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  2. Rotational frequency - Wikipedia

    en.wikipedia.org/wiki/Rotational_frequency

    Rotational frequency, also known as rotational speed or rate of rotation (symbols ν, lowercase Greek nu, and also n), is the frequency of rotation of an object around an axis. Its SI unit is the reciprocal seconds (s −1 ); other common units of measurement include the hertz (Hz), cycles per second (cps), and revolutions per minute (rpm).

  3. Computer fan control - Wikipedia

    en.wikipedia.org/wiki/Computer_fan_control

    At the top of the case is a fan controller. Fan control is the management of the rotational speed of an electric fan. In computers, various types of computer fans are used to provide adequate cooling, and different fan control mechanisms balance their cooling capacities and noise they generate. This is commonly accomplished by the motherboards ...

  4. Dell Inspiron - Wikipedia

    en.wikipedia.org/wiki/Dell_Inspiron

    Dell Inspiron. Inspiron (/ ˈɪnspɪrɒn / IN-spirr-on, formerly stylized as inspiron) is a line of consumer-oriented laptop computers, desktop computers and all-in-one computers sold by Dell. [1] The Inspiron range mainly competes against Acer 's Aspire; Asus 's Transformer Book Flip, VivoBook and Zenbook; HP 's Pavilion, Stream, and ENVY ...

  5. Dell laptops - Wikipedia

    en.wikipedia.org/wiki/Dell_laptops

    The first Dell laptop was the Dell 316LT, launched in 1989. Dell is a well-known brand that produces a range of laptops for various types of users. Dell laptops come in a variety of models with different specifications, designs, and price points. Dell laptops are known for their reliability, making them a popular choice for both personal and ...

  6. Revolutions per minute - Wikipedia

    en.wikipedia.org/wiki/Revolutions_per_minute

    1 / 60 ⁠ Hz = 0.01 6 Hz. SI base units. 0.01 6 s −1. Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or r⋅min−1) is a unit of rotational speed (or rotational frequency) for rotating machines. One revolution per minute is equivalent to ⁠ 1 60 ⁠ hertz.

  7. Dell Inspiron 1525 - Wikipedia

    en.wikipedia.org/wiki/Dell_Inspiron_1525

    The most notable difference between this laptop and its predecessor is the 1520 model's dedicated graphics card, which the 1525 model did not have. Some believe that this was an attempt by Dell to appeal to a wider market of computer consumers. In a 2008 processor speed test, the Inspiron 1525 placed 14 out of the 18 tested computers. [6]

  8. Dell Inspiron laptops - Wikipedia

    en.wikipedia.org/wiki/Dell_Inspiron_laptops

    Released in 2000, the Dell Inspiron 4000 was a lightweight laptop that Dell branded as "Ultra-Thin & Light" and "Light as a feather, strong as an ox". Its starting price was $1,499. Equivalent models of the 4000 were the Dell Latitude C500, C510, and C600. Processor: Intel Pentium III @650, 700, 800 or 850 MHz, or an Intel Celeron @600 MHz.

  9. Pointing stick - Wikipedia

    en.wikipedia.org/wiki/Pointing_stick

    A pointing stick (or trackpoint, also referred to generically as a nub or nipple) is a small analog stick used as a pointing device typically mounted centrally in a computer keyboard. Like other pointing devices such as mice, touchpads or trackballs, operating system software translates manipulation of the device into movements of the pointer ...