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  2. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    The most significant technical differences between FireWire and USB include: USB networks use a tiered-star topology, while IEEE 1394 networks use a tree topology. USB 1.0, 1.1, and 2.0 use a "speak-when-spoken-to" protocol, meaning that each peripheral communicates with the host when the host specifically requests it to communicate.

  3. Smartphone - Wikipedia

    en.wikipedia.org/wiki/Smartphone

    In March 1996, Hewlett-Packard released the OmniGo 700LX, a modified HP 200LX palmtop PC with a Nokia 2110 mobile phone piggybacked onto it and ROM-based software to support it. It had a 640×200 resolution CGA compatible four-shade gray-scale LCD screen and could be used to place and receive calls, and to create and receive text messages ...

  4. Mobile operating system - Wikipedia

    en.wikipedia.org/wiki/Mobile_operating_system

    A mobile operating system is an operating system for mobile phones, tablets, smartwatches, smartglasses, or other non-laptop personal mobile computing devices.While computers such as typical laptops are "mobile", the operating systems used on them are generally not considered mobile ones, as they were originally designed for desktop computers that historically did not have or need specific ...

  5. Character encoding - Wikipedia

    en.wikipedia.org/wiki/Character_encoding

    A code point is represented by a sequence of code units. The mapping is defined by the encoding. Thus, the number of code units required to represent a code point depends on the encoding: UTF-8: code points map to a sequence of one, two, three or four code units. UTF-16: code units are twice as long as 8-bit code units. Therefore, any code ...

  6. NSA warrantless surveillance (2001–2007) - Wikipedia

    en.wikipedia.org/wiki/NSA_warrantless...

    Once Mark Klein, a retired AT&T communications technician, submitted an affidavit describing technical details known to him personally in support of the 2006 Hepting v. AT&T court case . [109] [110]

  7. Personal computer - Wikipedia

    en.wikipedia.org/wiki/Personal_computer

    The demonstration required technical support staff and a mainframe time-sharing computer that were far too costly for individual business use at the time. Early personal computers‍—‌generally called microcomputers‍—‌were often sold in a kit form and in limited volumes, and were of interest mostly to hobbyists and technicians.

  8. Facebook - Wikipedia

    en.wikipedia.org/wiki/Facebook

    The highest number of Facebook users as of October 2018 are from India and the United States, followed by Indonesia, Brazil and Mexico. Region-wise, the highest number of users are from Asia-Pacific (947 million) followed by Europe (381 million) and US-Canada (242 million). The rest of the world has 750 million users.

  9. List of iOS, iPadOS, tvOS, and watchOS devices - Wikipedia

    en.wikipedia.org/wiki/List_of_iOS,_iPadOS,_tvOS...

    Apple Pencil Support First generation No Keyboard Support Bluetooth Keyboard Yes Smart Keyboard No Yes No Smart Keyboard Folio No Magic Keyboard No Magic Keyboard Folio Yes No Sensors LiDAR Scanner No Three-axis gyro Yes Accelerometer Yes Ambient Light Sensor Yes Barometer Yes Rear Camera Camera 12 MP Wide 8 MP Wide Aperture f/1.8 f/2.4