LABORATORY HANDBOOK FOR DIGITAL ELECTRONICS (DEE 2034) POLYTECHNIC STUDENTS

DEPARTMENT OF ELECTRICAL ENGINEERING
DEE 2034 – DIGITAL ELECTRONICS

PRACTICAL WORK 6

PROCEDURE :
PART A : Series In Series Out (SISO)

Figure 1
1. Connect a circuit as shown in Figure 1
2. Before you switch ON the circuit, let’s your supervisor check it’s first.
3. Then switch ON the power supply.
4. Touch once switch SW1 to trigger the clock ( Ck ) at pin 1 555 timer.
5. Observe the LED’s and record the result in Table 1. LED ON = 1, LED OFF = 0.
6. Please attach a relevant circuit photo for Figure 1.

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DEPARTMENT OF ELECTRICAL ENGINEERING
DEE 2034 – DIGITAL ELECTRONICS

PRACTICAL WORK 6

PART B: Parallel In Parallel Out (PIPO)

Figure 2

1. Connect a circuit as shown in figure 2
2. Before you switch ON the circuit, let’s your supervisor check it’s first.
3. Then switch ON the power supply.
4. Touches once switch SW1 to trigger the clock (Cp).
5. Observe the LED’s and record the result in Table 2.( LED ON = 1, LED OFF = 0)
6. Please attach a relevant circuit photo for Figure 2.

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DEPARTMENT OF ELECTRICAL ENGINEERING
DEE 2034 – DIGITAL ELECTRONICS

PRACTICAL WORK 6

QUESTION:

1. Explain the different between SISO and PIPO.
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( 5 marks)

RESULT :

Table 1

INPUT OUTPUT

Clock Pulse D1 LED 4 LED 3 LED 2 LED 1

10

20

30

40

51

61

71

81

90

10 1

11 0

12 1

(10 marks)

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DEPARTMENT OF ELECTRICAL ENGINEERING
DEE 2034 – DIGITAL ELECTRONICS

PRACTICAL WORK 6

Table 2

INPUT OUTPUT
D1 D2 D3 D4
Clock Pulse 1111 LED 4 LED 3 LED 2 LED 1
1 0000
2 1000
3 0100
4 1100
5 0010
6 1010
7 0110
8 1110
9 0001
10

Discussion : (10 marks)
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DEPARTMENT OF ELECTRICAL ENGINEERING
DEE 2034 – DIGITAL ELECTRONICS
PRACTICAL WORK 6

Conclusion :
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( 5 marks)

Attachment/ Reference :

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( 5 marks)

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RUBRIC : PRACTICAL OBSERVATION

Aspects Keypoints Excellent Good

1. Aptitude / Use of workshop 5 4
Timeliness clothes and
(5%) punctuality All members of the All members of the
group comply with group comply with
2. Setup The need to established laboratory established laboratory
equipment / implement the
cleanliness regulations. regulations.
(5%) practice All members come in There were members
(practical paper,
3. Teamwork multimeter & so time. who came timely.
(5%)
on). All the necessities are Most practical needs
Cleanliness during brought together and are brought together
/ after practical. and ready to practice.
ready to practice. The place of practice
Practical The place of practice
involvement in was completely
accomplishing was completely cleaned.
cleaned.
tasks and Most members
equipment All members actively actively participate.
responsibilities. participate. Responsible for the

Responsible for the maintenance of
maintenance of equipment /
equipment / components.
components.

4. Skills Knowledge of The operation of the The operation of the
(15 %) using equipment / circuit / components / circuit / components /

components, equipment after equipment after
know to make connecting works well connecting works well
and perfectly. Use of and perfectly. Use of
testing.
Knowledge of equipment / equipment /
equipment / components according components is less in
components
to procedures. accordance with
handling procedures.
procedures as

well as
procedures and
used properly and

neatly.

Scaling

Average Unsatisfactory Weak Weigh marks
t /5
3 2 1 1 /5
/5
There are members There are members of All members of the 1
of the group who do the group who do not group do not comply
comply with laboratory 1
not comply with with laboratory
laboratory regulations. regulations.
regulations. There are members
who do not come on There are members
All members come in who do not come on
time. time.
Most of the practical time.
Most of the practical needs are not carried Practical
needs are not carried requirements are not
out and are less carried out and are
out and are less prepared for practical less prepared for
prepared for practical work.
exercises. The place of practice
practical exercises. The place of practice is is not completely
The place of practice cleaned.
not completely
was completely cleaned. All members do not
cleaned. participate.

Most members Most members do not Not responsible for
actively participate. participate actively. maintaining
Less responsible for Less responsible for equipment /
maintaining equipment components.
maintaining
equipment / / components.
components.

The operation of the The operation of the The operation of the 3 /15
circuit / component / circuit / components / circuit / component /

equipment after equipment after equipment after
connecting works connecting does not connecting does not
well but less perfect. work properly but is
Use of equipment / work properly.
components is less in perfect. The use of the
accordance with Use of equipment / equipment /
components according components is not in
procedures. accordance with the
to procedures. procedures as well as

messy

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Aspects Keypoints Excellent Good
5 4
5. Circuit The results of the
Installation / circuit / Connection is correct Connectivity is correct
Connection equipment / and perfect. according to the
(20%) component
connecting within In accordance with the procedure but is not
6 Result / data the prescribed prescribed period. perfect / according to
collection period, in the prescribed period.
(20%) accordance with
the procedure and Ref
perfect and
correct

Results obtained
from practice.

Scaling

Average Unsatisfactory Weak Weight marks
3 2 1

Connection is correct Connection is correct Connectivity is less 4 /20
and perfect but not but not according to precise and does not
the procedure / not follow procedures.
according to Not according to the
procedures / according to the
according to the prescribed period. prescribed period.
designated period.

fer Scoring Practical Paper /20

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RUBRIC: LAB REPORT

Aspects Keypoints Excellent Good
5 4

1. Timeliness The accuracy of Reports are sent Reports are sent
(5%) submitting reports according to the according to the
designated period. designated period.

The name of the group Group member
members, number names, matrix
matrix and the name of numbers and lecturer
the lecturer stated names are
correctly. incomplete.

2. Neatness Examining the Clean and neat reports Reports are less clean
(5%) nicety of reports. in terms of item but tidy in terms of
arrangement. item susceptibility.
3. Preparation Simple writing style. Simple writing style.
of theory /
question Understanding Demonstrate a solid A simple
(5%) manual reading understanding of the understanding of
and lab work purpose of practical goals in practical work
4. Discussion papers work
(5%) Discussions are Discussions are
Description or described more described by simply
5. Conclusion discovery based critically and critically
(5%) on practices as well as linked to the associating with
conducted and theories studied with learned theories and
6. Attachment/ linked to theory examples. with some additional
Reference
(5%) Conclusions about Conclusions include information.
the practices that discovery during
are conducted activities that can Conclusions include
and can describe support all practical discovery during
the well- objectives. activities that can
conducted support some
practices. The related diagram is practical objectives.
attached together. List
Attachments and of reference materials The related diagram is
references are exceeds 3. attached together.
included. List of reference
materials less than 3.

Scaling

Average Unsatisfactory Weak
1
Weight marks

32

Reports are sent later Reports are sent later Reports sent over 2 1 /5
than the specified than the specified weeks from specified
period. period. period. 1 /5
Group member names, Group member name, 1 /5
Group member matrix numbers and matrix number and
names, matrix lecturer names are full lecturer name.
numbers and lecturer incomplete.
names are correctly Reports are less clean
stated. Reports are less clean and messy than
and less neat in terms
Net but not neat of order of items. aspect of item layout.
reports in terms of Simple writing style. Writings are poorly
item arrangement. understood.
Simple writing style. Poor understanding of
the purpose of There is no
Understanding less practical work understanding of the
goals in practical purpose of practical

work work.

Discussions are Discussions are Can not relate theory 1 /5
described by simply described by simply and practice and can
associating with the associating a little with
the theory learned. not give a good
theory studied. description.

Conclusions include Conclusions include Conclusions are not 1 /5
discovery during what's learned from included with the 1 /5
activities that can be activities only.
linked to one findings and
objective only. objectives as well as
the activities carried
Part of the diagram is Part of the diagram is
attached. List of attached. List of out.
reference materials
exceeds 3. reference materials The diagram is not
less than 3. attached. List of

reference materials
less than 3.

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