System Requirements: 68000 processor or later, 2 MB of RAM, and 4 MB (10 MB with Open Transport) of hard disk space
Distribution Media: 800k or 1.44 MB Floppy disks
Apple Order Number: n/a
Versions: 7.1, 7.1.1, 7.1.2, 7.1.2P
History: System 7.1 introduced the new Fonts folder, allowing users to organize their fonts in the Finder. This was previously done in System 6 with an application called Font/DA Mover. The first major upgrade was System 7.1.1, also known as System 7 Pro. This release was basically a bundle of 7.1 with AppleScript tools, QuickTime and Apple Open Collaboration Environment (AOCE). While System 7 had troubles running in slightly older machines due to memory footprint, System 7 Pro would barely fit into even the most "loaded" machines of the era. Most users installed it for various minor fixes, ignoring the new functionality. Soon after the release of System 7, Apple joined the AIM alliance and started work on PowerPC-based machines that would later become the Power Macintosh series. Support for these machines resulted in System 7.1.2, which also included a number of fixes and new features. This was followed quite quickly with System 7.1.3, primarily a bug-fix release.
History Source: Wikipedia
History Source Address: http://en.wikipedia.org/wiki/System_7_%28Macintosh%29