Macintosh II

Macintosh II. The Macintosh II, codenamed "Milwaukee", was a groundbreaking personal computer introduced by Apple Computer in 1987. It represented a radical departure from previous Macintosh models by being the first to feature a modular, expandable design without a built-in monitor. This machine was pivotal in establishing Apple's presence in the business and professional graphics markets, moving beyond the all-in-one aesthetic pioneered by the original Macintosh 128K.

Overview

The Macintosh II was unveiled at the AppleWorld conference in early 1987, marking a significant strategic shift for the company. Designed by the engineering team led by Michael Dhuey and others, it broke from the closed architecture of earlier models to compete more directly with the IBM Personal Computer/AT and emerging IBM PS/2 systems. Its open architecture supported a color display, a first for the Macintosh line, which was crucial for applications in desktop publishing, computer-aided design, and scientific visualization. The success of this model helped solidify the Macintosh platform's reputation for advanced graphics and user-friendly operating system software in professional environments.

Hardware

At the core of the Macintosh II was a Motorola 68020 central processing unit running at 16 MHz, paired with a Motorola 68881 floating-point unit for enhanced mathematical performance. Its most notable feature was the introduction of six NuBus expansion slots, providing an open standard for adding capabilities like advanced graphics, networking, and additional storage. The system used a SCSI interface for connecting peripherals such as hard drives and scanners, and it supported up to 68 MB of RAM via its dedicated memory expansion slots. For display, it relied on a separate video card plugged into a NuBus slot, supporting resolutions up to 640x480 with color depths from 1-bit to 8-bit, making it compatible with monitors like the AppleColor High-Resolution RGB Monitor.

Software

The Macintosh II shipped with System Software 4.0, which introduced support for color, multiple monitors, and the expanded memory architecture. This system software evolved through versions like System 6 and was fully compatible with System 7. Key applications that leveraged its power included Adobe Photoshop, Aldus PageMaker, and Microsoft Excel, which benefited from the machine's color capabilities and faster processing. The operating system's MultiFinder feature allowed for cooperative multitasking, enhancing productivity. Development tools from companies like Symantec and Metrowerks also emerged, enabling software creators to build more powerful applications for the new hardware platform.

Models

The original Macintosh II (Model M0001) was followed by several iterative and specialized models that shared its core architecture. The Macintosh IIx succeeded it in 1988, featuring a faster Motorola 68030 processor. Other notable variants included the Macintosh IIcx, a more compact version, and the Macintosh IIfx, a high-performance model known as "the fastest Mac" for its speed. The Macintosh IIci offered improved graphics and a lower cost, while the Macintosh IIsi was a budget-oriented model. This family also included the Macintosh IIvx and the workgroup-oriented Macintosh IIvi, extending the platform's lifespan into the early 1990s before the transition to PowerPC processors.

Reception and legacy

Upon its release, the Macintosh II received critical acclaim from publications like Macworld and InfoWorld for its power, expandability, and color graphics, though its high price was noted as a barrier for some users. It won immediate adoption in fields such as desktop publishing, graphic design, and education, helping Apple secure a strong foothold in the professional market. The Macintosh II's modular NuBus architecture influenced subsequent Apple designs for years, including the Macintosh Quadra series. Its success demonstrated that the Macintosh platform could evolve beyond its original consumer-focused vision, setting the stage for future innovations and cementing its legacy as a foundational model in the history of personal computing.

Category:Macintosh Category:Apple Inc. hardware Category:Computer-related introductions in 1987