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1. 合力推出 UNIX 和 C 的 Buddy: Ken Thompson 和 Dennis Ritchie
Unix History
Unix was developed in 1969 by Ken Thompson and Dennis Ritchie at AT&T, who scaled down the sophisticated, multiuser MULTICS operating system for Digital's PDP-7. The Unix name was coined as a single-processor version of MULTICS (un meaning "one" and ix from the "ics" in MULTICS). By 1974, Unix had matured into an efficient operating system mostly on PDP machines and became popular in scientific and academic environments.
Considerable enhancements were made to Unix at the University of California at Berkeley, and versions of Unix with the "Berkeley extensions" became widely used. By the late 1970s, commercial versions became available, such as IS/1 and XENIX.
In the early 1980s, AT&T consolidated the many Unix versions into System III and, later, System V. Before Divestiture in 1984, AT&T licensed Unix to universities and other organizations, but was prohibited from marketing it. After Divestiture, it changed course, and by 1989, had formed the Unix Software Operation (USO) division. USO introduced System V Release 4.0 (SVR4), incorporating XENIX, SunOS, Berkeley 4.3BSD and System V into one Unix standard defined by the System V Interface Definition (SVID). In 1990, AT&T spun off USO into Unix System Laboratories, Inc. (USL). In 1993, Novell acquired the System V source code from USL, and sold it to The Santa Cruz Operation (SCO) a year later. At the same time, Novell transferred the Unix trademark and the specification that later became the Single UNIX Specification to X/Open (now The Open Group).
The Origin of C
C was developed to allow Unix to run on a variety of computers. After Bell Labs' Ken Thompson and Dennis Ritchie created Unix and got it running on several PDP computers, they wanted a way to easily port it to other machines without having to rewrite it from scratch. Thompson created the B language, which was a simpler version of the BCPL language, itself a version of CPL. Later, in order to improve B, Thompson and Ritchie created C.
Dennis Ritchiie:
Ken Thompson:
Unix History
Unix was developed in 1969 by Ken Thompson and Dennis Ritchie at AT&T, who scaled down the sophisticated, multiuser MULTICS operating system for Digital's PDP-7. The Unix name was coined as a single-processor version of MULTICS (un meaning "one" and ix from the "ics" in MULTICS). By 1974, Unix had matured into an efficient operating system mostly on PDP machines and became popular in scientific and academic environments.
Considerable enhancements were made to Unix at the University of California at Berkeley, and versions of Unix with the "Berkeley extensions" became widely used. By the late 1970s, commercial versions became available, such as IS/1 and XENIX.
In the early 1980s, AT&T consolidated the many Unix versions into System III and, later, System V. Before Divestiture in 1984, AT&T licensed Unix to universities and other organizations, but was prohibited from marketing it. After Divestiture, it changed course, and by 1989, had formed the Unix Software Operation (USO) division. USO introduced System V Release 4.0 (SVR4), incorporating XENIX, SunOS, Berkeley 4.3BSD and System V into one Unix standard defined by the System V Interface Definition (SVID). In 1990, AT&T spun off USO into Unix System Laboratories, Inc. (USL). In 1993, Novell acquired the System V source code from USL, and sold it to The Santa Cruz Operation (SCO) a year later. At the same time, Novell transferred the Unix trademark and the specification that later became the Single UNIX Specification to X/Open (now The Open Group).
The Origin of C
C was developed to allow Unix to run on a variety of computers. After Bell Labs' Ken Thompson and Dennis Ritchie created Unix and got it running on several PDP computers, they wanted a way to easily port it to other machines without having to rewrite it from scratch. Thompson created the B language, which was a simpler version of the BCPL language, itself a version of CPL. Later, in order to improve B, Thompson and Ritchie created C.
Dennis Ritchiie:
Ken Thompson:
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