Logic Systems N3 — Memo

April 2020 — N3 — Logic Systems

N3 2020 Nated Engineering

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Q1— Section header —

1.1EF,F + 37,3 + 11101101,1011 EF,F = 11101111,1111 37,3

1.2

1.34,5 B,C6 = 1011,11000110 4,5 = 100,101 1011,11000110 1c 1011,01011111 10111,00100101

1.4112,75 5,4 10 10 112,751110000,11 5,4101,100 10100,1 101111100001,1

Q2— Section header —

2.1(6\

2.2010 0111 100 0110 011 0110 010 0100 010 1000 (5\

2.3.1100101010111 110111111100

2.3.2

2.4ord is two or more bytes while word length is the number of bits in a word. (1\

2.5An alphanumeric code is a binary code for a group of elements consisting of decimal digits, letters of the alphabe both in uppercase and lowercase\ and a ce rtain number of special symbols, (2\ [20]20

3.1.5

3.2.1NOR gate (1\

3.2.2(2\

3.2.3(2\

3.3(5\

3.4[20]20

Q4— Section header —

4.1.5

4.2.1(2\

4.2.2It is called a delay flip flop because it delays the flow of data by at least one clock pulse. (2\

4.2.3The role of the NOT gate between the m aster and s lave is make sur e that they do no t switch Universal serial b (2\

4.4DVD Magnetic tape Punch cards Magnetic drum Paper tape (3\

4.5Reliability Low power consumption (4\ [20]20

Q5— Section header —

5.1.5

5.2.5

5.30] TOTAL:

Mark Allocation

Sections20 + 20 + 20 + 20 = 80 marks

Key Information

Contact Number010 1001000 · 0 100100010

Paper information

TitleMemo

SubjectLogic Systems

LevelN3

Document typeNated Engineering

Year2020

MonthApril

Pages7

Downloads4

Examination context

Decade2020s

Years ago6y

SeasonAutumn (SH)

Start dayWednesday

Exam periodApril 2020

Days since exam2,385

About Logic Systems 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

A TVET past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?

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.

File details

File size289.2 KB

Pages7

Archived on8 September 2026

File age48d

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