Marc J. Rochkind invented the Source Code Control System

Source Code Control System

Source Code Control System is an early revision control system, geared toward program source code and other text files. It was originally developed in SNOBOL at Bell Labs in 1972 by Marc J. Rochkind for an IBM System/370 computer running OS/360 MVT...

 while working at Bell Labs

Bell Labs

Bell Laboratories is the research and development subsidiary of the French-owned Alcatel-Lucent and previously of the American Telephone & Telegraph Company , half-owned through its Western Electric manufacturing subsidiary.Bell Laboratories operates its...

, as well as wrote Advanced UNIX Programming, and founded XVT Software.

Source Code Control System

The Source Code Control System (SCCS) was the first modern revision control

Revision control

Revision control, also known as version control and source control , is the management of changes to documents, programs, and other information stored as computer files. It is most commonly used in software development, where a team of people may change the same files...

 system. SCCS was developed by Rochkind in 1972 at Bell Labs. By 1975 it was in wide use within Bell Labs and soon became a popular Software Configuration Management

Software configuration management

In software engineering, software configuration management is the task of tracking and controlling changes in the software. Configuration management practices include revision control and the establishment of baselines....

 tool in the computer industry. SCCS was the first revision control system to use deltas for the storage of revisions. SCCS was originally developed for the IBM 370

IBM 370

The IBM 370 printer was used on the IBM 305 RAMAC computer system, introduced by IBM on September 14, 1956. The 370 was connected to the 305 by a serial data line from the S track of the computer's drum memory and printed 80-columns with a punched tape controlled carriage...

 machine but quickly became a staple of UNIX

Unix

Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...

, beginning with the Programmer's Workbench

PWB/UNIX

The Programmer's Workbench was an early version of the Unix operating system created in the Bell Labs Computer Science Research Group of AT&T....

version of UNIX.