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Memory effect, also known as battery effect, lazy battery effect, or battery memory, is an effect observed in nickel-cadmium rechargeable batteries that causes them to hold less charge. [ 1 ] [ 2 ] It describes the situation in which nickel-cadmium batteries gradually lose their maximum energy capacity if they are repeatedly recharged after ...
A laptop's battery is charged using an external power supply, which is plugged into a wall outlet. The power supply outputs a DC voltage typically in the range of 7.2—24 volts. The power supply is usually external and connected to the laptop through a DC connector cable. In most cases, it can charge the battery and power the laptop ...
The home screen appears whenever the user unlocks the device, presses the physical "Home" button while in an app, or swipes up from the bottom of the screen using the home bar. [91] The screen has a status bar across the top to display data, such as time, battery level, and signal strength. The rest of the screen is devoted to the current ...
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From 2011 to 2012, Apple released the iPhone 4s [133] and iPhone 5, [134] which featured improved cameras, an intelligent software assistant named Siri, and cloud-synced data with iCloud; the third-and fourth-generation iPads, which featured Retina displays; [135] [136] and the iPad Mini, which featured a 7.9-inch screen in contrast to the iPad ...
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A dock holds the iPad upright at an angle, and has a dock connector and audio line-out port. Each generation of iPad requires a corresponding dock. A dock that included a physical keyboard was only supported for the original iPad, [52] but all generations are compatible with Bluetooth keyboards that also work with Macs and PCs. The iPad can be ...