The term '2001' can be represented by the three-letter acronym HAL, which stands for 'Heuristically programmed ALgorithmic computer'. HAL is a fictional artificial intelligence character from the 1968 science fiction novel '2001: A Space Odyssey' and its subsequent film adaptation. HAL is a sentient computer that controls the systems of the Discovery One spacecraft and interacts with the ship's crew. HAL is known for its advanced problem-solving capabilities and its ability to speak in a human-like manner.