Microprocessor based design of 4 way traffic light system

1. TRAFFIC
CONTROLLER
USING
MICROPROCESSOR 8085

3.  The project involves traffic control circuit
using 8085 microprocessor.
 Through software traffic of North-East-West-
South can be controlled
 In project traffic lights are LED’s,connected
to 8085 microprocessor with PPI
(Programmable Peripheral Interface) 8255 and
buffers.

4.  Here a model of traffic controller is prepared
that gives general idea about how Red, Green
and yellow lights can be controlled
 . It also helps to study the interfacing circuits
with 8085 microprocessor.
 8085 microprocessor can be mapped as
memory mapped and I/O mapped.

5.  This project involves study of I/O mapped
interfacing.
 In I/O mapping, I/P or O/P devices are
connected through 8255 PPI which has three
ports
 . In this project two ports are involved, to port
A indicating LEDs are connected and to port
B seven segments are connected.

6.  As 8085 microprocessor kit used,
programming is done in RAM and program is
in assembly language.

10. ADVANTAGE:
1.8085 SIMPLE PROCESSOR
2.TRAFFIC CONTROL USING WITHOUT MAN
3. IT IS AFFERT LESS.DUE TO INSTRUMENT.
4.IT IS LESS BULKY.

11. APPLICATION:
1.TRAFFIC SIGNAL CONTROLLING DIFFERENT PLACES.
2.WE ARE DONE MORE THAN ONE APPLICAYION USING
MICROPROCESSOR WITH SOFTWARE
.
3. LIKE TEMPERATURE CONTROLLER,BOILER
CONTROLLER,LEVEL CONTROLLER.ETC…..