CONSTRUCTION OF MOVING MESSAGE DISPLAY USING MICROCONTROLLER
Abstract
The objective of our project is to design and simulate a 3-character dot-matrix moving message display using microcontroller, where the characters shift from left to write continuously. In this project we have used ATMega8 microcontroller. ATMega8 is a family of 8-bit microcontrollers. It has a maximum rated processor frequency of 16MHz. The ATMega8 lends itself extremely well to prototyping due to its simple requirement of a 4.5V-5.5V power source. For shifting the characters from left to right, we have used a 74HC595 shift register. It is a 8-bit serial in, serial or parallel output. It has a shift out frequency of around 100MHz and storage register of 3-stage output and finally we have used 8×8 dot-matrix display. The simulation can be performed by only ISIS simulator. In this case we have used Proteus Design Suite 7. At first a code was developed in C. then it was implemented in the simulator. And we got our desired result there. Our design was ready for practical implementation. But because of the lack of proper hardware support we were unable to implement the design.
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