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Design And Construction Of An Eletronic Digital Display System (moving Message Display)
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Electronic digital display system is also used for outdoor
advertisement. Before, outdoor advertising was mainly characterized by
the use of paper. Every bus stop and billboard had a paper advertisement
inside. The reason for this was simple paper was easy to use and
extremely cheap. It had some draw backs as well. Before an image is
actually on the street, it first has to be printed, pasted and placed.
The journey from design to placement is quite long. Another
disadvantages is the considerable amount waste generated by the use of
paper. Finally, many people ignore a paper advertisement and there
attention is drawn to the vibrant environment around them and not to a
still image.
The extent of development in information
dissemination has made it possible that the well known method of
displaying information using sign posts, notice boards, etc has to be
modified by using electronic digital display system. In today’s rapidly
advancing technology market, most conventional digital display system
are not being implemented using individual logic gates and integrated
circuits (ICs) such have been used in the past instead, programmable
devices such as microprocessor and microcontroller chips which contain
the circuitry necessary to create logic functions are being used to
implement digital systems. The use of 555 timer as a stable
multivibrator and decade counter (CD4017) can be used to build less
expensive electronic display system. The use of these two major ICs will
bring about less board space, less power consumptions and overall, low
cost in manufacturing.
This project however; emphasizes
mainly on the display of information using two major integrated circuits
(ICs) namely NE555 timer (ICI) and CD4017 (IC2) to control the lighting
of LEDs. This message display circuit is built around readily
available, low cost components. It is easy to fabricate. A total of 250
LEDs will be used to display the message “GREAT NIGERIAN STUDENTSâ€
1.2 Statement of the Problem
Due to limitation of the sign board or local sign board which could not
display clearly at night expect light shines on it, it is then
necessary that electronic display system is employed to counter the
limits of the local sign board. The information displayed on the local
sign board is less attractive compared to the information displayed
using electronic digital display system.
Thus, researchers
are prompted to tirelessly hold up to these challenges by initiating
some means of improving the above among which is the design and
construction of an electronic digital display system.
1.3 Objectives of the Study
The main objective of this study is to design and construct an
electronic digital display system. Specifically this study will achieve
the following:
i To display “Great Nigerian studentsâ€
ii To use the electronic digital display system constructed as a sign post for federal polytechnic, Oko.
iii To have more knowledge on what electronic digital display system is all about.
v To know the benefits of electronic digital display system.
v To design and realize the moving message display panel.
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