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The DHT11 is a digital component with its own digital communication protocol. Analog pins can be used for either analog input or digital input and output. You can use a digital device like the DHT11 on any pin, whether it is labelled analog or digital (except on a couple of boards which have a few analog-only pins).


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You cannot do what you are trying to do. There is no direct correspondence between some number of bits and a decimal digit. With hexadecimal, every 4 bits corresponds to exactly 1 hex digit. That is why hex is used for computers. One hex digit represents exactly 4 bits. Every time you add another hex digit, you add 4 bits. Two hex digits corresponds to ...


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