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Project Volta
Android Lollipop ( codenamed Android L during development) is the fifth major version of the Android mobile operating system developed by Google and the 12th version of Android, spanning versions between 5.0 and 5.1.1. Unveiled on June 25, 2014, at the Google I/O 2014 conference, it became available through official over-the-air (OTA) updates on November 12, 2014, for select devices that run distributions of Android serviced by Google (such as Nexus and Google Play edition devices). Its source code was made available on November 3, 2014. The first phone with Android Lollipop was the Nexus 6. One of the most prominent changes in the Lollipop release is a redesigned user interface built around a design language known as Material Design, which was made to retain a paper-like feel to the interface. Other changes include improvements to the notifications, which can be accessed from the lockscreen and displayed within applications as top-of-the-screen banners. Google also made int ...
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Android (operating System)
Android is an operating system based on a modified version of the Linux kernel and other open-source software, open-source software, designed primarily for touchscreen-based mobile devices such as smartphones and tablet computer, tablets. Android has historically been developed by a consortium of developers known as the Open Handset Alliance, but its most widely used version is primarily developed by Google. First released in 2008, Android is the world's Usage share of operating systems, most widely used operating system; the latest version, released on June 10, 2025, is Android 16. At its core, the operating system is known as the Android Open Source Project (AOSP) and is free and open-source software (FOSS) primarily licensed under the Apache License. However, most devices run the proprietary software, proprietary Android version developed by Google, which ships with additional proprietary closed-source software pre-installed, most notably Google Mobile Services (GMS), which ...
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Android Ice Cream Sandwich
Android Ice Cream Sandwich (or Android 4.0) is the fourth major version of the Android mobile operating system developed by Google. Unveiled on October 19, 2011, Android 4.0 built upon the significant changes made by the tablet-only release Android Honeycomb, in an effort to create a unified platform for both smartphones and tablets. The first phone with Android Ice Cream Sandwich was Samsung Galaxy Nexus. Android 4.0 was focused on simplifying and modernizing the overall Android experience around a new set of human interface guidelines. As part of these efforts, it introduced a new visual appearance codenamed "Holo", which was built around a cleaner, minimalist design, and a new default typeface named Roboto. It also introduced a number of other new features, including a refreshed home screen, near-field communication (NFC) support and the ability to "beam" content to another user using the technology, an updated web browser, a new contacts manager with social network ...
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Tabbed Browsing
In interface design, a tab is a graphical user interface object that allows multiple documents or Panel (computer software), panels to be contained within a single window (computing), window, using tabs as a navigational widget for switching between sets of documents. It is an interface style most commonly associated with web browsers, web applications, text editors, and preference panels, with window managers and tiling window managers. Tabs are modeled after traditional card tabs inserted in paper files or card indexes (in keeping with the desktop metaphor). They are usually graphically displayed on webpages or apps as they look on paper. Tabs may appear in a horizontal bar or as a vertical list. Horizontal tabs may have multiple rows. In some cases, tabs may be reordered or organized into multiple rows through drag and drop interactions. Implementations may support opening an existing tab in a separate window or Selection (user interface)#Range selection, range-selecting mul ...
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Lock Screen
A lock screen is a computer user interface element used by various operating systems. They regulate immediate access to a device by requiring the user to perform a certain action in order to receive access, such as entering a password, using a certain button combination, or performing a certain gesture using a device's touchscreen. There are various authentication methods to get past the lock screen, with the most popular and common ones being personal identification numbers (PINs), the Android pattern lock, and biometrics (e.g. Touch ID and facial recognition). Depending on the operating system and device type, a lock screen can range from a simple login screen, to an overview screen with the current date and time, weather, recent notifications, playback controls for media being played in the background (typically music), shortcuts to applications (such as the camera), and optionally, the contact information of the device's owner (which can be used in the event that the device ...
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Matías Duarte
Matías Duarte is a Chilean Americans, Chilean-American User interface design, computer interface designer and Google's Vice President of Design. Prior to his current role, he was the Director of Android (operating system), Android User Experience. Android 3.0 "Honeycomb" was the first release with major elements of his design influence. Prior to moving to Google to work on Android, Duarte had similar roles in Palm, Inc.’s webOS, the Helio Ocean and the Danger Hiptop (T-Mobile Sidekick). Career Duarte started his career at Psycroft where he cowrote xBill with Brian Wellington. He left Psycroft in 1996 at which time he moved to Hyper Image Productions where he was the lead designer on ''Phase Zero'', an unreleased shooter game for the Atari Jaguar. In 1997 he left Hyper Image Productions and moved to MagicArts where he filled the role of Vice President of Design until 1999. In March 2000 Duarte took a role at Danger (company), Danger as the Director of Design where his team won t ...
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Google Now
Google Now was a feature of Google Search of the Google app for Android and iOS. Google Now proactively delivered information to users to predict (based on search habits and other factors) information they might need in the form of informational cards. Google Now branding is no longer used, but the functionality continues in the Google app and its discover tab. Google first included Google Now in Android 4.1 ("Jelly Bean"), which launched on July 9, 2012, and the Galaxy Nexus smartphone was first to support it. The service became available for iOS on April 29, 2013, without most of its features. In 2014, Google added Now cards to the notification center in ChromeOS and in the Chrome browser. Later, however, they removed the notification center entirely from Chrome. ''Popular Science'' named Google Now the "Innovation of the Year" for 2012. Since 2015, Google gradually phased out reference to "Google Now" in the Google app, largely removing the remaining use of "Now" in Octo ...
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Index Card
An index card (or record card in British English and system cards in Australian English) consists of card stock (heavy paper) cut to a standard size, used for recording and storing small amounts of discrete data. A collection of such cards either serves as, or aids the creation of, an index (publishing), index for expedited lookup of information (such as a library catalog or a back matter, back-of-the-book index). This system is said to have been invented by Carl Linnaeus, around 1760. Format The most common paper size, size for index card in North America and the UK is , hence the common name 3-by-5 card. Other sizes widely available include , and ISO 216#A series, ISO-size A7 (). Cards are available in blank, ruled and grid styles in a variety of colors. Special divider cards with protruding tabs and a variety of cases and trays to hold the cards are also sold by stationers and office product companies. They are part of standard stationery and office supplies all around t ...
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Google Fit
Google Fit is a health-tracking platform developed by Google for the Android operating system, Wear OS, and iOS. It is a single set of APIs that blends data from multiple apps and devices. Google Fit uses sensors in a user's activity tracker or mobile device to record physical fitness activities (such as walking, cycling, etc.), which are measured against the user's fitness goals to provide a comprehensive view of their fitness. History Google Fit was announced at the Google I/O conference on June 25, 2014. A software development kit for Google Fit was released on August 7, 2014. Fit launched to the public on October 28, 2014. In August 2018, Google announced a revamp to its Android Fit platform which adds activity goals based on activity recommendations from the American Heart Association and the World Health Organization. The updates are meant to help Fit better provide metrics for activities other than walking and encourage users to engage in activities that will raise t ...
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Android Wear
Wear OS, formerly Android Wear, is a closed-source Android distribution designed for smartwatches and other wearable computers, developed by Google. Wear OS is designed to pair with mobile phones running Android ( version 6.0 "Marshmallow" or newer) or iOS (version 10.0 or newer), providing mobile notifications into a smartwatch form factor and integration with the Google Assistant technology. Wear OS supports Bluetooth, NFC, Wi-Fi, 3G, and LTE connectivity, as well as a range of features and applications provided through Google Play. Watch face styles include round, square and rectangular. Hardware manufacturing partners include Asus, Broadcom, Fossil, HTC, Intel, LG, MediaTek, Imagination Technologies, Motorola, New Balance, Xiaomi, Qualcomm, Samsung, Huawei, Skagen, Polar, TAG Heuer, Suunto, and Mobvoi. The operating system was first released in 2014 as Android Wear, and took its current name in 2018. Analysts estimate that over 720,000 Android Wear smartwatches were ...
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Wearable Computing
A wearable computer, also known as a body-borne computer, is a computing device worn on the body. The definition of 'wearable computer' may be narrow or broad, extending to smartphones or even ordinary wristwatches. Wearables may be for general use, in which case they are just a particularly small example of mobile computing. Alternatively, they may be for specialized purposes such as fitness trackers. They may incorporate special sensors such as accelerometers, heart rate monitors, or on the more advanced side, electrocardiogram (ECG) and blood oxygen saturation (SpO2) monitors. Under the definition of wearable computers, we also include novel user interfaces such as Google Glass, an optical head-mounted display controlled by gestures. It may be that specialized wearables will evolve into general all-in-one devices, as happened with the convergence of PDAs and mobile phones into smartphones. Wearables are typically worn on the wrist (e.g. fitness trackers), hung from the nec ...
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Android Auto
Android Auto is a mobile app developed by Google to mirror features of a smartphone (or other Android device) on a car's dashboard information and entertainment head unit. Once an Android device is paired with the car's head unit, the system can mirror some apps on the vehicle's display. Supported apps include GPS mapping and navigation, music playback, SMS, telephone, and Web search. The system supports both touchscreen and button-controlled head units. Hands-free operation through voice commands is available and recommended to reduce driver distraction. Android Auto is part of the Open Automotive Alliance, a joint effort of 28 automobile manufacturers, with Nvidia as tech supplier, available in 36 countries. Functionality Android Auto is software that can be utilized from an Android mobile device, acting as a master to a vehicle's dashboard head unit. Once the user's Android device is connected to the vehicle, the head unit will serve as an external display for th ...
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Android TV
Android TV is an operating system that runs on smart TVs and related entertainment devices including soundbars, set-top boxes, and digital media players. Developed by Google, it is a closed-source Android distribution. Android TV features a user interface designed around content discovery and voice search, content aggregation from various media apps and services, and integration with other recent Google technologies such as Assistant, Cast, and Knowledge Graph. The platform was unveiled in June 2014, as a successor to Google TV, available first on the Nexus Player in October. The platform has since been adopted as smart TV middleware by companies such as Hisense, Sony, Panasonic, Philips, Sharp, Motorola, Nokia, Toshiba and TCL. Android TV products have also been adopted as set-top boxes by a number of IPTV television providers. The "Operator Tier" certification allows operators to distribute their own custom devices based on the Android TV platform. Overview The Andro ...
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