This page has every Logic Systems N4 August paper we have, from 2018 to 2021: 3 question papers and 2 memos in 5 PDFs. The newest year is first. Each paper shows the first page of questions, its marks and time, and what the questions cover.
Logic Systems N4 August papers by year
Logic Systems N4 August 2021 question papers and memos
August 2021
EMS N4 August 2021 question paper
100 marks · 3 hours · 6 pages · 5 questions
What is in this paper (5 questions)
Q1
1.1 Give the symbols of the hexadecimal number system. (1) 20 marks
Q2
2.1 Convert each of the following numbers to their BINARY equivalents and then 25 marks
Q3
3.1 Draw the circuit diagram of the following Boolean expressions. DO NOT change 25 marks
Q4
With the aid of Karnaugh maps and the table below, design a circuit that will convert the 20 marks
Q5
Make a neat, labelled sketch of a monostable multivibrator using NPN transistors. [10] 10 marks
Instructions to candidates Answer all the questions. Read all the questions carefully. Number the answers according to the numbering system used in this question paper. Start each question on a new page. All the sketches and diagrams must be large, clear and neat. Keep questions and subsections of questions together. Questions must be answered in blue or black ink and all drawings must be done with a pencil. All calculations must be shown. Calculations and calculated answers must be given in THREE fractional radix spaces, for example 10,101 . 2 Write neatly and legibly. (8080284) -3-
Logic Systems N4 August 2019 question papers and memos
August 2019
EMS N4 August 2019 question paper
100 marks · 3 hours · 5 pages · 5 questions
The memo for this paper is not available yet.
What is in this paper (5 questions)
Q1
1.1 Write down the symbols of the hexadecimal number system. (1) 20 marks
Q2
2.1 Convert each of the following numbers to their BINARY equivalents and then 25 marks
Q3
3.1 Draw the circuit diagram of the Boolean expression below. Do NOT change or 25 marks
Q4
Using J-K flip-flops, design a synchronous counter with outputs A, B and C to count the 20 marks
Q5
Make a neat, labelled sketch of a basic BJT mono-stable multivibrator that uses NPN- 10 marks
Instructions to candidates Answer ALL the questions. Read ALL the questions carefully. Start each question on a NEW page. Number the answers according to the numbering system used in this question paper. ALL the sketches and diagrams must be large, clear and neat. Keep questions and subsections of questions together. Questions must be answered in BLUE or BLACK ink andrd awings must be done in PENCIL. Show ALL calculations. Calculations andans wers must be given in THREE fractional radix spaces, for example 10,101 2 Work neatly and legibly. (8080284) -3-
Logic Systems N4 August 2018 question papers and memos
August 2018
EMS N4 August 2018 question paper
100 marks · 3 hours · 4 pages · 5 questions
What is in this paper (5 questions)
Q1
1.1 Name the FOUR basic operations of the CPU in your home computer. (4) 21 marks
Q2
2.1 Convert each of the following numbers to their BINARY equivalents and then 33 marks
Q3
3.1 Draw the circuit diagram of the Boolean expressions below. Do NOT change 25 marks
Q4
One of the codes that are used in the military for security purposes is a Gray code. 15 marks
Q5
Make a neat labelled sketch of a mono-stable multivibrator using NPN transistors. [6] 6 marks
Instructions to candidates Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use only BLUE or BLACK ink. Start each question on a NEW page. Keep subsections of questions together. Do ALL drawings with a pencil. ALL sketches and diagrams must be large, clear and neat. Show ALL calculations. Write neatly and legibly. (8080284) -3- T940(E)(A2)T
No papers match. Clear the filters
Questions about these papers
Which years of EMS N4 August papers are on this page? Papers from 2021, 2019, 2018. The newest year is at the top.
How many marks is the EMS N4 August paper? The paper is usually out of 100 marks and you get 3 hours to write it.
Are the memos included? Yes. 2 of the 3 papers on this page have their marking memo next to the question paper.
