THEORY OF LED DOT MATRIX DISPLAY

In a dot matrix display, multiple LEDs are wired together in rows and columns. This is done to minimize the number of pins required to drive them. For example, a 8×8 matrix of LEDs (shown below) would need 64 I/O pins, one for each LED pixel. By wiring all the anodes together in rows (R1 through R8), and cathodes in columns (C1 through C8), the required number of I/O pins is reduced to 16. Each LED is addressed by its row and column number. In the figure below, if R4 is pulled high and C3 is pulled low, the LED in fourth row and third column will be turned on. Characters can be displayed by fast scanning of either rows or columns.

Example of using Dot Matrix

Dot Matrix

Introduction of the purpose LED Display

EXAMPLE OF LED'S

UNIKL LOGO

The Logo display is used for commercial advertisement billboard. The unique Logo display is very attractive which can promote the brand of the products. Super bright LED with multi-colours are arranged to highlights the colours of the logo. A smart micro-controller is used to program animation algorithm for different animation features. This potential device has very unique commercial value for companies to promote their logo and products. The first proposed logo for this FYP would be UniKL.

This project is about to developing LED signs use a modular system, it’s suitable for a number of purposes. In most of cases though, the programmable LED signs are used for advertising reasons. Smaller businesses usually make use of this medium as their outdoor sign. Meanwhile, numerous savvy entrepreneurs buy advertising space in high traffic locations to be able to promote their businesses there.

It is also easy to understand the mechanics of using programmable LED signs. It’s a plug-and-play system so virtually anyone can do the installation given the right instructions.