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This project is an electronic dice. It consists of seven LEDs positioned like a dice which light up to show the number.
The leds are controlled by a 74HC4017 decade counter IC. Of this IC six outputs are used to drive the LEDs and a seventh output is used to reset the counter. This way it only counts up to six. To light up the correct LEDs, diodes are used. These block the current in one way so other outputs of the IC aren’t affected when LEDs are connected to multiple outputs.
Simple Electronic dice – [Link]
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