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 26
A from z
It means that in some place of the application any type of symbol is accepted - letters, numbers, spaces, special symbols.
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.
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.
The term alpha characters refers to those characters that are letters. This is in contrast with numeric characters, which are numbers.
Alpha numeric, containing letters & numbers
90
In the United States, ZIP codes are numeric because they contain only numbers. Postal codes in Canada, for comparison's sake, are alphanumeric, because they contain letters (alpha) and numbers (numeric).
it is 26
ruby
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.
"Numeric" means "related to numbers", so basically all numbers are "numeric".
The term numeric number is redundant. All numbers are numeric, since numeric means composed of numbers.