Another question is I don't fully understand when I read in the text: "signed integers" and "unsigned bytes". Can you explain me more about that? Specially the part of signed/unsigned information because I don't know what difference there is between an unsigned and a signed byte.
Signed Integers = A value that can hold information negative of 0 (-32768) and positive of 0 (+32768)
Unsigned Bytes = the Numbers range Positive only 0 to 255. No Negative/below -255