A from z
Composed of letters and numbers
'Alpha' refers to letters. You may recognize it from 'Alphabet'. Numeric refers to numbers. Alpha + Numeric = Alphanumeric, or a list of figures that include both letters and numbers.
It is 80903, exactly as in the question.
To write 3 alpha characters and 1 numeric character, you can choose any three letters from the alphabet (A-Z) and combine them with a single numeric digit (0-9). For example, you could write "ABC1" or "XYZ7".
An alpha character is any letter from A-Z and a-z. Alpha numeric on the other hand is all letters and numbers, but neither allow other characters such as !@#$%^&*() etc.
Alpha numeric, containing letters & numbers
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.
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The four numeric systems are Roman, Alpha, Mayan, and Arabic.
Alpha-numeric .
A from z
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00.9
alpha-numeric digits
Composed of letters and numbers
alphanumeric