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  2. List of Fitbit products - Wikipedia

    en.wikipedia.org/wiki/List_of_Fitbit_products

    The Fitbit Classic was a small black and teal device that could be clipped and worn 24/7. It uses a three-dimensional accelerometer to sense user movement. The Tracker measures steps taken as well as user data to calculate distance walked, calories burned, floors climbed, and activity duration and intensity.

  3. Fitbit - Wikipedia

    en.wikipedia.org/wiki/Fitbit

    The Fitbit Charge 3, a wristband health and fitness tracker introduced in October 2018, was the first device to feature an oxygen saturation (SPO2) sensor; however, as of January 2019, it was non-functional and Fitbit did not provide an implementation timeline. [44] The Fitbit Charge 3 comes with two different-sized bands: small and large.

  4. Fitness tracker - Wikipedia

    en.wikipedia.org/wiki/Fitness_tracker

    The Fitbit Charge 3 activity tracker. A fitness tracker or activity tracker is an electronic device or app that measures and collects data about an individual's movements and physical responses, towards the goal of monitoring and improving their health, fitness, or psychological wellness over time.

  5. Error bar - Wikipedia

    en.wikipedia.org/wiki/Error_bar

    This statistics -related article is a stub. You can help Wikipedia by expanding it.

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  7. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    Wire crossover symbols for circuit diagrams. The CAD symbol for insulated crossing wires is the same as the older, non-CAD symbol for non-insulated crossing wires. To avoid confusion, the wire "jump" (semi-circle) symbol for insulated wires in non-CAD schematics is recommended (as opposed to using the CAD-style symbol for no connection), so as to avoid confusion with the original, older style ...

  8. Typographical error - Wikipedia

    en.wikipedia.org/wiki/Typographical_error

    The Wicked Bible The Judas Bible in St. Mary's Church, Totnes, Devon, UK. The Wicked Bible omits the word "not" in the commandment, "thou shalt not commit adultery".. The Judas Bible is a copy of the second folio edition of the authorized version, printed by Robert Barker, printer to James VI and I, in 1613, and given to the church for the use of the Mayor of Totnes.

  9. Intersymbol interference - Wikipedia

    en.wikipedia.org/wiki/Intersymbol_interference

    One of the causes of intersymbol interference is multipath propagation in which a wireless signal from a transmitter reaches the receiver via multiple paths. The causes of this include reflection (for instance, the signal may bounce off buildings), refraction (such as through the foliage of a tree) and atmospheric effects such as atmospheric ducting and ionospheric reflection.