Logic Systems N4 — Document

April 2019 — N4 — Logic Systems

N4 2019 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 24 items found 🔑 1 key info

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Questions — A Preview of What to Expect in the Document

This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.

Q1— Section header —

1.1Give the symbols of the octal number system. (1\

1.2What is the decimal value of a binary 1 which is in the third position to the right of the radix comma? (1\ 1. Determine the two s complement

1.5Simplify the following Boolean expressions:

1.5.4(4 1\ (4\

1.6Determine the simplest Boolean expression for the following Karnaugh maps Redraw each Karnaugh map and show the groupings.

1.6.100 01 11 10 00 01

1.6.200 01 11 10 00 01

1.6.300 01 11 10 00

1.7Draw the truth t able for a JK master/ slave flip flop. (4\ [20] AB CD20

Q2— Section header —

2.1Convert each of the following numbers to their BINARY equivalents and then complete the calculati ons in the binary number system. Show all conversions.

2.1.1Use two s complement subtraction. onvert the final answer to the decimal numbering system.

2.1.2Convert the final ans wer to the hexadecimal system.

2.1.3Convert the final answer to the octal system (3 6\ (18\

2.2Convert 8,65 to the 8421 BCD code. (4\

2.3Convert to the Excess 3 code. (3\ [25]25

Q3— Section header —

3.1Draw the circuit diagram of each of the following Boolean expression s. Do NOT change or simplify the expression

3.1.3(3 5\ (15\

3.2Simplify the following Boolean expressions by using Boolean laws. Draw the simplified circuit diagrams by using NAND gates only.

3.2.2(2 5\ (10\ [25] 816 122,3-132,C 810 36,46,2525

Q4— Section header —

Q5— Section header —

Mark Allocation

Total100 marks

Sections20 + 25 + 25 + 10 = 80 marks

Key Information

Contact Number0001011100

Paper information

TitleDocument

SubjectLogic Systems

LevelN4

Document typeQuestion paper

Year2019

MonthApril

Pages5

Downloads3

Examination context

Decade2010s

Years ago7y

SeasonAutumn (SH)

Start dayMonday

Exam periodApril 2019

Days since exam2,749

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.

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File size159.9 KB

Pages5

Archived on8 September 2026

File age46d

ContributorFreeMode

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