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The Circuit Diagram of Text-display Logic-pen Consists of Ga

2016-12-14 07:18  
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The Circuit Diagram of Text-display Logic-pen Consists of Gate Circuit  (CD4069) 1st
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.