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An electronic dice is a classic first project for those getting interested in electronics. A timer, counter and a few LEDs makes a circuit that can also add a new twist to some old boring board games. When the switch is pressed, a 555 timer in astable mode pulses a BCD counter which lights up a series of LEDs wired to mimic a dice. Two AND gates are used to reset the count back to one whenever the BCD output is seven. Thus, the circuit is not truly random but the natural bounce present in a pushbutton and the normal human ability to operate much slower then the oscillator make the output of the circuit seem random.
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|r u stupid kid theres 7 LED's because you arrange them like the face of a die to make the numbers appear like they do on the face of a die
|why 7 led's for 6 numbers?
|Wow I just constructed this circuit in tina circuit Simulator and it works perfect
|I believe that the pin 7 on IC LS192 that is pulled to VCC should be left open and pin 15 should be set to VCC instead. Please note that pin 7 is an output and that Pin 15 is the least significant input digit.
|Dice is plural, if you've only got one of them it's a die.Anyone heard the expression "The die is cast" ?
|Dear Anonymous of Monday, May 03, 2010. Is that a question. Well, if you look at the diagram, it says he is using 5v, so any capacitor of 6v an more is adequate. Just make sure you have a regulated 5v power supply. for anonymous saturday, september 26, 2009. Obviously not enough! I have bought them many times over on eBay, nice and safely using paypal! yes, it is that easy. You register with paypal, using either your bank account (dependant on country) or a credit / debit card. Simple.
|HELP!!! i have done this circuit, but only output number 1,2,3,6... the 4 and 5 is missing...
|How many volts are the capacitors?
|i think and gate is 74ls08.
|Where can I buy the 4 bit counter and the AND gate IC's? I have looked everywhere!
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