ETYM AS. and; akin to OS. endi, Icel. enda, Old High Germ. anti, enti, inti, unti, German und, Dutch en, OD. ende. Cf, An if, Ante-.<br /> 1. A particle which expresses the relation of connection or addition. It is used to conjoin a word with a word, a clause with a clause, or a sentence with a sentence.
2. In order to; -- used instead of the infinitival to, especially after try, come, go.

(Advanced Digital Network)
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. See the table.