Computer History Notes - Herong's Tutorial Notes - v3.13, by Herong Yang
What Is UNIX
This section provides a quick introduction of UNIX operating system, a multi-tasking and multi-user operating system.
What Is UNIX? - UNIX is a multi-tasking and multi-user operating system, originally developed on a PDP-11/20 computer by a team of AT&T Bell Labs employees, including Ken Thompson, Dennis Ritchie, Douglas McIlroy and Rudd Canaday in 1970.
UNIX was initially called "Unics", because it was based on a previous experimental operating system called "Multics".
The first version of UNIX was written in PDP-11/20 assembly language and had only two application programs: a text formatting program called "roff" and a text editor.
In 1973, UNIX was rewritten in the C programming language and became a portable operating system. Since them, UNIX has been ported to a wide range of computers.
Main features of UNIX operating systems:
The picture below shows a PDP-11/20 computer, on which UNIX was originally developed (Source: http://www.olddec.nl/).
Table of Contents
2002 - .NET Framework Developed by Microsoft
1995 - PHP: Hypertext Preprocessor Created by Rasmus Lerdorf
1995 - Java Language Developed by Sun Microsystems
1991 - WWW (World Wide Web) Developed by Tim Berners-Lee
1991 - Gopher Protocol Created by a University of Minnesota Team
1984 - X Window System Developed a MIT Team
1984 - Macintosh Developed by Apple Inc.
1983 - "Sendmail" Mail Transfer Agent Developed by Eric Allman
1979 - The Tcsh (TENEX C Shell) Developed by Ken Greer
1978 - Bash (Bourne-Again Shell) Developed by Brian Fox
1978 - The C Shell Developed by Bill Joy
1977 - The Bourne Shell Developed by Stephen Bourne
1977 - Apple II Designed by Steve Jobs and Steve Wozniak
1976 - vi Text Editor Developed by Bill Joy
1974 - Internet by Vinton Cerf
1972 - C Language Developed by Dennis Ritchie
1971 - FTP Protocol Created by Abhay Bhushan
►1970 - UNIX Operating System Developed by AT&T Bell Labs
Command Interpreters and Command Pipelines