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.
1 Numeric parsing will automatically handle a â0bâ, â0oâ or â0xâ prefix. 2  That is, the â#â format character is handled automatically by d, b, o and x formats. 3  For âdâ any will be accepted, but for the others the correct prefix must be present if at all. 4  Numeric sign is handled automatically.