Blake's 7 - Season 1 - Eps 13: Orac
The Liberator crew fly to Aristo to deliver the supplies to Ensor, in exchange for radiation drugs and the computer Orac, which Ensor gives to Blake before he dies. Orac predicts the destruction of the Liberator.
About Blake's 7

Title: Blake's 7
First Air Date: 1978-01-02
Last Air Date: 1981-12-21
Status: Ended
Rating: 7.233/10 (from 43 votes)
Language: EN
Seasons: 5
Total Episodes: 52
Network: BBC One
Genres: Drama, Sci-Fi & Fantasy
Production Companies: BBC
Synopsis
A group of convicts and outcasts fight a guerrilla war against the totalitarian Terran Federation from a highly advanced alien spaceship.
Cast

Josette Simon
Dayna Mellanby

Michael Keating
Vila Restal

Paul Darrow
Kerr Avon

Peter Tuddenham
Slave / ORAC

Steven Pacey
Del Tarrant

Glynis Barber
Soolin