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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. 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 ...

  4. AN/TPQ-37 Firefinder radar - Wikipedia

    en.wikipedia.org/wiki/AN/TPQ-37_Firefinder_radar

    AN/TPQ-37 Firefinder radar. Hughes AN/TPQ-37 Firefinder Weapon Locating System[ 1] is a mobile radar system developed in the late 1970s by Hughes Aircraft Company, achieving Initial Operational Capability in 1980 and full deployment in 1984. Currently manufactured by ThalesRaytheonSystems, the system is a long-range version of "weapon-locating ...

  5. 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.

  6. 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 ...

  7. Lockheed Model 10 Electra - Wikipedia

    en.wikipedia.org/wiki/Lockheed_Model_10_Electra

    Lockheed Model 14 Super Electra. The Lockheed Model 10 Electra is an American twin-engined, all-metal monoplane airliner developed by the Lockheed Aircraft Corporation, which was produced primarily in the 1930s to compete with the Boeing 247 and Douglas DC-2. The type gained considerable fame as one was flown by Amelia Earhart and Fred Noonan ...

  8. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    v: finish: A letter v (Latin small letter v) written on a line representing a surface is a way to indicate that the surface is to be machined rather than left in the as-cast or as-forged state. The older symbol for this was a small script (italic) f (see herein f). Later the ASA convened upon a letter V (specifically a sans-serif V) touching ...

  9. EV Battery Manufacturer QuantumScape Stock Is Soaring On ...

    www.aol.com/ev-battery-manufacturer-quantumscape...

    On Thursday, Volkswagen Group’s battery company PowerCo and QuantumScape Corp (NASDAQ:QS) have agreed to industrialize QuantumScape’s next-generation solid-state lithium-metal battery technology.