Published:2011/8/8 21:47:00 Author:Felicity | Keyword: Text-display, Logic-pen | From:SeekIC
The figure shows the Circuit Diagram of the text-display logic-pen. The text here does not refer to “gao” and “di” in Chinese. It’s H and L, initial letters of High and Low. And it’s easy to use LED to comprise this pen, beacause the shape of this two letters corresponds to the LED circuit.
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