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The ethernet shield connects to an Arduino board using long wire-wrap headers which extend through the shield. This keeps the pin layout intact and allows another shield to be stacked on top. The latest revision of the shield adds a micro-SD card slot, which can be used to store files for serving over the network.

2 votes

Sending letter by letter to LCD, however the LCD knows the full string?

I think what you're seeing is the result of: lcd.print(lcdtext); and the fact that lcdtext is not null-terminated. print() is expecting a string, that is some sequence of zero or more non-'\0' chara …
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