Multivac is the name of a fictional computer in many stories by Isaac Asimov from 1955 to 1975. According to his autobiography In Memory Yet Green, Asimov coined the name in imitation of UNIVAC, the early mainframe computer. While he initially intended the name to stand for "Multiple vacuum tubes", his later story "The Last Question" expands the -ac suffix as "analog computer". Isaac Asimov, Ph. ... 1955 (MCMLV) was a common year starting on Saturday of the Gregorian calendar. ... 1975 (MCMLXXV) was a common year starting on Wednesday. ... UNIVAC I Central Complex, containing the central processor and main memory unit. ... In electronics, a vacuum tube (U.S. and Canadian English) or (thermionic) valve (outside North America) is a device generally used to amplify, or otherwise modify, a signal by controlling the movement of electrons in an evacuated space. ... The Last Question (1959), is a short story by science fiction author Isaac Asimov. ...

Like most of the technologies Asimov describes in his fiction, Multivac's exact specifications vary among appearances. In all cases, it is a government-run computer, buried deep underground for security purposes; however, Asimov never settles on a particular size for the computer or the supporting facilities around it. Unlike the artificial intelligences portrayed in his Robot Series, Multivac's interface is mechanized and impersonal, consisting of complex command consoles few humans can operate. // Hondas intelligent humanoid robot AI redirects here. ... Isaac Asimovs Robot Series is a series of books by Isaac Asimov, both collections of short stories and novels. ...

Story lines

In the first Multivac story, "Franchise", Multivac chooses a single "most representative" person from the population of the United States, whom the computer then interrogates to determine the country's overall orientation. All elected offices are then filled by the candidates the computer deems acceptable to the populace. Asimov wrote this story as the logical culmination— and/or possibly the reductio ad absurdum—of UNIVAC's ability to forecast election results from small samples. This article or section does not cite its references or sources. ...

In possibly the most famous Multivac story, "The Last Question", two slightly drunken technicians ask Multivac if humanity can reverse the increase of entropy. Multivac fails, displaying the error message "INSUFFICIENT DATA FOR MEANINGFUL ANSWER". The story continues through many iterations of computer technology, each more powerful and ethereal than the last: Microvac, Galactic AC, Universal AC, and finally Cosmic AC. Each of these computers is asked the question, and each returns the same indecisive response, until the heat death of the Universe makes all life impossible. Then, the Cosmic AC determines the answer by correlating all data accumulated over ten trillion years in all possible relationships, and sparks the universe anew. The Last Question (1959), is a short story by science fiction author Isaac Asimov. ... In thermodynamics, entropy, symbolized by S, is a state function of a thermodynamic system defined by the differential quantity , where dQ is the amount of heat absorbed in a reversible process in which the system goes from the one state to another, and T is the absolute temperature. ... The heat death is a possible final state of the universe, in which it has run down to a state of no free energy to sustain motion or life. ...

Multivac bibliography

Asimov's stories featuring Multivac:

• "Franchise" (1955)
• "Question" (1955)
• "Jokester" (1956)
• "The Last Question" (1956)
• "All the Troubles of the World" (1958)
• "The Machine that Won the War" (1961)
• "Key Item" (1975)
• "The Life and Times of Multivac" (1975)
• "Point of View" (1975)

Franchise is a science fiction short story by Isaac Asimov. ... Question is a short story by Isaac Asimov. ... Jokester is a science fiction short story by Isaac Asimov. ... The Last Question (1959), is a short story by science fiction author Isaac Asimov. ... All the Troubles of the World is a science fiction short story written by Isaac Asimov. ... The Machine that Won the War is a science fiction short story by Isaac Asimov. ... Key Item is a science fiction short story by Isaac Asimov. ... The Life and Times of Multivac is a science fiction short story by Isaac Asimov. ... Point of View is a short story by Isaac Asimov. ...

Multivac Technologies

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