Description: 1. With reset function 2. The red light flashes a red light 30 seconds à 6 seconds (1 second to eliminate second-liang-1) à 30 seconds the green light is bright yellow six seconds à à (a cycle) 3. 3, respectively on behalf of yellow red and green light-emitting diodes 4. in possession of a digital countdown display 5. clock input directly is not recommended the use of 1Hz, and the use of other high-frequency clock, for example, 1KHz.
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trafficlight.doc
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