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  2. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    Luhn algorithm. The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in US patent 2950048A, granted on 23 August 1960. [1]

  3. Smith & Wesson Model 10 - Wikipedia

    en.wikipedia.org/wiki/Smith_&_Wesson_Model_10

    The Smith & Wesson Model 10, previously known as the Smith & Wesson .38 Hand Ejector Model of 1899, the Smith & Wesson Military & Policeor the Smith & Wesson Victory Model, is a K-frame[2]revolverof worldwide popularity. In production since 1899, the Model 10 is a six-shot, .38 Special, double-actionrevolver with fixed sights.

  4. Modular arithmetic - Wikipedia

    en.wikipedia.org/wiki/Modular_arithmetic

    Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus. The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book Disquisitiones ...

  5. Giffords group commits $15 million to boost Harris and gun ...

    www.aol.com/news/giffords-gun-safety-group...

    Brown declined to comment on the fact that Harris is vetting a co-founder of the group, Sen. Mark Kelly, D-Ariz., former Rep. Giffords’ husband, saying it isn’t getting involved in “the vice ...

  6. SR-25 - Wikipedia

    en.wikipedia.org/wiki/SR-25

    10- and 20-round detachable SR-25 pattern box magazine. The SR-25 (Stoner Rifle-25) [1] is a designated marksman rifle and semi-automatic sniper rifle designed by Eugene Stoner and manufactured by Knight's Armament Company. [1] The SR-25 uses a rotating bolt and a direct impingement gas system. It is loosely based on Stoner's AR-10, rebuilt in ...

  7. List of United States fighter aircraft - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    2 converted from VE-7 for U.S. Army; 22 built for the U.S. Army, 17 built for the U.S. Navy. Unknown Unknown 24 17 HA: Fighter/mail plane: Curtiss Aeroplane and Motor Company 1918 Unknown 6 18T Kirkham: Two-seated fighter triplane Curtiss Engineering Corporation: Intended to protect bombing aircraft over France. 1918 1919 Unknown M-8

  8. Flip-flop (electronics) - Wikipedia

    en.wikipedia.org/wiki/Flip-flop_(electronics)

    Flip-flop (electronics) A SR latch ( R1, R2 = 1 kΩ; R3, R4 = 10 kΩ) In electronics, flip-flops and latches are circuits that have two stable states that can store state information – a bistable multivibrator. The circuit can be made to change state by signals applied to one or more control inputs and will output its state (often along with ...

  9. Modulo - Wikipedia

    en.wikipedia.org/wiki/Modulo

    Modulo. In computing, the modulo operation returns the remainder or signed remainder of a division, after one number is divided by another (called the modulus of the operation). Given two positive numbers a and n, a modulo n (often abbreviated as a mod n) is the remainder of the Euclidean division of a by n, where a is the dividend and n is the ...