![]() ![]() What Is It and What's New? OS is the newest name of the Unix- based operating system that runs on Mac hardware, including desktop and portable models. And while the name is new, the features and capabilities of the Mac operating system have a long history, as you'll read here. The Macintosh started life using an operating system known simply as System, which produced versions ranging from System 1 to System 7. In 1. 99. 6, the System was rebranded as Mac OS 8, with the final version, Mac OS 9, released in 1. MacOS brings Siri to Mac. Along with new ways to enjoy your photos, shop more securely online, and work more seamlessly between devices. Apple needed a modern operating system to replace Mac OS 9 and take the Macintosh into the future, so in 2. Apple released OS X 1. Cheetah, as it was affectionately known. OS X was a new OS, built on a Unix- like kernel, that brought modern preemptive multitasking, protected memory, and an operating system that could grow with the new technology that Apple was envisioning. In 2. 01. 6, Apple changed the name of OS X to mac. OS, to better position the operating system's name with the rest of Apple's products (i. OS, watch. OS, and tv. OS). Although the name changed, mac. OS retains its Unix roots, and its unique user interface and features. If you've been wondering about the history of the mac. OS, or when features were added or removed, read on to look back to 2. OS X Cheetah was introduced, and learn what each subsequent version of the operating system brought with it. OS X Cheetah (1. 0.
OS X Cheetah retail box did not play up the cat name. Coyote Moon, Inc. Original release date: March 2. Price: $1. 29; available on CD/DVDCheetah was the first official release of OS X, although there was an earlier public beta of OS X available. OS X was quite a change from the Mac OS that preceded Cheetah. It represented a brand- new operating system completely separate from the earlier OS that powered the original Macintosh. OS X was built on a Unix- like core made up of code developed by Apple, Ne. XTSTEP, BSD, and Mach. The kernel (technically a hybrid kernel) used Mach 3 and various elements of BSD, including the network stack and file system. Combined with the code from Ne. XTSTEP (owned by Apple) and Apple, the operating system was known as Darwin, and was released as open source software under the Apple Public Source License. Higher levels of the operating system, including the Cocoa and Carbon frameworks used by Apple developers to build apps and services, remained closed source. Cheetah had a few problems when released, including a tendency to produce kernel panics at the drop of a hat. It seems many of the problems were from the memory management system that was brand new to Darwin and OS X Cheetah. Other new features found in Cheetah included: The Dock: The Dock was an application launcher that was presented as a band along the bottom or sides of the display. Icons representing applications and documents could be placed (docked) in the Dock, making them easy to access and launch. Terminal: The Terminal app allowed access to the Darwin operating system using a standard command line interface. Until Terminal, the Mac OS was one of the few operating systems that did not have a command line interface available. Mail: OS X came with a built- in email client. Preemptive Multitasking: While the Mac OS was capable of multitasking, it used a cooperative system, with each app's tasks asking for, and hopefully being granted, use of system resources. Preemptive multitasking ensures access to the system when needed. Aqua UI: The new user interface was known as Aqua. During the rollout of Cheetah, Steve Jobs mentioned the three buttons on the top of most windows, claiming they had spent a great deal of time making them look so good that they were "lick- able."PDF Support: Applications were able to generate PDFs using the printing services built into OS X. Quartz: Originally, Apple looked at using Display Post. Script to drive the display graphics of OS X; the idea was based on how Ne. XTSTEP made use of Display Post. Script in its products. Instead, Apple developed its own display rendering technology known as Quartz, which used Post. Script to cache intermediate window graphics as PDF- rendered models. Apple. Script: OS X included the Apple. Script scripting language that had been included with the Mac since System 7 (Mac OS). Sherlock: A search system for finding data residing on the Mac or the web. Protected Memory: Applications are assigned memory segments that prevent an app that corrupts its own memory location from being able to cascade into other memory locations used by other apps and system services.
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