Create LED Traffic Signal with Discrete Components

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mohdfasieh
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Hello Genius guys,
I am beginner in the field of electronics engineering.Well i am planning to make LED TRAFFIC SIGNAL /i know the wroking of 555 timer ic iknow the working of Multiplexer,Demultiplexer,encoder ,decoder. well can u tell me the circuit diagram of LED TRAFFIC signal 4 way traffic signal .

please tell me the ckt diagram .i want to make traffic signal by using discrete components.
thz
 
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