In Unicode the capital V is codepoint U+0056 and the lowercase v is U+0076.
The ASCII code for capital V is 86 and for lowercase v is 118; or in binary 01010110 and 01110110, respectively.
The EBCDIC code for capital V is 229 and for lowercase v is 165.
The numeric character references in HTML and XML are "V" and "v" for upper and lower case respectively.
[edit] See also