Fernando J. Corbató

Fernando J. Corbató
Name	Fernando J. Corbató
Birth date	July 1, 1926
Birth place	Pasadena, California
Death date	July 12, 2019
Death place	Newburyport, Massachusetts
Fields	Computer science
Workplaces	Massachusetts Institute of Technology, MIT Lincoln Laboratory, Project MAC
Alma mater	California Institute of Technology, Massachusetts Institute of Technology
Known for	Time-sharing, CTSS, Multics

Fernando J. Corbató

Fernando J. Corbató was an American computer scientist renowned for pioneering work in interactive computing and time-sharing. He led the development of the Compatible Time-Sharing System and played a central role in the Multics project, influencing subsequent operating system designs and concepts used by researchers and companies worldwide.

Early life and education

Corbató was born in Pasadena, California, and attended schools in Pasadena, California and Los Angeles, California. He studied physics and electrical engineering at the California Institute of Technology before earning a doctorate at the Massachusetts Institute of Technology under advisors connected to projects at MIT Lincoln Laboratory and work related to the Whirlwind computer. His early academic path intersected with figures from J. Presper Eckert, John Mauchly, and contemporaries at Harvard University and Princeton University who influenced postwar computing research.

Career and contributions

At MIT, Corbató joined MIT Lincoln Laboratory and later became a professor in the Department of Electrical Engineering and Computer Science at Massachusetts Institute of Technology. He directed research associated with Project MAC, collaborating with scientists from Bell Labs, General Electric, IBM, and institutions like Stanford University and Carnegie Mellon University. His work connected with teams led by Joseph Licklider, Claude Shannon, Norbert Wiener, and engineers from RAND Corporation on time-sharing, human–computer interaction, and resource scheduling. Corbató supervised students who later worked at Digital Equipment Corporation, DEC, Microsoft, Apple Inc., and Bell Laboratories and influenced standards adopted by IEEE and protocols later used by DARPA.

Development of time-sharing and CTSS

Corbató led the creation of the Compatible Time-Sharing System (CTSS) at MIT in collaboration with programmers from Project MAC, MITRE Corporation contributors, and staff associated with the Semi-Automatic Ground Environment era computing community. CTSS ran on computers such as the IBM 7094 and IBM 7090 and incorporated features echoing work at Bell Labs and research at Stanford Research Institute. CTSS introduced innovations like password authentication, file system concepts, and interactive terminals, influencing operating systems at UNIVAC, Honeywell, and early Digital Equipment Corporation machines. The CTSS team exchanged ideas with researchers from University of California, Berkeley, University of Cambridge, and Royal Radar Establishment personnel who were exploring time-sharing and multiprocessing.

Multics and subsequent work

Building on CTSS, Corbató was a principal investigator for the Multics project, a collaborative effort involving MIT, General Electric, and Bell Labs. Multics introduced hierarchical file systems, dynamic linking, and security concepts that later informed systems at Bell Labs leading to the creation of Unix by Ken Thompson and Dennis Ritchie. Multics influenced designs at Honeywell, GE, and research groups at Carnegie Mellon University and Stanford University, and its ideas permeated projects funded by ARPA and agencies like National Science Foundation. After Multics, Corbató continued teaching at MIT, advising students who contributed to projects at Sun Microsystems, HP, and open source communities that led to Linux and other modern systems. He remained active in discussions with scholars from Princeton University, Yale University, and international conferences including SIGCOMM and ACM symposia.

Awards and honors

Corbató received recognition from organizations such as Association for Computing Machinery, which awarded him the Turing Award, and honors from IEEE and the National Academy of Engineering. He was elected to the National Academy of Sciences and received medals and fellowships linked to institutions like American Association for the Advancement of Science and universities including Harvard University and University of California, Berkeley. He delivered keynote lectures at gatherings of the Computer History Museum, ACM SIGOPS, and panels organized by NSF and DARPA.

Personal life and legacy

Corbató lived in the northeastern United States later in life and maintained ties with colleagues at MIT, Harvard University, and the broader research community that included participants from Bell Labs, IBM Research, and Digital Equipment Corporation. His legacy endures in operating system curricula at Massachusetts Institute of Technology, textbook treatments at Prentice Hall and Addison-Wesley, and in the work of engineers at companies like Microsoft, Apple Inc., Google, and Amazon. Historical treatments of his work appear in archives at the Computer History Museum, oral histories at IEEE History Center, and retrospectives in journals published by ACM and IEEE Computer Society. His influence is acknowledged in awards, curricula, and memorials hosted by institutions including MIT and the National Academy of Engineering.

Category:1926 births Category:2019 deaths Category:American computer scientists Category:Massachusetts Institute of Technology faculty