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iPhone 7 and iPhone 7 Plus are smartphones designed, developed, and marketed by Apple Inc. They were announced on September 7, 2016, at the Bill Graham Civic Auditorium in San Francisco by Apple CEO Tim Cook, and were released on September 16, 2016, succeeding the iPhone 6S and iPhone 6S Plus as the current flagship devices in the iPhone series.

Apple also released the iPhone 7 and 7 Plus in numerous countries worldwide throughout September and October 2016.

Windows 10 is a personal computer operating system developed and released by Microsoft as part of the Windows NT family of operating systems.

It was officially unveiled in September 2014 following a brief demo at Build 2014.

The first version of the operating system entered a public beta testing process in October, leading up to its consumer release on July 29, 2015.

Android is a mobile operating system developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets.

Android's user interface is mainly based on direct manipulation, using touch gestures that loosely correspond to real-world actions, such as swiping, tapping and pinching, to manipulate on-screen objects, along with a virtual keyboard for text input.

In addition to touchscreen devices, Google has further developed Android TV for televisions, Android Auto for cars, and Android Wear for wrist watches, each with a specialized user interface.

Variants of Android are also used on notebooks, game consoles, digital cameras, and other electronics.

iPad is a line of tablet computers designed, developed and marketed by Apple Inc., which run the iOS mobile operating system.

The first iPad was released on April 3, 2010; the most recent iPad models are the 9.7-inch iPad Pro released on March 31, 2016 and the iPad Mini 4, released on September 9, 2015.

The user interface is built around the device's multi-touch screen, including a virtual keyboard.

The iPad includes built-in Wi-Fi and cellular connectivity on select models.

As of January 2015, there have been over 250 million iPads sold.

iPad tablets are second most popular, by sales, against Android-based ones, since 2013, when Android tablet sales increased by 127%.

High-definition video is video of higher resolution and quality than standard-definition.

While there is no standardized meaning for high-definition, generally any video image with considerably more than 480 horizontal lines (North America) or 576 horizontal lines (Europe) is considered high-definition.

480 scan lines is generally the minimum even though the majority of systems greatly exceed that.

Images of standard resolution captured at rates faster than normal (60 frames/second North America, 50 fps Europe), by a high-speed camera may be considered high-definition in some contexts.

Some television series shot on high-definition video are made to look as if they have been shot on film, a technique which is often known as filmizing.