Description: 1). With red, green, yellow three-color light-emitting diodes for lights. For the east-west trunk road, has red, green, yellow three lights support for the north-south trunk road, there are red, green, yellow three lights. Red light curfew green permit passage yellow light is to the moving vehicles have the time of call to cut outside the lane.
2). Because of the trunk road vehicles more vehicles and less trunk extension, so a longer green time of a main road. When the main road access permit a green light when the trunk road red sticks. Permit access roads and support a green light when the trunk road red, the two alternating repetition. Allowed 50 seconds for each trunk, branch trunk release each 30 seconds.
At each green light into red by the conversion process between the need for five seconds of yellow light as a transitional measure to enable the moving vehicles have the time of call to ban outside lane.
3). To achieve a normal, real-time display. Using DE2 four seventh
- [Verilog_example] - This document includes MUX device modeli
- [display] - vhdl, seven-segment digital tube driver,
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jiaotongdeng.txt
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