Toy electronic keyboard circuit
Source: InternetPublisher:失踪的猫 Keywords: Electronic keyboard BORDER WIDTH Updated: 2020/05/08
![Click to enlarge](http://www.eeworld.com.cn/circuit/upload/c793ae26e6baa791eebba68198e3ad1f/0ca61d0f4a9c3bee5143ea8344707c82.gif)
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