Robert Fano

Robert Mario Fano (born 11 November 1917 in Turin, Italy, as Roberto Mario Fano) is an Italian-American computer scientist, currently professor emeritus of Electrical Engineering and Computer Science at Massachusetts Institute of Technology. Fano is known principally for his work on information theory, inventing (with Claude Shannon) Shannon-Fano coding and deriving the Fano inequality. In the early 1960s, he was involved in the development of time-sharing computers, and from 1963 until 1968 served as founding director of MIT's Project MAC, which evolved to become what is now known as the MIT Computer Science and Artificial Intelligence Laboratory.

Fano's father was the mathematician Gino Fano, his older brother was physicist Ugo Fano, and his cousin was Giulio Racah. He grew up in Turin and studied engineering as an undergraduate at the School of Engineering of Torino ( Politecnico Di Torino ) until 1939, when he emigrated to the United States as a result of anti-Jewish legislation passed under Benito Mussolini. He received his S.B. in electrical engineering from MIT in 1941, before joining the staff of the MIT Radiation Laboratory. After the war, he received an Sc.D., also from MIT, in 1947; his thesis, entitled "Theoretical Limitations on the Broadband Matching of Arbitrary Impedances", was supervised by Ernst Guillemin. He joined the MIT faculty in 1947. Between 1950 and 1953, he led the Radar Techniques Group at Lincoln Laboratory. In 1954, Fano was made an IEEE Fellow for "contributions in the field of information theory and microwave filters".

Incompatible Timesharing System

ITS (Incompatible Timesharing System), is an early and influential time-sharing operating system developed principally by the MIT Artificial Intelligence Laboratory, with help from Project MAC. The name is the jocular complement of the MIT Compatible Time-Sharing System (CTSS).

ITS, and the software developed on it, were technically influential far beyond their core user community. Remote "guest" or "tourist" access was easily available via the early ARPAnet, allowing many interested parties to informally try out features of the operating system and application programs. The software environment of ITS was a major influence on the hacker culture, as described in Steven Levy's book, Hackers.

History

ITS development was initiated in the late 1960s by those (the majority of the MIT AI Lab staff at that time) who disagreed with the direction taken by Project MAC's Multics project (which had started in the mid 1960s), particularly such decisions as the inclusion of powerful system security. The name was chosen by Tom Knight as a joke on the name of the earliest MIT time-sharing operating system, the Compatible Time-Sharing System, which dated from the early 1960s.

Fernando J. Corbató

Fernando José "Corby" Corbató (born July 1, 1926) is a prominent American computer scientist, notable as a pioneer in the development of time-sharing operating systems.

Career

Born in Oakland, California, Corbató received a bachelor's degree from the California Institute of Technology in 1950, and then a PhD in physics from the Massachusetts Institute of Technology in 1956. He joined MIT's Computation Center immediately upon graduation, became a professor in 1965, and stayed at MIT until he retired.

The first timesharing system he was associated with was known as the MIT Compatible Time-Sharing System (CTSS), an early version of which was demonstrated in 1961. Corbató is credited with the first use of passwords to secure access to files on a large computer system, though he now says that this rudimentary security method has proliferated and become unmanageable.

The experience with developing CTSS led to a second project, Multics, which was adopted by General Electric for its high-end computer systems (later acquired by Honeywell). Multics pioneered many concepts now used in modern operating systems, including a hierarchical file system, ring-oriented security, access control lists, single level store, dynamic linking, and extensive on-line reconfiguration for reliable service. Multics, while not particularly commercially successful in itself, directly inspired Ken Thompson to develop Unix, the direct descendants of which are still in extremely wide use; Unix also served as a direct model for many other subsequent operating system designs.

John McCarthy

John McCarthy may refer to:

Government

Humanity and science

Institute of technology

Institute of technology (also: university of technology, polytechnic university, technikon, and technical college) is a designation employed for a wide range of learning institutions awarding different types of degrees and operating often at variable levels of the educational system. It may be an institution of higher education and advanced engineering and scientific research or professional vocational education, specializing in science, engineering, and technology or different sorts of technical subjects. It may also refer to a secondary education school focused in vocational training. The term institute of technology is often abbreviated IT and is not to be confused with information technology.

The English term polytechnic appeared in the early 19th century, from the French École Polytechnique, an engineering school founded in 1794 in Paris. The French term comes from the Greek πολύ (polú or polý) meaning "many" and τεχνικός (tekhnikós) meaning "arts".

While the terms "institute of technology" and "polytechnic" are synonymous, the preference concerning which one is the preferred term varies from country to country.