random number generator game


Posted on Feb 5, 2014

This electronic game is simulation of one-arm bandit game. Electronics hobbyists will find it very interesting. When toggle switch S1 is in run` position, all segments of 7-segment displays (DIS1 through DIS3) will light up. On turning toggle switch S1 from run` to stop` position, displayed digits will continue advancing and the final display is u


random number generator game
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npredictable. Thus the final number displayed in DIS1 through DIS3 is of random nature. The speed with which the number in 7-segment display keeps changing on flipping switch S1 from run` to stop` condition slowly decays before stopping with a random number display. To play this game, one has to obtain three identical numbers in displays DIS1 through DIS3. The contestant would score 1 (one) point if he manages to get a final display of 000`, 2 points for getting 111` display, 3 points for 222`, and so on ”up to ten points for 999`. He should try to score maximum possible points in fixed numbers of attempts (say, 20 to 25 attempts). Apart from using this circuit as a game for entertainment, one can use it as random number generator for any other application as well. The decay time with the given component values is around 15 seconds before the display could stop at a final random number. The circuit comprises clock oscillator built around NE555 timer IC4, three-stage clock pulse counter built using three CD4033 ICs (IC1 to IC3), and three 7-segment LED displays (DIS1 to DIS3). In clock oscillator circuit, NE555 timer IC4 is used in a similar way as a free-running astable multivibrator, the only difference being the additional capacitor C1 introduced between pin No. 7 of IC4 and junction of resistors R22 and R24. When toggle switch S1 is in run` position, both terminals of capacitor C1 are shorted by switch S1 and timer IC4...




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