Traffic light controller design and implementation is mainly by writing assembly language programs using 8255A and 8253 pairs of bright light and time control and eradication. First of all, to understand that the 8255A and 8253 is how to work, including its A port, B port, C port and control port is how to write the data and how to use 8253 timer to control the conversion time.

trafficlight.doc

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