தொலைத்தொடர்பு அமைப்பு மற்றும் மேலாண்மை

Design and Implementation of Dot Matrix Display System

Abstract

Oladimeji Tolulope Tunji and Idowu OD

In today’s rapidly advancing technology market, most conventional digital display system is now being implemented using individual logic gates and integrated circuits such as microprocessor and microcontroller chips which contain the circuitry necessary to create logic functions are being used to implement digital systems, The advent of new technologies has made information in form of electronic display in the world of advertisement and promotion. The LED dot matrix display is a display system which is used in information dissemination to larger number of audience within the location which it is situated. It has three sections; power, control and display. This which could be grouped into two main part; the hardware and software. The display system physically conveys set of programmed data on the controller card, the hardware part comprises of numbers of LED module, power supply module, controller card and the casing. The software part is the part on the controller card that stores the received programmed data. It uses a volatile memory which allows reprogramming and memory formatting for maximum of 1000 times. The casing of the display system comprises of rectangular screwed and riveted aluminium rod, ACO Board and transparent plastic which covers it both in the front and back. The system switches on automatically whenever it is plugged to the AC supply and it has a minimum efficient life span of 50,000 hours and a maximum viewing angle and distance of 140 degrees and 25 metres.