This Project Three Colour Display Using Bicolor Led is used to generate several designs of Running Lights. We use Eight Bi-color LED’s for display. The 8 bit Microprocessor is used to control all the operations. It control the LED’s though the Ports of PPI (Programmable Peripheral Interface) IC8255. The above system is monitored and controlled by the 8 bit microprocessor 8085A and using the Ports of 8255. The Microprocessor Switches on/off the LED’s according to the Program. The Power for the circuit is derived from the Step down transformer and the 5V regulator IC7805. The regulator IC produce a constant 5v output The Bicolor LED can display three colors such us Red, Green, Orange. So we can generate several patterns of Designs using the Microprocessor.
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