"A logical operation combining the values of two bits (0, 1) or two Boolean values (false, true) that returns a value of 1 (true) if both input values are 1 (true) and returns a 0 (false) otherwise. "
and
Base terminology
Use "and" instead of &, unless part of a proper noun or a common abbreviation. For example: Notices and slips, not Notices & slips; Baker & Taylor, R&D.