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Widescreen images are a variety of aspect ratios used in film, television and computer screens.

In film, a widescreen film is any film image with a width-to-height aspect ratio greater than the standard 1.37:1 Academy aspect ratio provided by 35mm film.

1080p (1920×1080 px; also known as full HD or FHD and BT.709) is a set of HDTV high-definition video modes characterized by 1080 horizontal lines of vertical resolution; the p stands for progressive scan, id est non-interlaced.

The term usually assumes a widescreen aspect ratio of , implying a resolution of 2.1 megapixels.

It is often marketed as full HD, to contrast 1080p with 720p resolution screens.

4K resolution, also called 4K, refers to a horizontal resolution on the order of 4,000 pixels and vertical resolution on the order of 2,000 pixels.

Several 4K resolutions exist in the fields of digital television and digital cinematography.

In the movie projection industry, Digital Cinema Initiatives (DCI) is the dominant 4K standard.

In television and consumer media, 4K UHD or UHD-1 is the dominant 4K standard.

By 2015, 4K television market share had increased greatly as prices fell dramatically during 2014 and 2015.

By 2025, more than half of U.S. households are expected to have a 4K-capable TV (2160p), which would be a much faster adoption rate than that of Full HD (1080p).

A tablet computer, commonly shortened to tablet, is a thin, flat mobile computer with a touch screen display, which is usually in color, processing circuitry, and a rechargeable battery in a single device.

Tablets often come equipped with sensors, including digital cameras, a microphone, and an accelerometer so images on screens are always displayed upright.

The touchscreen display uses the recognition of finger or stylus gestures to replace the mouse, trackpad and keyboard used in laptops.

The display resolution or display modes of a digital television, computer monitor or display device is the number of distinct pixels in each dimension that can be displayed.

It can be an ambiguous term especially as the displayed resolution is controlled by different factors in cathode ray tube (CRT) displays, flat-panel displays (including liquid-crystal displays) and projection displays using fixed picture-element (pixel) arrays.