Digital Electronics N6 — Document

April 2018 — N6 — Digital Electronics

N6 2018 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 28 items found 📚 2 topics

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Q1— Section header —

1.1State what type of transducer could be used to measure the temperatures that are required as triggers for the compute (1\

1.2Would the loop from the computer to the reactor be described as the feedback loop or the action loop (1\

1.3Draw a fully labe led block diagram to describe the digital process control system that would be used to accomplish the above task. ALL elements in the system must be included AND clearly labe led. ALL signal directions must be

1.4Before any computer system can be introduced a systems analyst must first prepare a non technical report so that management can make a decision whether or not to go ahead with the implementation of the system.

Q2— Section header —

2.1Draw the block diagram of a modem and very briefly state the function of the modem on the transmit side as well as on the receive side. (6\

2.2Show by means of a simple diagram how frequency shifted keying (fsk\ works. (3

2.3A multiplexer (mux\ is a versatile piece of hardware. Aside from multiplexing name FOUR of its other applications in a digital system

2.4If a computer is connected to a server via the telephone lines, certain hardware is implicitly needed to interface this connection. Draw a block diagram to illustrate the interfacing elements required on the

2.5State what the acronym UART stands for. (1 [20] 808037620

Q3— Section header —

3.1Draw a fully labe led block diagram of a control unit integrated with a random access memory (RAM\and which is driven by a six

3.2Use the table below to show what happens after each pulse from the micr

Q3— Section header —

Q4— Section header —

4.1What do the acronyms BASIC and COBOL stand for? (2\

4.2Consider the following FORTRAN program segment IMAGE = 15 TOOLBOX = 8 22002 ANSWER = IMAGE + TOOLBOX TOOLBOX = TOOLBOX + 7 IF (ANSWER.LT.40\O TO 22002 PRINT, ANSWER, IMAGE, TOOLBOX

4.3Indicate the differences in speed and in ease of de bugging between a compiled program and a translated program. Put your answer in tabular form

4.4What is the difference between a bug in a program and a virus in a program (2\

4.5What is a subroutine (2\ [20]20

Q5— Section header —

5.1The word below is received in Hamming ode. By showing ALL the steps involved find the fault in the word; clearly state the bit number on which the fault lies and then rewrite the word correctly,

5.2Write the following floating point number in decimal, showing ALL your steps 100 0 11110000

5.3Rewrite the following binary coded decimal (8.4.2.1\the XS 3 code: 1000 1001 0000

8.4.2.1 (3\

5.4Rewrite the following Gray ode number in binary: 1101001 gray (2\

5.5Using the variables A, B and C, write down the general rule for the distributive law in Boolean lgebra. (2\ [20] TOTAL: 10020

Topics Identified

LeadershipBusiness Plan

Mark Allocation

Total100 marks

Sections20 + 20 + 20 + 20 + 20 = 100 marks

Paper information

TitleDocument

SubjectDigital Electronics

LevelN6

Document typeQuestion paper

Year2018

MonthApril

Pages5

Downloads4

Examination context

Decade2010s

Years ago8y

SeasonAutumn (SH)

Start daySunday

Exam periodApril 2018

Days since exam3,113

About Digital Electronics examination preparation

This TVET examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.

How to use this resource for revision

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For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

understanding question requirements

applying subject knowledge

working under time constraints

checking answers

identifying revision priorities

A practical revision approach

Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.

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