The frequency of oscillation of 555 timer can be calculated by-ĬD4017 is a CMOS counter/ divider IC. You can vary the speed of oscillation with the help of VR1. In this circuit, NE555 astable generates a clock for the circuit, which provides an oscillating wave to the output pin 3 of IC1. This random number generator circuit is based on three IC’s namely NE555, CD4017 and CD4511 with few more components. 1: Prototype Of Random Number Generator Using 7 Segment Display CD4017 ICs are widely used in frequency dividers, binary counters, divide by N counters and register design applications and CD4511 which is a BCD to 7 segment decoder.įig. CD4017 which is a medium speed Johnson Counter that works at 10MHz and has 10 decoded outputs. Here 555 timer IC is wired as an astable oscillator which provide a clock pulse to CD4017 IC. It uses NE555 which is a well known multivibrator IC. This random number generator circuit can serve as an alternative that can be used to replace the traditional dice while playing games such as snake ladder, monopoly etc. It is very simple and easy to construct project which will display random numbers from 0 to 7 on a 7 segment display.
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