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  2. iPad (1st generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_(1st_generation)

    The only major change to the device between its announcement and being available to pre-order was the change of the behavior of the side switch from sound muting to that of a screen rotation lock. [23] The Wi-Fi version of the iPad went on sale in the United States on April 3, 2010. [22] [24] The Wi-Fi + 3G version was released on April 30.

  3. Power symbol - Wikipedia

    en.wikipedia.org/wiki/Power_symbol

    The switch does not fully disconnect the device from its power supply. This may appear on a toggle switch opposite a power on symbol, alone on a pushbutton that places the device into a standby state, or alone on a button that switches between on and standby. Alternatively, under IEEE 1621, this symbol simply means "power". [9]

  4. Lightning (connector) - Wikipedia

    en.wikipedia.org/wiki/Lightning_(connector)

    The Lightning connector is reversible. The plug is indented on each side to match up with corresponding points inside the receptacle to retain the connection. [1] In 2018, Apple began transitioning to USB-C on iPad Pros and accessories. In response to legislation to standardize charging ports passed in 2022, Apple said it would comply with ...

  5. iPad - Wikipedia

    en.wikipedia.org/wiki/IPad

    iPad Front face of the last generation's flagship model, the iPad Pro (5th generation) Developer Apple Manufacturer Foxconn (on contract) Pegatron Type Tablet computer Release date April 3, 2010 ; 14 years ago (April 3, 2010) (1st generation) Units sold 677.7 million (as of 2022) Operating system iOS (2010–2019) iPadOS (2019–present) Connectivity WiFi, cellular, 30-pin dock connector ...

  6. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    Meaning Steady, short beeps Power supply may be bad Long continuous beep tone Memory failure Steady, long beeps Power supply bad No beep Power supply bad, system not plugged in, or power not turned on No beep If everything seems to be functioning correctly there may be a problem with the 'beeper' itself. The system will normally beep one short ...

  7. Touch switch - Wikipedia

    en.wikipedia.org/wiki/Touch_switch

    A touch switch is a type of switch that only has to be touched by an object to operate. It is used in many lamps and wall switches that have a metal exterior as well as on public computer terminals. A touchscreen includes an array of touch switches on a display. A touch switch is the simplest kind of tactile sensor.

  8. Transfer switch - Wikipedia

    en.wikipedia.org/wiki/Transfer_switch

    One example is an open transition automatic transfer switch (ATS). During the split second of the power transfer the flow of electricity is interrupted. Another example is a manual three position switch or circuit breaker, with utility power on one side, the generator on the other, and "off" in the middle, which requires the user to switch ...

  9. iPad Mini 2 - Wikipedia

    en.wikipedia.org/wiki/IPad_Mini_2

    The iPad Mini 2 (formerly marketed as the iPad mini with Retina display, [2] officially iPad mini 2 with Retina display [3]) is a tablet computer designed and marketed by Apple Inc. It has a nearly identical design to its predecessor, the first-generation iPad Mini , but features internal revisions such as the use of an A7 system-on-a-chip and ...