.
(b) Outline at least five actions taken by the microcontroller when an interrupt is triggerred,
enumerating at least five registers that the operation is protecting.

3. (a) What are Condition Flags.
(b) Enumerate and explain at least five components of the 8085 microprocessor.

4. (a) Define the following terms: Opcode and Operand. Clearly stating the difference between them.
(b) Write out clearly the following logical operation.
SET B 2FH
CLR C
CPL 20H
MOV C, 87h
ANL C, 90h
ORL C, 91h

5. (a)With reference to the microcontroller, explain what you understand by the term BUS.
(b) Outline and discuss the four addressing modes available to an 8085 microprocessor.

6. (a) Briefly expalin the Von Neumann computer Architecture.
(b) Outline and discuss the various subcategories of a computer architecture.
Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:42 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
JUNE/JULY EXAMINATION

COURSE CODE: CIT 411
COURSE TITLE: MICROCOMPUTERS AND MICROPORCESSORS
TIME ALLOWED:2 HOURS
INSTRUCTION: Answer question one and any other three questions

1. Using suitable diagram, draw the Architectural design of an 8085 Microprocessor, indicating at least
ten of its components and five of its features.

2. What is Microcomputer Networking? Outline and discuss any five of its various types.

3. Differentiate between the following microprocessor types based on hardware characteristics: RISC,
CISC, VLWI & Superscalar, clearly indicating four of their features each.

4. (a) Define the following terms: Opcode and Operand. Clearly stating the difference between them.
(b) Write out clearly the following logical operation.
SET B 2FH
CLR C
CPL 20H
MOV C, 87h
ANL C, 90h
ORL C, 91h

5. (a) What is an Assembly Language. Outlining four of its benefits.
(b) Outline and discuss the four addressing modes available to an 8085 microprocessor.

6. Explain the term Interrupt; clearly stating the actions taken by the microcontroller when an interrupt is
triggerred, enumerating at least five registers that the operation is protecting.
Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:44 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14-16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
JANUARY/FEBRUARY 2013 EXAMINATION

COURSE CODE: CIT 411
COURSE TITLE: MICROCOMPUTERS AND MICROPROCESSORS
CREDIT UNIT: 2CREDIT UNITS
TIME: 2HOURS
INSTRUCTION: ANSWER ANY FOUR QUESTIONS IN ALL

1a. Write short note on microcomputer networking [71/2marks]
1b. Discuss three main subcategories of Computer architecture. [10 marks]


2a. Give three (3) benefits of Direct Memory Access and list three (3) devices used for DMA. [71/2marks]
2b. Discuss five (5) microprocessor operations. [10 marks]


3a. Write short note on system bus. [71/2 marks]
3b. Write short note on three (3)uses of a microcomputer. [10 marks]

4a. Explain Direct Memory Access. [71/2 marks]
4b. List and explain four (4) formats for specifying operands / ADDRESSING MODES For 8085. [10 marks]

5a. Discuss five (5) types of microcomputer networking. [10 marks]
5b. Write short note on four (4) technological innovations of microprocessors [71/2marks]

6a. Write short note on memory organization and segmentation. [10 marks]
6b. Discuss interrupts. [71/2 marks]
Richtubor
Posts: 502
Joined: Mon Aug 21, 2017 8:24 pm
Contact:

Re: Past Questions: CIT411 - Microcomputers and Microprocessors

Postby Richtubor » Mon Aug 21, 2017 11:45 pm

NATIONAL OPEN UNIVERSITY OF NIGERIA
14-16 AHMADU BELLO WAY, VICTORIA ISLAND LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MAY/JUNE 2012 EXAMINATION

CIT 411 MICROCOMPUTERS AND MICROPROCESSORS (2 CR)
TIME: 21/2 HOURS

INSTRUCTION: ANSWER ANY FOUR QUESTIONS IN ALL

1a. Discuss microprocessor operations. [12 marks]
1b. Write note on the uses of a microcomputer. [8 marks]
1c. Explain Direct Memory Access. [5 marks]

2a. Write short note on technological innovations of microprocessors [10 marks]
2b. Discuss interrupts. [7 marks]
2c. List and show the hierarchy with a diagram the 4 components of a computer system. [8 marks]

3a. Enumerate the types of Microprocessor based on hardware classification and application areas classification. [10 marks]
3b. List and explain formats for specifying operands / ADDRESSING MODES For 8085. [10 marks]
3c. What is microcomputer networking? [5 marks]

4a. Explain any five types of intel microprocessor. [10 marks]
4b. Give four (4) benefits of Assemble language. [8 marks]
4c. Write short note on system bus and its types. [7 marks]

5a. Explain Microprocessor. [8 marks]
5b. Write short note on memory organization and segmentation. [8 marks]
5c. Computer architecture comprises at least three main subcategories. Discuss. [9 marks]

6a. Explain Assembly language. [7 marks]
6b. Discuss five (5) types of microcomputer networking. [10 marks]
6c. Give three (3) benefits of Direct Memory Access and list five (5) devices used for DMA. [8 marks]


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