Apple II Series

The Apple II series (trademarked with square brackets as "Apple ] designed primarily by Steve Wozniak, manufactured by Apple Computer (now Apple Inc.) and introduced in 1977 with the original Apple II. In terms of ease of use, features and expandability the Apple II was a major technological advancement over its predecessor, the Apple I, a limited-production bare circuit board computer for electronics hobbyists that pioneered many features that made the Apple II a commercial success. Introduced at the West Coast Computer Faire on April 16, 1977, the Apple II was among the first successful personal computers; it launched the Apple company into a successful business (and allowed several related companies to start). Throughout the years, a number of models were sold, with the most popular model remaining relatively little changed into the 1990s. It was first sold on June 10, 1977. By the end of production in 1993, somewhere between five and six million Apple II series computers (including about 1.25 million Apple II models) had been produced.

The Apple II became one of several recognizable and successful computers during the 1980s and early 1990s, although this was mainly limited to the USA. It was aggressively marketed through volume discounts and manufacturing arrangements to educational institutions which made it the first computer in widespread use in American secondary schools. The effort to develop educational and business software for the Apple II, including the 1979 release of the popular VisiCalc spreadsheet, made the computer especially popular with business users and families.

The original Apple II operating system was contained in ROM along with Integer BASIC. Programs were entered, then saved and loaded on cassette tape. When the Disk II was implemented in 1978 by Steve Wozniak, a Disk Operating System or DOS was commissioned. The final and most popular version of this software was Apple DOS 3.3. Some commercial Apple II software booted directly and did not use standard DOS formats. This discouraged the copying or modifying of the software on the disks and improved loading speed. Apple DOS was superseded by ProDOS, which supported a hierarchical filesystem and larger storage devices. With an optional third-party Z80-based expansion card the Apple II could boot into the CP/M operating system and run WordStar, dBase II, and other CP/M software. At the height of its evolution, towards the late 1980s, the platform had the graphical look of a hybrid of the Apple II and Macintosh with the introduction of the Apple II. By 1992, the platform had 16-bit processing capabilities, a mouse-driven Graphical User Interface, and graphics and sound capabilities far beyond the original.

Despite the introduction of the Motorola 68000-based Apple Lisa system in 1983, and its more successful cousin the Macintosh in 1984, the relatively unsophisticated Apple II series was Apple's primary revenue source for most of the following decade. At its peak, it was a billion-dollar-a-year industry with its associated community of third-party developers and retailers. The Apple II was sold until the end of 1992; the last II-series Apple in production, the IIe, was discontinued on October 15, 1993.

Read more about Apple II SeriesDesign, Models, Advertising, Marketing, and Packaging, Clones, Timeline of Apple II Family Models

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