Martin Weiss's article

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blackson
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Martin Weiss's article

Post by blackson »

This is a question about Martin Weiss's schematic (page 55 in the latest issue). In particular, I do not understand how the indicator LEDs for the USART are supposed to work. Why doesn't the voltage RXD and TXD sees interfere with the USART functioning? I am new to this, so any help will be appreciated. Thanks so much.
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