It first appeared in 2001 A Space Odyssey, where HAL (Heuristically programmed ALgorithmic computer) is an artificial intelligence that controls the systems of the Discovery Onespacecraft and interacts with the ship's astronaut crew. Being a computer, HAL has no distinct physical form, though is visually represented as a red television camera eye located on equipment panels throughout the ship.
HAL 9000 is voiced by Douglas Rain in the two film adaptations of the Space Odyssey series. HAL speaks in a soft, calm voice and a conversational manner, in contrast to the crewmen, Dave Bowman and Frank Poole, who speak tersely and with little emotional inflection.
