Orac
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Orac is a fictional character from the British science fiction television series Blake's 7, played by Peter Tuddenham.
Orac is a highly advanced "supercomputer" developed by the scientist Ensor, brought aboard the Liberator by Blake and the others at the end of the first series. Ensor was a particularly erascible character and Orac, as his creation, has inherited some of his character traits. It is extremely terse and short-tempered. Orac has the ability to communicate with all other computers that carry tarriel cells and hence provide the Liberator crew with valuable knowledge. Through calculation of probability, Orac can predict the future as seen in the series A cliffhanger episode also called Orac where it predicts the destruction of the Liberator. Orac's systems are multi-dimensional, it projects a carrier beam through the same dimension that allows telepaths to transfer thoughts. It is through the hijacking of this beam that an unnamed psychic being attempted to invade the physical plane. It was defeated through Cally's telepathy boosted by proximity to telepathic plants called Moondiscs. To prevent any future incursion by the being, Avon fitted a bomb to Orac that would detonate if its power fluctuated outside of its normal parameters.
Orac is presumably a contraction of Oracle.
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