Knowledge center. Albinism is a genetic condition also called achromia, achromasia, or achromatosis. It is characterized by a deficit in the production in melanin and by the partial or complete absence of pigment in the skin, hair and eyes.
Alpha stands for alphabets and numeric stands for number. So a non alpha numeric character will be any symbol without letters (alphabets) or numbers. As you are aware, an upper case means capital letter. e.g., A, B, C, etc. and a lower case are small letters: a, b, c, etc. So out of the 8 number of characters, you were asked to use at least. one capital letter.
all alphanumeric characters are is all the letters and numbers on a keyboard that can be used to make up a password, email or something in that manner.ll alphanumeric means is a mix of letters (alpha, as in alphabet)  and numbers (numeric, as in numerals). An example would be  3443jsn22s. + 357 others found this useful. Ernest Mokaya.