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  2. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    A USB cable, by definition, has a plug on each end—one A (or C) and one B (or C)—and the corresponding receptacle is usually on a computer or electronic device. The mini and micro formats may connect to an AB receptacle, which accepts either an A or a B plug, that plug determining the behavior of the receptacle.

  3. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    USB device communication is based on pipes (logical channels). A pipe is a connection from the host controller to a logical entity within a device, called an endpoint. Because pipes correspond to endpoints, the terms are sometimes used interchangeably. Each USB device can have up to 32 endpoints (16 in and 16 out), though it is rare to have so ...

  4. Security token - Wikipedia

    en.wikipedia.org/wiki/Security_token

    A GoldKey security token connected to a laptop. A security token is a peripheral device used to gain access to an electronically restricted resource. The token is used in addition to, or in place of, a password. [ 1] Examples of security tokens include wireless key cards used to open locked doors, a banking token used as a digital authenticator ...

  5. Touch ID - Wikipedia

    en.wikipedia.org/wiki/Touch_ID

    Touch ID is an electronic fingerprint recognition feature designed and released by Apple Inc. that allows users to unlock devices, make purchases in the various Apple digital media stores ( iTunes Store, App Store, and Apple Books Store ), and authenticate Apple Pay online or in apps. It can also be used to lock and unlock password-protected ...

  6. DI unit - Wikipedia

    en.wikipedia.org/wiki/DI_unit

    DI unit. A professional passive DI box. It is passive because it does not need external power to operate. DI boxes which require a power source (batteries or phantom power) are called active DI boxes. A DI unit (direct input or direct inject) is an electronic device typically used in recording studios and in sound reinforcement systems to ...

  7. USB communications - Wikipedia

    en.wikipedia.org/wiki/USB_communications

    The idle line state is when the device is connected to the host with a pull-up on either D+ (for full speed USB 1.x) or D− (for low speed USB 1.x), with transmitter output on both host and device is set to high impedance (hi-Z) (disconnected output). A USB device pulls one of the data lines high with a 1.5 kΩ resistor.

  8. Top US carriers say roaming customers facing ... - AOL

    www.aol.com/news/top-us-carriers-roaming...

    June 27, 2024 at 11:49 AM. (Reuters) - Major U.S. telecom service providers said on Thursday some of their users traveling overseas were having connectivity problems due to an issue at a partner ...

  9. Samsung Galaxy S21 - Wikipedia

    en.wikipedia.org/wiki/Samsung_Galaxy_S21

    The Samsung Galaxy S21 is a series of high-end Android-based smartphones designed, developed, marketed, and manufactured by Samsung Electronics as part of its Galaxy S series. They collectively serve as the successor to the Samsung Galaxy S20 series. The first three smartphones were unveiled at Samsung's Galaxy Unpacked event on 14 January 2021 ...