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Mac operating systems

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{

"text": "An operating system is the essential software that manages a computer's hardware and allows users to interact with it. Apple Inc. has developed two major series of operating systems for its Macintosh computers.

Mac OS wordmark logo
Mac OS wordmark logo

The first series is known as the classic Mac OS. It debuted in 1984 alongside the original Macintosh System Software. This system was celebrated for being user-friendly and easy to navigate. However, it faced criticism for lacking modern technical capabilities. It struggled with memory management and lacked protected memory and access controls. These architectural limitations meant that software extensions could often cause system conflicts.\n\nTo resolve these deep technical challenges, Apple moved toward an entirely new architecture. Between 1997 and 2001, Apple developed a successor based on NeXTSTEP, which is a Unix-based system. This transition occurred after Apple purchased the company NeXT. This new foundation solved the memory management issues that plagued the classic version. The first version of this new era, Mac OS X, launched on March 24, 2001. It featured a new user interface called Aqua.

MacosxlogoX1
MacosxlogoX1

Over time, the name changed from Mac OS X to OS X, and finally to macOS in 2016.\n\nDespite the massive change in underlying architecture, both systems share a common Graphical User Interface (GUI). A GUI allows users to interact with the computer through visual elements rather than text commands. Both systems use a menu bar located across the top of the screen. They also utilize the Finder shell, which employs a desktop metaphor. This metaphor represents files and applications using icons. It relates digital actions to real-world objects, such as using folders for directories and a trash can for file deletion. This design also allows for overlapping windows to support multitasking.\n\nApple's path to the current macOS involved many experimental stages and failed attempts. Before Mac OS X, Apple released products like A/UX, which was a Unix-based system with a Mac interface. They also developed the Macintosh Application Environment (MAE) to run Mac apps on Unix workstations. Several high-profile projects were cancelled during the search for a replacement for the classic OS. One secret project, codenamed Star Trek, attempted to port the Mac OS to Intel-compatible computers in 1992. Another project, Taligent, was a joint venture with IBM that was eventually abandoned in 1995. Finally, the Copland project aimed to update the classic OS but was cancelled in 1996.\n\nThe history of Apple's software extends far beyond the Macintosh. Before the 1984 Macintosh, Apple released the Apple II in 1977, which ran Apple DOS and ProDOS. The Apple III arrived in 1980, running Apple SOS. In 1983, the Lisa computer was released with Lisa OS. Apple also developed the Newton OS for its Newton personal digital assistant between 1993 and 1997. The modern macOS architecture serves as the foundation for many other Apple devices. This includes iOS for the iPhone, iPadOS for the iPad, and watchOS for the Apple Watch. It also powers tvOS for Apple TV and the newer visionOS for the Apple Vision Pro mixed reality headset.\n\nApple has maintained a consistent schedule for software improvements in recent years. Since 2011, the company has released a major macOS update annually. The system has moved through many famous codenames, starting with version 10.0, "Cheetah," in 2001. Other notable versions include 10.1 "Puma," 10.2 "Jaguar," and 10.4 "Tiger." The system saw significant updates through versions like 10.6 "Snow Leopard" and 10.15 "Catalina." The most recent major release mentioned is macOS Sequoia, which arrived in September 2024. Looking forward, Apple has planned macOS Tahoe for release in 2025.\n\nUnderstanding these systems requires looking at how they manage complex tasks. The classic Mac OS used a monolithic design, meaning the system was built as a single, large unit. Early versions could only run one application at a time. Later, System 5 introduced cooperative multitasking to allow more activity. System 7 eventually added 32-bit memory addressing and virtual memory, which allowed the computer to run larger programs. In contrast, the modern macOS is based on the open-source Darwin operating system. Darwin is built on the XNU kernel and BSD, providing a much more stable and powerful environment for modern computing.",

"media": [

"File:Mac OS wordmark logo.svg",

"File:MacosxlogoX1.png"

]

}

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