(1) See
anti-aliasing.
(2) (
Auto
Answer) See
modem.
(3) A telephone answering system with voice prompts. See
automated attendant.
(4) (Double A) A common single-cell battery used in myriad devices from flashlights to electronic equipment of all variety. Like its triple A (AAA) cousin, it provides 1.5 volts of DC power. When used in series, the voltage is multiplied. For example, four AA batteries yield 6 volts.