CHAPTER ONE1.0    INTRODUCTIONThe purpose of this project is to produce a narrative description of the design and construction of an electronic display board. Firstly the computer-aided design is the modeling of the physical systems on computers allowing both interactive and automatics analysis of design variants and the expression of design in a form suitable for manufacturing. This follows by explaining the electronics display board as a device that is fast gaining wide acceptance and application in the present days due to its ability to provide a very high precision timing. This can be described as an electro-mechanical system for processing information in which the information is represented by physical quantities, which are so constrained to take only discrete values that can be referred to as binary signals.In this design, we have implored the use of both hardware and software to bring about the entire project. The hardware components are solely coordinated by the AT 89551 electronics display chip while the C-programming language is used to program the chip.1.1    OBJECTIVES OF THE PROJECTDepending on one’s intention, an electronics display board system has many aims and objectives. For instance, this one in particular aims at displaying a moveable coded letter that says “WELCOME TO SCHOOL OF ENGINEERING” also electronic display board system can be used to control the traffic minder standing among motorist especially injunctions, moreover, electronic scoreboard during football matches to used display when a goal is scored, also to display the name of that player who scored the goal, above all, this system has contributed a lot in boosting advertisement.1.2    PREAMBLESElectronics display board system is a system electronically designed and constructed, that is used to display different information to the view of the masses. The information to be displayed could be diagrams, symbols letters, colors, numbers, codes, etc depending on what is needed at a particular place and time. This, without doubt, has made life easier for people in different ways, however, the electronic display board, which is the heart of this system, can be described thus: an electronic display is a computer. All computers whether we are talking personal desktop computer you are using is a general-purpose computer that can run any of thousands of programs. Electronic n-display is a special purpose computer Electronics display does one thing well, there are a number of other common characteristics, that defined electronic display if a computer matches a majority of these characteristics, then you can call it an electronics display.    Electronics displays are embedded inside some other devices (often a consumer product) so that they can control the features or action of the product. Another name for an electronics display, therefore, is an embedded display.    Electronic displays are dedicated to one task and run one specific program. The program is store in Read-Only Memory (ROM) and generally does not change. Electronics displays are often low-power devices. A desktop computer is almost always plugged into a well sucked and might consume 50watt of electricity. A battery-operated electronics display might consume 50mw.    An electronics display has a dedicated input device and often (but not always) has a small LED or LED display for output. An electronics display also takes from the devices it is controlling and control device, meanwhile, the use of an electronics display board to implement an electronics display system design made up of LED connected in common cathode matrix form is referred to as electronic display board programmable DOT matrix information display system.  This project design is a welcome complement that “SCHOOL OF ENGINEERING”1.3    JUSTIFICATION OF THE PROJECTDue to the various problems encountered in the manual/analysis design and construction of signpost for advertisement, there is every need for an automated electronics display system that will solve this problem. This will ensure that viewers get adequate information that is displayed in good and attractive colors. Though the manual/analog way of displaying information to the view of the people is still targeted viewers are attracted. The height is which advertisements in Nigeria have attained will be maintained if some of its design/construction operations are computerized (electronics display board) especially the ones that have to do with bigger companies. This will also maintain a good relationship between the company and its numerous customers.1.5    SCOPE OF THE PROJECTThis project can serve in any aspect of life; this project (electronics display board) is a board on a computer-aided design. In the implementation of this project. The scope that shall concentrate more on is: the architecture of the electronics display port interface, multiplexing the data port control sequence, and algorithm of the traffic light. The features of the AT89551 were exploited to achieve the desired sequence of operation of this project.1.6    CONSTRAINTS OF THE PROJECTOne of the obvious constraints I had in the course of this project was the security of sometimes outright. Unavailability of some of the required components in the markets. Since scarcity is followed by a high in price, when such components were even found, they were out lightly expensive. Another major constraint I had a relatively short time to sources out the materials from the net, libraries, etc. fully understand the underlying principles and come up with a design that would work as a result, I had to forgo pleasure and even leisure in order to achieve this.


This chapter will give an insight into the meaning of the electronic display board system, the ways by which could be achieved, here some discrete components such as resistors, capacitors, and transistors with integrated circuits (IC) were used to make this work and its wiring easier to understand. By the end of this chapter, one would stand a better chance of having an understanding of what electronics display board system is all about, taking all the components used one after the other. 2.1    ORIGIN/HISTORY OF THE PROJECT The project, electronics display board system began as commercial electronic publishing (electronic display) which started in the mid-1970s with the development of databases of scientific, legal, and business information. These were used mainly by information specialists in large companies and universities and ran on mainframe computers or minicomputers. Few small businesses or people at home used forms of electronic publication, since the information itself was too specialized, and the software and hardware needed to access it was too expensive. The consumer market for electronic publishing (electronic display) really began with the development of GUIs and the CD-ROM in the late 1980s. Some industry commentators expected that CD-ROM publishing would revolutionize the publishing industry, but the market for CD-ROMs has been slow to develop. With the exception of encyclopedia and journal publishing, the changes to the publishing industry brought about by electronic publishing have been fairly limited so far. Some designers who adopted the new technology as soon as it appeared found that the market was too small, and consequently they had to scale down their electronic-publishing activities. Designers who were initially too conservative, however, have found it hard to catch areas as a reference, where the electronic display could have benefited them. Although most designers own the rights to a great deal of text and images, these are often not held in digital format and have to be changed into machine-readable form before being published electronically. Text and images must then be marked up with some form of tagging so that they can be accessed and manipulated. 2.2    TECHNOLOGY OF ELECTRONICS DISPLAY 2.2.1           Optics and Lighting In the mid-1990s, cost-effective traffic light lamps using light-emitting diodes (LEDs) were developed; prior to this date traffic lights were designed using incandescent or halogen light bulbs. Unlike the incandescent-board lamps, which use a single large bulb, the LED-board lamps consist of an array of LED elements, arranged in various patterns. When viewed from a distance, the array appears as a continuous light source.




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