Cit411 Past Questions

Cit411 Past Questions. Are you one of the students of NOUN offering Cit 411? If yes then this write-up is for you. We have put up something beneficial to you for this course. Exams is fast approaching and you may have other courses to also study and prepare for its exams. No matter how many courses and credit loads you carry per semester, it is not enough to fail exams. The easiest way to pass your examination and come out with flying colors is to get the Cit411 Past Questions and answers compiled in pdf format.

Cit411 designates the Course title microcomputer and microprocessor offered by 400-level students of the National Open University of Nigeria. This is a technology-oriented course and can be classified as a course in the high-tech field of study. In this write-up, we will discuss the reasons why this past question is important to you. We will show you samples of the past question and how to download it to your preferred device or subsequent use. Pounds to Naira

Cit411 Past Questions is all About

This is a compilation of all questions asked during the microcomputer and microprocessor (CIT 411) examination and at different years and it is presented in the portable document file format. We make it very simple for those acquiring the past question. We bring questions from previous years together and provide the answers and explanations where necessary.

If you read and solve the past questions from 5 to 6 years of this examination, there is no way you would not be able to answer any question that you will be given during the exams. This is because the past question from five years would have covered all important questions and areas that are often used during the examination. You will also

Sample of Cit411 Past Questions

For a start, we will show you the Cit411 Past Questions from two different years. This may go a long way in convincing you to get your own copy of the past question. See samples below;

SAMPLE 1

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: MICROCOMPUTERS 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

Distinguish between Von Neumann and Harvard arch tectures. Cit411 Past Questions

2.

For a microprocessor briefly describe th e following features: Jamb form 

Word‐size

Processing speed

Instruction set

Memory Jamb Result

Distinguish between independent I/Oan d memory‐mapped I/O.

3.

a.Distinguish between machine languagendassembly language.

Write a brief note on each of the following:

Assembler directive

Subroutine

Instruction

4.

a. Briefly describe what Direct Memory Ac ess (DMA) is.

b. Distinguish between Instruction Set Architecture and Micro architecture.

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.

Briefly describe what an interrupt is, and explain what happens when it is triggered.

Write brief notes on the following: Waec Result

Opcode

Operand

Address Bus

Data Bus

SAMPLE 2

National Open University of Nigeria (NOUN) CIT 411 October 2019 Past Questions and Answers

1a.) Specify the hardware features of the CISC within the context of Microcomputers and Microprocessors. (4mks)

b.) Describe the concept of instruction and interpret its relationship with instruction set (3mks)
c.) Mention the 8085 flags (3mks)
d) Examine the main features of 8085 microprocessors (6mks)
e.) Determine examples of devices that can be used as i) servers and ii) clients (4 mks)
f.) Describe the concept of flag? State the various uses of flags in microprocessors. (5mks)

2a) With two examples each, illustrate the classes of 8085 instruction set based on word size. (12; mks)

2b) i. What is an Interrupt?
ii. Detect the likely causes of program crashes when interrupts routines }12;mk
are used?

3a.) Deduce the actions taken by microcontroller when an Interrupts is triggered (5mks)
b.) Describe the various types of computer ports and itemize their functions (6mks)
c.) i. What is Direct Memory Access? ) 2 mks
ii. Mention any four (4) devices that make use of DMA ) 2 mks

4a.) Illustrate the effect of the following assembly language instructions:
i) ORL D, 91h
ii) MOV D, 86h
iii) ANL C, 90h ) 2 x 5 = 10 marks
ii) CPL 20h
v)) SETB 25h
b.) Demonstrate using a well labelled diagram, the Harvard architecture (5mks)

5a.) Provide the classes of instructions vis-à-vis their respective functions (5mks)

b) Determine the main sub-categories of Computer architecture (7mks)
c.) State the reasons why DMA is required, outlining how it works (3mks)

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4. Sleep when you feel like: When you are preparing for any exams, sleeping is very important because it helps in the consolidation of memory. Caution: Only sleep when you feel like it and don’t oversleep.
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