Download EFFECTS OF CIRCUIT SIMULATION ON ACHIEVEMENT

EFFECTS OF CIRCUIT
SIMULATION ON
ACHIEVEMENT OF TECHNICAL
COLLEGE ELECTRONIC
STUDENTS
By
Akor Stephen
&
T. C. Ogbuanya
INTRODUCTION
• Electronics technology is a diverse field that is
playing a leading role in the scientific and
technical advancement. This area of technology is
applicable in almost all aspect of human
endeavour. The achievements of electronics have
formed the basis of an industry that produces
electronic equipment used in communications,
automation,
television,
radar,
computer
technology, instrument-making, and industrialprocess control systems, as well as illuminatingengineering, infrared, and X-ray equipment
(Shokin, 2010).
INTRODUCTION CONTINUE
• At the technical college level, electronic
technology is aimed at providing trained
manpower in applied science, technology and
commerce particularly at sub-professional
level. It is also geared towards giving training
and imparting the necessary skills leading to
the production of craftsmen, technicians, and
other skilled personnel who will be
enterprising and self-reliant. (Federal Republic
of Nigeria (FRN), 2004).
INTRODUCTION CONTINUE
• The attainment of the above aims has been rigidly
controlled under the tutelage of poor quality teachers,
teaching facilities and methods. These, according to
Aina (2000) are responsible for the high failure rates in
main trade subjects. He asserted that over the years,
records have shown that there is a sharp decline in the
level of students’ performances in the National
Technical Certificate Examination (NTC). Aina stressed
that a close examination of the factors responsible for
this wastage indicate that technical college education is
no longer attractive to youths because of poor teaching,
poor instructional techniques and scanty infrastructural
facilities.
Statement of the Problem
• As a result of increasing industrialization of modern
times and the role of electronics in our society,
knowledge and skills in electronics become
indispensible. According to O’Haver (2008),
Electronics is playing a leading role in the scientific
and technical revolution. The introduction of electronic
devices in various areas of human activity contributes
in large and often decisive measure to the resolution of
complex scientific and technical problems, to an
increase in the productivity of physical and mental
labour, and to the improvement of economic indexes of
production.
Statement of the Problem Continue
• Technical colleges are expected to produce
craftsmen. However, in the past ten years, they
have recorded a failure rate of over sixty per
cent in the WAEC and NABTEB NTC trade
component of the examination that should
certify them as craftsmen, (FME,2010).
Similarly, the chief examiners report asserted
that Radio-Television and Electronic work
candidates general performance in the three
components was very poor.
Statement of the Problem Continue
• Also worthy of note is the fact that the modern
industry emphasises efficiency and accuracy in
order to enhance production as well as save cost.
A personal interview with some technical
employees of Multinational Telecommunication
Network (MTN) and Ericson revealed that most
of their jobs like networking and signal testing are
simulated before putting into practice. As a result
of this, these employers prefer fresh recruits with
requisite knowledge in computer application in
various aspects of the profession.
Circuit Simulation
• Electronic Circuit Simulation is the use of computer
software to design, analyse and test circuits before
construction. According to Rozenblart(2003), it is a
computer program predicting the behaviour of a real
circuit. It replaces real components with idealized
electrical models.
• To analyse a circuit, one could build it on screen by
selecting components (resistors, capacitors, transistors,
diodes, power sources, etc.) from a library of parts
which then position and interconnect the desired circuit.
Circuit Simulation Continue
• You can perform most Circuit Maker tasks
using the buttons on the Toolbar, which is
conveniently located at the top of the
workspace. The tools are as shown below
Circuit Simulation Continue
Circuit Simulation Continue
• To design a circuit, click parts from the tool
bar and select the desired part and value, then
click place to place the part in the working
space.
• After placing the desired parts in the working
space, select the wire tool from the tool bar
and run the wiring.
• To analyse the circuit, select run from the tool
bar to run simulation.
Circuit Simulation Continue
• An interactive SPICE simulation window appears
during the SPICE data collection process showing
the progress of the simulation. When the SPICE
data collection process is completed, the
Multimeter Window appears.
• To determine the voltage click the wire
connected to the + terminal of the battery or
resistor with the tip of the Probe Tool and notice
the voltage value in the multimeter.
Circuit Simulation Continue
• The current at the battery or resistor is
computed by Clicking the + pin of the battery
or one of the resistor pins.
• While power is at any load is determine by
clicking directly on the resistor. All the values
appear in the multi-meter window.
Experimental Procedure
• To determine the achievement of students, the
total sample was divided into control and
experimental groups and a pre-test was
conducted to ensure that the students from the
two groups had the same aptitude.
• The control group was taught using lecture
demonstration while the experimental group
used circuit simulation.
Experimental Procedure
• And the end of the lessons, a post-test was
administered
to
determine
groups’
achievement.
Results
• The result from the findings showed that:
• There was no significant difference observed
on the mean pre-test scores between the
control and the experimental groups.
• There was a significant difference in the pretest and post-test scores of the control group.
• There was a significant difference in the pretest and post test scores of the experimental
group.
Results Continue
• The students in the experimental group scored
higher than those in the control group on the
post-test.
• The overall result showed that students taught
with circuit simulation achieved higher than
those taught with the lecture demonstration
method.
Recommendations
The following recommendations were made at the
end of the study.
• Technical teachers should be encouraged to
employ Circuit Simulation instructional strategy in
delivering their lessons, since it enhances
academic achievement.
• The tertiary institutions that train teachers should
include circuit simulation instructional in the
technical education courses in order to impart its
usage to student teachers
Recommendations Continue
• Curriculum planners should include the use of
circuit simulation in the electronics curriculum
considering its benefits in the teaching and
learning of electronics.
• Circuit simulation should be used to
complement laboratory experiment to save
cost and reduce the waste of materials.
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