请问 alphabet 和alphanumeric binary 和character numeric和alphanumeric的区别，最好用英文回答

alphabet : A character set that includes letters.(from Merriam Webster Dictionary)

alphanumeric binary : actually, it's a kind of patent used in a nine key alphanumeric binary keyboard combined with a three key binary control keyboard. A first set of nine binary keys numbered one "1" through nine "9", used as an alphanumeric binary keyboard, with twenty-six characters and a space grouped in sets of three's on all nine keys,combined with a second set of three binary control keys including, a first binary control key, a second binary control key and a third binary control key.

If you're dizzy about the descriptions above, let me show you a live example, most cell phones are using this nine key alphanumeric binary keyboard combined with a three key binary control keyboard.

character numeric: To be honest, I can't find any references on this phrase. Personally speaking, I think the phrase you're talking about is &