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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. [5] [6] [7] 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; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  3. Pulse generator - Wikipedia

    en.wikipedia.org/wiki/Pulse_generator

    For example, the pulse repetition rate and duration may be digitally controlled but the pulse amplitude and rise and fall times may be determined by analog circuitry in the output stage of the pulse generator. With correct adjustment, pulse generators can also produce a 50% duty cycle square wave. Pulse generators are generally single-channel ...

  4. Radioisotope thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Radioisotope...

    Diagram of an RTG used on the Cassini probe. A radioisotope thermoelectric generator (RTG, RITEG), sometimes referred to as a radioisotope power system (RPS), is a type of nuclear battery that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity by the Seebeck effect.

  5. 1968 United States presidential election - Wikipedia

    en.wikipedia.org/wiki/1968_United_States...

    The 1968 United States presidential election was the 46th quadrennial presidential election, held on Tuesday, November 5, 1968.The Republican nominee, former vice president Richard Nixon, defeated both the Democratic nominee, incumbent vice president Hubert Humphrey, and the American Independent Party nominee, former Alabama governor George Wallace.

  6. Black Dahlia - Wikipedia

    en.wikipedia.org/wiki/Black_Dahlia

    Elizabeth Short (July 29, 1924 – c. January 14–15, 1947), known as the Black Dahlia, was an American woman found murdered in the Leimert Park neighborhood of Los Angeles, California, on January 15, 1947.

  7. Rolling code - Wikipedia

    en.wikipedia.org/wiki/Rolling_code

    Simple remote control systems use a fixed code word; the code word that opens the gate today will also open the gate tomorrow. An attacker with an appropriate receiver could discover the code word and use it to gain access sometime later. More sophisticated remote control systems use a rolling code (or hopping code) that changes for every use.

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