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macOS is the operating system that powers every Mac. It lets you do things you simply can’t with other computers. That’s because it’s designed specifically for the hardware it runs on — and vice versa. macOS comes with an entire suite of beautifully designed apps. It works hand in hand with iCloud to keep photos, documents, and other stuff up to date on all your devices. It makes your Mac work like magic with your iPhone and other Apple devices. And it’s been built from the ground up with privacy and security in mind.
Install with Visual Studio for Mac. Visual Studio for Mac installs the.NET Core SDK when the.NET Core workload is selected. To get started with.NET Core development on macOS, see Install Visual Studio 2019 for Mac. For the latest release,.NET Core 3.1, you must use the Visual Studio for Mac 8.4. Install alongside Visual Studio Code. Darwin is an open-source Unix-like operating system first released by Apple Inc. It is composed of code developed by Apple, as well as code derived from NeXTSTEP, BSD, Mach, and other free software projects. Darwin forms the core set of components upon which macOS (previously OS X and Mac OS X), iOS, watchOS, tvOS, and iPadOS are based. It is mostly POSIX-compatible, but has never. Categories & Filters. Store Pickup at. Intel Core 2 Duo Intel Core 2 Duo. Intel Core M Intel Core M. Intel Core m3 Intel Core m3. Intel Core2 Duo Intel Core2 Duo. Intel Xeon Intel Xeon. Show Screen Size filter description.
Featuring all-new, dedicated apps for music, TV, and podcasts. Smart new features in the apps you use every day. And Sidecar, which lets you use iPad as a second Mac display.
Easy to Use When it’s simple to
do
everything, you can do anything.
On a Mac, everything is designed to work just the way you expect it to — from operating it with simple, intuitive gestures to asking Siri to find a file to having your apps automatically update themselves. Whatever you set out to do on a Mac, there’s much less to learn and that much more to accomplish.
The Finder lets you easily browse and organize the files on your Mac — and those stored in iCloud Drive. View files by icons, in a list, or with Gallery View, which helps you quickly locate a file by how it looks. Drag and drop files into folders in the sidebar. And use the Preview pane to see all of your files’ metadata, quickly create .zip files, and share using the handy Share menu.
Dark Mode adds a dramatic look to your desktop and apps that puts the focus on your content. Dynamic Desktop makes your Mac even more beautiful with time-shifting desktop pictures that match the time of day wherever you are. And Stacks keeps your desktop free of clutter by automatically organizing your files, images, documents, PDFs, and more into tidy groups.
Spotlight helps you quickly and effortlessly find what you want, like documents on your Mac, movie showtimes, and flight departure and arrival times. Just type a few keystrokes in the Spotlight search field and autocomplete immediately shows you relevant results.1
A simple two-finger swipe from the right edge of your trackpad brings up Notification Center — the same one you use on iPhone — where you can see all the alerts that have come in recently. It’s also where you’ll find your Today view, which you can customize with helpful widgets or handy information pinned from Siri searches.
Siri helps you get things done just by using your voice. It also helps you get more things done at the same time. So you can finish your document while asking Siri to tell your coworker that it’s on the way. Looking for the presentation you worked on last week? Just ask Siri.2 And with Apple Music, Siri can be your personal DJ and recommend music based on your tastes, and tell you more about songs, albums, and artists.3
Continuity All your devices.
One seamless experience.
Your Mac works with your other Apple devices in ways no other computer can. If you get a call on your iPhone, you can take it on your Mac. And when friends text you — regardless of the phone they have — you can respond from your Mac, iPad, or iPhone, whichever is closest. When you copy text or an image from one device, you can paste it into another with standard copy and paste commands. And with Sidecar, you can extend your workspace by using your iPad as a second Mac display. You can even unlock your Mac with your Apple Watch. No password typing required.
Privacy and Security We believe your data belongs to you. Period.
Everything you do with your Mac is protected by strong privacy and security features. That’s because we build data security into everything we make, right from the start.
Privacy. You trust our products with your most personal information, and we believe that you should be in complete control of it. We respect your privacy by enacting strict policies that govern how all data is handled. And when you browse the web, Safari helps prevent data companies from tracking the sites you visit.
Security. We design Mac hardware and software with advanced technologies that work together to help you run apps safely, protect your data, and keep you safe on the web. The new Find My app helps you locate a missing Mac that’s lost or stolen — even if it’s offline or sleeping. And Gatekeeper makes it safer to download and install apps from the Mac App Store and the internet.
Built in Apps Apps as powerful and elegant as your Mac. Because they’re designed for it.
With every Mac, you get a collection of powerful apps. They’re the same apps you use on your iPhone or iPad, so they’ll feel instantly familiar. They all work with iCloud, so your schedule, contacts, and notes are always up to date everywhere. And because they’re native apps — not web apps in a browser — they take full advantage of the power of your Mac to deliver the fastest possible performance and more robust features.
Media. Experience music, TV, and podcasts in three all-new Mac apps. Get all the news that matters from sources you trust, all in one place.4 Track the market and customize your watchlist. Peruse the best book titles from your desktop. And find the latest apps and extensions for your Mac, right on your Mac.
- Podcasts
- Stocks
- App Store
Creativity. Enjoy your best photos and videos, showcased in an immersive, dynamic new look. Transform home videos into unforgettable movies or quickly share clips with your favorite people. Create music like the pros with a huge collection of sounds, instruments, amps, and a lineup of virtual session drummers and percussionists perfectly suited to play along with your song.
Productivity. Create beautiful documents with stunning simplicity. Visualize your data precisely and persuasively in spreadsheets with images, text, and shapes. Make stage-worthy presentations using powerful graphics tools and dazzling cinematic effects to bring your ideas to life. And collaborate with friends and coworkers in real time — whether they’re across town or across the globe.
Communication. Easily manage all of your email accounts in one simple, powerful app that works with email services like iCloud, Gmail, Yahoo, AOL, and Microsoft Exchange. Send unlimited messages to anyone on any Apple device, using the same Messages app on your Mac as you do on your iPhone. Make unlimited high-quality video and audio calls right from your Mac with FaceTime. And securely locate a missing Mac using the new Find My app on Mac, iPhone, and iPad.
- Mail
- Messages
- FaceTime
Organization. A new gallery view and more powerful search help you find your notes more quickly than ever. Easily create, organize, and add attachments to reminders. Manage your iCloud, Google, and Exchange calendars in one place, create separate calendars for home, work, and school, and view them all or just the ones you want. Instantly capture personal reminders, class lectures, even interviews or song ideas with Voice Memos. Keep all your contact info up to date on all your devices, and easily import numbers, addresses, and photos from Google and Microsoft Exchange. And control all your HomeKit-enabled accessories from the comfort of your desktop.
- Notes
- Reminders
- Calendar
- Voice Memos
- Contacts
Internet. Surf the web seamlessly with an updated start page that helps you quickly access your favorite and frequently visited sites. Use Apple Pay to make purchases on the web in Safari with Touch ID on MacBook Pro and MacBook Air. Map out new destinations from your desktop, with gorgeous 3D city views like Flyover, point-to-point directions, and comprehensive transit directions. And instantly search your entire Mac or get results from the internet in just a few keystrokes.
- Spotlight
iCloud All your stuff on your Mac.
And everywhere else you want it.
Every Apple app uses iCloud — it’s the magic behind the seamless experience you have with all your Apple devices. So you always have your photos, videos, documents, email, notes, contacts, calendars, and more on whatever device you’re using. And any file you store in iCloud Drive can be shared with friends, family, and colleagues just by sending them a link. iCloud Drive also lets you access files from your Mac on your iPhone or iPad. It’s all done automatically. Just like that.5
Accessibility We make sure that everyone is able to use a Mac.
macOS comes standard with a wide range of assistive technologies that help people with disabilities experience what the Mac has to offer, providing many features you won’t find in other operating systems. Voice Control lets users control their Mac, iPad, and iPhone entirely with their voice. And features such as VoiceOver, Accessibility Keyboard, FaceTime,6 and Text to Speech help everyone get more out of Mac.
Technology Advanced to the core.
macOS features powerful core technologies engineered for the most important functions of your Mac. Thanks to Mac Catalyst, you can now enjoy your favorite iPad apps on your Mac. With SwiftUI, developers have a simple way to build better apps across all Apple platforms with less code. Create ML gives developers a faster and easier way to build machine learning into apps. And support for virtual and augmented reality lets developers create immersive worlds for you to step into.
Compatibility Need to work with Windows?
Mac does that, too.
With macOS, it’s easy to transfer your files, photos, and other data from a Windows PC to your Mac. Work with popular file types such as JPEG, MP3, and PDF, as well as Microsoft Word, Excel, and PowerPoint documents. And, of course, you can run Microsoft Office natively on a Mac. If you want, you can even run Windows on your Mac.7
Find the right iMac for you.
21.5‑inch iMac
Starting at $1099
- Up to 21.5' Retina 4K display
- Up to 6-core Intel Core i7 processor
- Up to 32GB memory
- Up to 1TB SSD storage
- Up to Radeon Pro Vega 20 with 4GB of HBM2 memory
27‑inch iMac
Starting at $1799
- 27' Retina 5K display
- Up to 10-core Intel Core i9 processor
- Up to 128GB memory
- Up to 8TB SSD storage
- Up to Radeon Pro 5700 XT with 16GB of GDDR6 memory
The technologies and frameworks in the Core OS layer provide low-level services related to hardware and networks. These services are based on facilities in the Kernel and Device Drivers layer.
High-Level Features
The Core OS layer implements features related to app security.
Gatekeeper
Gatekeeper, allows users to block the installation of software that does not come from the Mac App Store and identified developers. If your app is not signed with a Developer ID certificate issued by Apple, it will not launch on systems that have this security option selected. If you plan to distribute your app outside of the Mac App Store, be sure to test the installation of your app on a Gatekeeper enabled system so that you can provide a good user experience.
Xcode supports most of the tasks that you need to perform to get a Developer ID certificate and code sign your app. To learn how to submit your app to the Mac App Store—or test app installation on a Gatekeeper enabled system—read Tools Workflow Guide for Mac.
App Sandbox
App Sandbox provides a last line of defense against stolen, corrupted, or deleted user data if malicious code exploits your app. App Sandbox also minimizes the damage from coding errors. Its strategy is twofold:
- App Sandbox enables you to describe how your app interacts with the system. The system then grants your app only the access it needs to get its job done, and no more.
- App Sandbox allows the user to transparently grant your app additional access by using Open and Save dialogs, drag and drop, and other familiar user interactions.
You describe your app’s interaction with the system by setting entitlements in Xcode. For details on all the entitlements available in OS X, see Entitlement Key Reference.
When you adopt App Sandbox, you must code sign your app (for more information, see Code Signing). This is because entitlements, including the special entitlement that enables App Sandbox, are built into an app’s code signature.
For a complete explanation of App Sandbox and how to use it, read App Sandbox Design Guide.
Code Signing
OS X employs the security technology known as code signing to allow you to certify that your app was indeed created by you. After an app is code signed, the system can detect any change to the app—whether the change is introduced accidentally or by malicious code. Various security technologies, including App Sandbox and parental controls, depend on code signing.
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In most cases, you can rely on Xcode automatic code signing, which requires only that you specify a code signing identity in the build settings for your project. The steps to take are described in Code Signing Your App in Tools Workflow Guide for Mac. If you need to incorporate code signing into an automated build system or if you link your app against third-party frameworks, refer to the procedures described in Code Signing Guide.
For a complete explanation of code signing in the context of App Sandbox, read App Sandbox in Depth in App Sandbox Design Guide.
Core OS Frameworks
The following technologies and frameworks are in the Core OS layer of OS X:
Accelerate
The Accelerate framework (
Accelerate.framework
) contains APIs that help you accelerate complex operations—and potentially improve performance—by using the available vector unit. Hardware-based vector units boost the performance of any app that exploits data parallelism, such as those that perform 3D graphic imaging, image processing, video processing, audio compression, and software-based cell telephony. (Because Quartz and QuickTime Kit incorporate vector capabilities, any app that uses these APIs can tap into this hardware acceleration without making any changes.)The Accelerate framework is an umbrella framework that wraps the vecLib and vImage frameworks into a single package. The vecLib framework contains vector-optimized routines for doing digital signal processing, linear algebra, and other computationally expensive mathematical operations. The vImage framework supports the visual realm, adding routines for morphing, alpha-channel processing, and other image-buffer manipulations.
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For information on how to use the components of the Accelerate framework, see vImage Programming Guide, vImage Reference Collection, and vecLib Reference. For general performance-related information, see Performance Overview.
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Disk Arbitration
The Disk Arbitration framework (
DiskArbitration.framework
) notifies your app when local and remote volumes are mounted and unmounted. It also furnishes other updates on the status of remote and local mounts and returns information about mounted volumes. For example, if you provide the framework with the BSD disk identifier of a volume, you can get the volume’s mount-point path.For more information on Disk Arbitration, see Disk Arbitration Framework Reference.
OpenCL
The Open Computing Language (OpenCL) makes the high-performance parallel processing power of GPUs available for general-purpose computing. The OpenCL language is a general purpose computer language, not specifically a graphics language, that abstracts out the lower-level details needed to perform parallel data computation tasks on GPUs and CPUs. Using OpenCL, you create compute kernels that are then offloaded to a graphics card or CPU for processing. Multiple instances of a compute kernel can be run in parallel on one or more GPU or CPU cores, and you can link to your compute kernels from Cocoa, C, or C++ apps.
For tasks that involve data-parallel processing on large data sets, OpenCL can yield significant performance gains. There are many apps that are ideal for acceleration using OpenCL, such as signal processing, image manipulation, and finite element modeling. The OpenCL language has a rich vocabulary of vector and scalar operators and the ability to operate on multidimensional arrays in parallel.
![For For](/uploads/1/2/4/6/124615999/826221490.jpg)
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For information about OpenCL and how to write compute kernels, see OpenCL Programming Guide for Mac.
Open Directory (Directory Services)
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Open Directory is a directory services architecture that provides a centralized way to retrieve information stored in local or network databases. Directory services typically provide access to collected information about users, groups, computers, printers, and other information that exists in a networked environment (although they can also store information about the local system). You use Open Directory to retrieve information from these local or network databases. For example, if you’re writing an email app, you can use Open Directory to connect to a corporate LDAP server and retrieve the list of individual and group email addresses for the company.
Open Directory uses a plug-in architecture to support a variety of retrieval protocols. OS X provides plug-ins to support LDAPv2, LDAPv3, NetInfo, AppleTalk, SLP, SMB, DNS, Microsoft Active Directory, and Bonjour protocols, among others. You can also write your own plug-ins to support additional protocols.
The Open Directory framework (
OpenDirectory.framework
) publishes a programmatic interface for accessing Open Directory services.For more information on this technology, see Open Directory Programming Guide. For information on how to write Open Directory plug-ins, see Open Directory Plug-in Programming Guide.
System Configuration
System Configuration (
SystemConfiguration.framework
) is a framework that helps apps configure networks and determine if networks can be reached prior to connecting with them. The framework includes calls for a user experience when interacting with a captive network. (A captive network, such as a public Wi-Fi hotspot, requires user interaction before providing Internet access.)Use System Configuration APIs to determine and set configuration settings and respond dynamically to changes in that information. You can also use these APIs to help you determine whether a remote host is reachable and, if it is, to request a network connection so it can provide content to its users. To assist in this, System Configuration does the following:
- It provides access to current network configuration information.
- It allows apps to determine the reachability of remote hosts and start PPP-based connections.
- It notifies apps when there are changes in network status and network configuration.Ajay yadav anaesthesia pdf free. Sep 21, 2017 fidget spinner is a toy. Backgroundapixaban, an oral, direct factor xa inhibitor, may reduce the risk of ajay yadav anaesthesia pdf free download. Itns 280 pdf editable by ajay yadav any quary to contact me - others. Professional publishing 2005 bostons download download ajay yadav anaesthesia pdf free free cy lee manual. Oct 14, 2016 Ajay Yadav Anaesthesia PDF millers anaesthesia 8th edition chm PDF. 18 AJAY YADAV ANAESTHESIA PDF FREE DOWNLOAD Dec 8, 2009. Combined with the built-in ajay yadav anaesthesia pdf free download. Download aneasthesia textbook EBooks. Hundreds of playlists. Get all the benefits of Amazon Prime at half the cost.(6 month free trial)Start your Free.
- It provides a flexible schema for defining and accessing stored preferences and the current network configuration.
To learn more about System Configuration, see System Configuration Programming Guidelines.
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