u use a pencil and paper
alpha numeric refers to the keypad on your cell phone...it is the keypad which has numbers and letters of the alphabet-thus alpha being the alphabet and numeric being the numbers.
ruby
The four numeric systems are Roman, Alpha, Mayan, and Arabic.
A from z
Alpha-numeric .
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Composed of letters and numbers
alpha-numeric digits
Alpha-numeric .
alphanumeric
00.9
Group1 is considered Alpha-Numeric because it has both alphabet characters and numeric characters.