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  2. iPhone 4s - Wikipedia

    en.wikipedia.org/wiki/IPhone_4S

    The iPhone 4s setup screen – it is the first iPhone that does not need to connect to iTunes in order to be activated because iOS 5 introduces features such as iCloud. The iPhone 4s, like other iPhones, runs iOS, Apple's mobile operating system. [34] The user interface of iOS is based on the concept of direct manipulation, using multi-touch ...

  3. iPhone hardware - Wikipedia

    en.wikipedia.org/wiki/IPhone_hardware

    The backs of a gold iPhone 6S, a silver iPhone 6 Plus, and a rose gold iPhone 6S. The iPhone has a minimal hardware user interface, with most models featuring five buttons. The only physical menu button is situated directly below the display and is called the "Home button" because its primary function is to close the active app and navigates to ...

  4. List of common EMC test standards - Wikipedia

    en.wikipedia.org/wiki/List_of_common_EMC_test...

    CISPR is the acronym of Comité International Spécial des Perturbations Radio, [1] or the International Special Committee for Radio Protection of IEC. CISPR Standards aim to the protection of radio reception in the range 9 kHz to 400 GHz from interference caused by operation of electrical or electronic appliances and systems in the electromagnetic environment.

  5. Electromagnetic compatibility - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_compatibility

    Electromagnetic compatibility (EMC) is the ability of electrical equipment and systems to function acceptably in their electromagnetic environment, by limiting the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage to ...

  6. iPhone 5 - Wikipedia

    en.wikipedia.org/wiki/IPhone_5

    The iPhone 4 and iPhone 4s used stainless steel instead of aluminium due to Steve Jobs' preference for the metal which he thought, "looks beautiful when it wears". [47] The iPhone 5 is 18% thinner, 20% lighter, and has 12% less overall volume than its predecessor, the iPhone 4s. [48] The phone's aluminum body is 0.30 in (7.6 mm) thick.

  7. Line Impedance Stabilization Network - Wikipedia

    en.wikipedia.org/wiki/Line_Impedance...

    A line impedance stabilization network (LISN) [1] is a device used in conducted and radiated radio-frequency emission and susceptibility tests, as specified in various electromagnetic compatibility (EMC)/EMI test standards (e.g., by CISPR, International Electrotechnical Commission, CENELEC, U.S. Federal Communications Commission, MIL-STD, DO-160 Sections 20-21-22).