Automatic electronic road sign circuit
Source: InternetPublisher:奥特man123 Keywords: Sound control oscillation circuit Updated: 2021/10/29
The circuit of the automatic electronic road sign , a good companion of the road , is shown in the figure. It mainly consists of a voice control circuit, an oscillation circuit and a drive display circuit .
![Automatic electronic road sign circuit](http://www.eeworld.com.cn/circuit/upload/807723b6de9862674dfe0b45b165467e/64328a15ec67668e5875f79a0366cc18.jpg)
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