Snow Leopard :
Mac OS X version 10.6 "Snow Leopard" is the seventh major release of Mac OS X, Apple's desktop and server operating system.This version of Mac OS X focuses on improving performance, efficiency and reducing its overall memory footprint compared to its predecessor Mac OS X v10.5 "Leopard", rather than new end-user features. This is also the first Mac OS release since the introduction of System 7.1.2 that does not support the PowerPC architecture, as Apple now intends to focus on its current line of Intel-based products.Without any major overhauls to the existing Leopard interface, Apple has re-written the Finder in 64-bit Cocoa to take advantage of other new process improvements in Snow Leopard. These include:
- Stacks will allow viewing a subfolder without launching Finder. Stacks have also been modified to include scroll-bars for folders with many files.
- The default gamma has been changed from 1.8 to 2.2 to better serve the color needs of digital content producers and consumers.
- Contextual menus which come out of Dock icons now have more options and have a new look, with a semi-transparent charcoal background and white type.
- Expose can now display all windows for a single program by left clicking and holding its icon in the dock.
- Windows can now be minimized directly onto their application's icon in the dock.
- Faster PDF and JPEG icon refreshes.
- Artificial intelligence algorithms used for selecting of columned text in PDF documents.
- Faster startup, shutdown, installation, Time Machine backup and connection establishment.
- Smaller OS footprint on disk, freeing 7 GB or more.
- Printer drivers are now downloaded/installed only as needed, rather than installing all drivers and wasting disk space. The default install only contains those drivers needed for existing printers and a small subset of popular printers.
- When searching for a network, the AirPort signal bar places show it showing 1 bar at a time until it finds a network.
- Prefixes for bytes are now used in strictly decimal meaning when describing disk space, such that an indicated file size of 1 MB corresponds to 1,000,000 bytes, as commonly used by hard disk manufacturers.
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