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The size of a screen is usually described by the length of its diagonal, which is the distance between opposite corners, typically measured in inches. It is also sometimes called the physical image size to distinguish it from the "logical image size," which describes a screen's display resolution and is measured in pixels. [1] [2]
is diagonal size in pixels. is diagonal size in inches (this is the number advertised as the size of the display). For example: For 15.6-inch screen with a 5120×2880 resolution you get + = 376.57 PPI.
A common size for LCDs manufactured for small consumer electronics, basic mobile phones and feature phones, typically in a 1.7" to 1.9" diagonal size. This LCD is often used in portrait (128×160) orientation. The unusual 5:4 aspect ratio makes the display slightly different from QQVGA dimensions. 160×128 (20k) 160 128 20,480 5:4 UNNAMED UNNAMED
iPhone OS 3.1.3: Display Screen size 4 in (100 mm) (diagonal) 3.5 by 1.9 in (89 by 48 mm) 3.5 in (89 mm) (diagonal) 2.9 by 1.9 in (74 by 48 mm) Backlight LED-backlit: Multi-touch Yes Technology Retina Display widescreen with IPS technology Widescreen with TN technology Resolution 640 x 1136 640 x 960 320 x 480 Pixel Density (ppi) 326 163
It is expressed as two numbers separated by a colon (x:y), where x corresponds to the width and y to the height. Common aspect ratios for displays, past and present, include 5:4, 4:3, 16:10, and 16:9. To distinguish: The display aspect ratio (DAR) is calculated from the physical width and height of a display, measured each in inch or cm ...
Available via iOS 18.2, iPadOS 18.2, and macOS 15.2, the upgrades are part of Apple’s effort to goose iPhone, iPad, and Mac sales and compete with Android (GOOG, GOOGL) rivals in the US like ...
After having used VGA-based 3∶2 resolutions HVGA (480 × 320) and "Retina" DVGA (960 × 640) for several years in their iPhone and iPod products with a screen diagonal of 9 cm or 3.5 inches, Apple started using more exotic variants when they adopted the 16∶9 aspect ratio to provide a consistent pixel density across screen sizes: first 1136 ...
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