Logic Systems N5 — Document

November 2020 — N5 — Logic Systems

N5 2020 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 7 pages 📝 51 items found

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Q1— Section header —

Q3— Section header —

3.1onvert a 400 Mhz frequency clock pulse series to a 50 hz clock pulse ser ies. Draw a fully labelled suitable circu it

3.2Calculate (or motivate\the number of JK fli flops you have in

Q3— Section header —

Q4— Section header —

4.1hift registers are used mainly to store data permanently.

4.2Shift registers are used to count clock pulses.

4.3A shift of data from LSB to MSB is cal led left shifting

4.41000 s a Johnson Code number.

4.5Seri in seri

4.6A circulating shift register has its serial input connected to its serial input.

4.7A circulating shift register has its serial output c onnected to its serial input.

4.8parallel serial

4.9A Johnson counter is a counter.

4.10A Johnson counter circulat es more than one 1 in each n umber.

4.11A ring counter an d a Johnson counter are one and the same.

4.121000 an d 0001 are both Johnson and Ring code numbers.

4.13Two left shifts of 0001 results in 0100

4.14Three right shifts of 1000 results in 0010

4.15Three left shifts of 0100 in a R ing counter results in 0010 2. (15 1\

Q5— Section header —

5.1FIGURE 1 Briefly explain the purpose of an Arithmetic Logic Unit (ALU\. (2

5.2Name the circuit rep resented by FIGURE 1 above. (2

5.3Redraw FIGURE 1 in the ANSWER BOOK and show cle arly on the circuit how 3 is performed. (11\ [15]15

Q6— Section header —

6.1Refer to the memory devices in FIGURE 2 abo ve and write down the correct answers to the following questions next to the question numbers (6.1.1

6.1.3in the ANSWER BOO K.

6.1.1Name the devic e in FIGURE 2A

6.1.2Name the dev ice in FIGURE 2B

6.1.3Name the device in FIGURE 2C (3 1\ (3\

6.2Refer to the three memory devices in FIGURE 2 above and write down the correct answers (A, B, C or NONE\to the following questions nex t to the question numbers (6.2.1

6.2.9\n the ANSWER BOOK.

6.2.1Which of the devices are static cells? (1\

6.2.2Which of the devices are dynamic cells? (1\

6.2.3Which of the devices are olatile? (1\

6.2.4Which of the devices u se magnetism? (2\

6.2.5Which of the devi ces is an internal memory device? (1\

6.2.6Which of the devices are external secondary memory? (2\

6.2.7Which of the devices have transportable storage media? (1\

6.2.8Which device w ould have the largest storage capacity? (1\

6.2.9 Which devices are no longer used in computers? 2\ [15]15

Q7— Section header —

7.6\next to the question numbers (7.1

7.6\in the ANSWER BOOK. A. Static printer B. Inkjet printer C. Graph plotter D.

7.1TWO print ers that print pre formed characters (2\

7.2TH REE impact printers (3\

7.3FIVE non impact printers (5\

7.4THREE printers that can print in colour (3\

7.54The printer that can print on the largest paper size (1\

7.6The prin ter with the highest printing speed (1\ [15] TOTAL 10015

Mark Allocation

Total100 marks

Sections15 + 15 + 10 + 15 + 15 + 15 + 15 = 100 marks

Paper information

TitleDocument

SubjectLogic Systems

LevelN5

Document typeQuestion paper

Year2020

MonthNovember

Pages7

Downloads2

Examination context

Decade2020s

Years ago6y

SeasonSpring (SH)

Start daySunday

Exam periodNovember 2020

Days since exam2,170

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

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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

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working under time constraints

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A practical revision approach

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