Apple mobile device usb composite device

#APPLE MOBILE DEVICE USB COMPOSITE DEVICE SERIAL#
#APPLE MOBILE DEVICE USB COMPOSITE DEVICE FULL#
#APPLE MOBILE DEVICE USB COMPOSITE DEVICE PORTABLE#

The USB interface is generalized with no signal lines dedicated to only one function of one device.A USB interface can be designed to provide the best available latency for time-critical functions or can be set up to do background transfers of bulk data with little impact on system resources.The wide range of transfer speeds available from a USB interface suits devices ranging from keyboards and mice up to streaming video interfaces.The USB standard eliminates the requirement to develop proprietary interfaces to new peripherals.

The USB standard also provides multiple benefits for hardware manufacturers and software developers, specifically in the relative ease of implementation: When a user plugs a device into a port on a running computer, it either entirely automatically configures using existing device drivers, or the system prompts the user to locate a driver, which it then installs and configures automatically.

Installing a device that relies on the USB standard requires minimal operator action.

The USB interface defines protocols for recovery from common errors, improving reliability over previous interfaces.

Because use of the USB logo is only permitted after compliance testing, the user can have confidence that a USB device will work as expected without extensive interaction with settings and configuration.

Small devices can be powered directly from the USB interface, eliminating the need for additional power supply cables.

The USB interface is hot-swappable (devices can be exchanged without rebooting the host computer).

As such, USB devices often do not have user-adjustable interface settings.

#APPLE MOBILE DEVICE USB COMPOSITE DEVICE FULL#

USB takes full advantage of the additional processing power that can be economically put into peripheral devices so that they can manage themselves.

USB connectors are standardized at the host, so any peripheral can use most available receptacles.

The USB interface is self-configuring, eliminating the need for the user to adjust the device's settings for speed or data format, or configure interrupts, input/output addresses, or direct memory access channels.

ДЇrom the computer user's perspective, the USB interface improves ease of use in several ways:

#APPLE MOBILE DEVICE USB COMPOSITE DEVICE SERIAL#

The Universal Serial Bus was developed to simplify and improve the interface between personal computers and peripheral devices, when compared with previously existing standard or ad hoc proprietary interfaces. Further diagrams and discussion of plugs and receptacles can be found in the main article above. This section is intended to allow fast identification of USB receptacles (sockets) on equipment. USB-A 3.1 Gen 1 (formerly known as USBВ 3.0 later renamed USBВ 3.1 Gen 1) ports

#APPLE MOBILE DEVICE USB COMPOSITE DEVICE PORTABLE#

USB connectors have been increasingly replacing other types as charging cables of portable devices. Examples of peripherals that are connected via USB include computer keyboards and mice, video cameras, printers, portable media players, mobile (portable) digital telephones, disk drives, and network adapters. It has largely replaced interfaces such as serial ports and parallel ports, and has become commonplace on a wide range of devices. USB was designed to standardize the connection of peripherals to personal computers, both to communicate with and to supply electric power.

12 Comparisons with other connection methods.

Apple mobile device usb composite device