MacOS is an operating system designed by Apple. The operating system is what allows you to use a computer. MacOS comes preloaded on all new Apple Macintosh computers (commonly known as Macs). MacOS makes it possible to complete all kinds of everyday tasks on your computer. For example, you can use it to browse the Internet, check your email. Earlier versions of macOS have been around since the mid-1980s. There have been many versions since then, but the most recent ones include macOS Mojave (2018), High Sierra (2017), Sierra (2016).El Capitan (2015), and Yosemite (2014). In some older versions, macOS was called OS X (pronounced O-S ten).However, many people use the terms OS X and macOS interchangeably because the basic.

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This chapter introduces Mac OS X and key features such as the desktop, Finder, Dock, and Spotlight. You’ll learn how to use menus, buttons, and accessibility features that make it easier to use your computer, as well as how to work with applications and windows. In 1984, Apple debuted the operating system that is now known as the 'Classic' Mac OS with its release of the original Macintosh System Software. The system, rebranded 'Mac OS' in 1996, was preinstalled on every Macintosh until 2002 and offered on Macintosh clones for a short time in the 1990s. Fortunately, distributed access can solve these issues. In describing how and presenting a benchmark, this paper builds on the work presented in 10, which introduced a framework for accessing.

Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by a product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

macOS	Latest version
macOS Big Sur	11.3
macOS Catalina	10.15.7
macOS Mojave	10.14.6
macOS High Sierra	10.13.6
macOS Sierra	10.12.6
OS X El Capitan	10.11.6
OS X Yosemite	10.10.5
OS X Mavericks	10.9.5
OS X Mountain Lion	10.8.5
OS X Lion	10.7.5
Mac OS X Snow Leopard	10.6.8
Mac OS X Leopard	10.5.8
Mac OS X Tiger	10.4.11
Mac OS X Panther	10.3.9
Mac OS X Jaguar	10.2.8
Mac OS X Puma	10.1.5
Mac OS X Cheetah	10.0.4

In a Finder window, press VO-Right Arrow or VO-Left Arrow to move through the window until you hear “toolbar.” Interact with the toolbar.

Press VO-Right Arrow until you hear “view radio group” and then interact with that control. Press VO-Right Arrow key until you hear the view you want to use.

You can choose from icon, list, column, or Cover Flow view. In Cover Flow view, the browser is split horizontally into two sections. The top section is a graphical view of each item, such as folder icons or a preview of the first page of a document. The bottom section is a list view of the items.

When you have selected a view, stop interacting with the view radio group and the toolbar, and then press VO-Right Arrow to move through the window until you hear “sidebar.”

To move down the list of items in the sidebar, press VO-Down Arrow. When you hear the item you want, jump to it in the view browser; you can interact with it.

To jump, press VO-J. If you’re using VoiceOver gestures, keep a finger on the trackpad and press the Control key.

Move to and select the item you want to open, using the method for the view you’re in:

Icon view: Use the arrow keys to move to the item you want.

List view: To move down the list rows, press VO-Down Arrow. To expand and collapse a folder, press VO-. To move the VoiceOver cursor across a row and hear information about an item, press VO-Right Arrow. Or press VO-R to hear the entire row read at once.

Column view: To move down the list until you find the folder or file you want, use the Down Arrow key. To move into subfolders, press the Right Arrow key.

Cover Flow view: To flip through the items in the top section and move automatically through the corresponding list rows in the bottom section, press the Left Arrow or Right Arrow key.

When you find the file or folder you want to open, use the Finder shortcut Command-O or Command-Down Arrow to open it.

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VoiceOver announces when you have selected an alias or a file or folder you don’t have permission to open.