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  2. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

  3. Call of Duty 4: Modern Warfare - Wikipedia

    en.wikipedia.org/wiki/Call_of_Duty_4:_Modern_Warfare

    Call of Duty 4: Modern Warfare. Call of Duty 4: Modern Warfare is a 2007 first-person shooter video game developed by Infinity Ward and published by Activision. It is the fourth main installment in the Call of Duty series. The game breaks away from the World War II setting of previous entries and is instead set in modern times.

  4. Konami Code - Wikipedia

    en.wikipedia.org/wiki/Konami_Code

    The Konami Code was first used in the release of Gradius (1986), a scrolling shooter for the NES [11] and was popularized among North American players in the NES version of Contra. The code is also known as the "Contra Code" and "30 Lives Code", since the code provided the player 30 extra lives in Contra. The code has been used to help novice ...

  5. Call of Duty 4: Modern Warfare (Nintendo DS) - Wikipedia

    en.wikipedia.org/wiki/Call_of_Duty_4:_Modern...

    Single-player, multiplayer. Call of Duty 4: Modern Warfare is a first-person shooter video game in the Call of Duty franchise, developed specifically for the Nintendo DS. It was released by Activision in November 2007. The game features many elements of gameplay typical to the series, including vehicular missions and the usage of iron sights.

  6. List of random number generators - Wikipedia

    en.wikipedia.org/wiki/List_of_random_number...

    However, generally they are considerably slower (typically by a factor 2–10) than fast, non-cryptographic random number generators. These include: Stream ciphers. Popular choices are Salsa20 or ChaCha (often with the number of rounds reduced to 8 for speed), ISAAC, HC-128 and RC4. Block ciphers in counter mode.

  7. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.

  8. US cities with the most homes under $200,000 - AOL

    www.aol.com/finance/us-cities-most-homes-under...

    THE LEAST AFFORDABLE CITIES FOR POTENTIAL HOMEBUYERS. Median list price: $90,000. Number of listings under $200,000: 1,586. Percentage of listings under $200,000: 64%. Median list price: $161,194 ...

  9. Key derivation function - Wikipedia

    en.wikipedia.org/wiki/Key_derivation_function

    Example of a Key Derivation Function chain. The output of one KDF function is the input to the next KDF function in the chain. In cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudorandom function (which typically uses a cryptographic hash function or ...