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  2. LED circuit - Wikipedia

    en.wikipedia.org/wiki/LED_circuit

    Direct drive is the simplest-to-understand approach—it uses many independent single-LED (or single-string) circuits. For example, a person could design a digital clock such that when the clock displays "12:34" on a seven-segment display , the clock would turn on the appropriate segments directly and leave them on until something else needs to ...

  3. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.

  4. Stack light - Wikipedia

    en.wikipedia.org/wiki/Stack_light

    Stack light in automated production for in-line quality inspection. Stack lights (also known as signal tower lights, indicator lights, andon lights, warning lights, industrial signal lights, or tower lights) are commonly used on equipment in industrial manufacturing and process control environments to provide visual and audible indicators of a machine's status to machine operators, technicians ...

  5. Drive testing - Wikipedia

    en.wikipedia.org/wiki/Drive_testing

    RF Drive testing is a method of measuring and assessing the coverage, capacity and Quality of Service (QoS) of a mobile radio network.. The technique consists of using a motor vehicle containing mobile radio network air interface measurement equipment that can detect and record a wide variety of the physical and virtual parameters of mobile cellular service in a given geographical area.

  6. Test light - Wikipedia

    en.wikipedia.org/wiki/Test_light

    A test light, test lamp, voltage tester, or mains tester is a piece of electronic test equipment used to determine the presence of electricity in a piece of equipment under test. A test light is simpler and less costly than a measuring instrument such as a multimeter , and often suffices for checking for the presence of voltage on a conductor.

  7. Timeline of the Space Race - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_Space_Race

    This list is limited to first achievements by the USSR and USA which were important during the Space Race in terms of public perception and/or technical innovation. This excludes first uses of specific on-board equipment and new scientific discoveries, or achievements by other countries.

  8. Test Drive 4 - Wikipedia

    en.wikipedia.org/wiki/Test_Drive_4

    The player (shown driving a 1966 Shelby Cobra) in third place during a race at Keswick, Cumbria. Test Drive 4 offers 14 supercars and muscle cars, and tasks the player with beating computer opponents in tracks set in five real life locales: Keswick, Cumbria, San Francisco, Bern, Kyoto, and Washington, D.C.; [1] the Windows version adds a sixth location: Munich.

  9. Test-and-set - Wikipedia

    en.wikipedia.org/wiki/Test-and-set

    If at this point, CPU 2 issues a test-and-set to memory location A, the DPRAM detects the special flag value, and as in Variation 1, issues a BUSY interrupt. Whether or not CPU 2 was trying to access the memory location, the DPRAM now performs CPU 1's test. If the test succeeds, the DPRAM sets memory location A to the value specified by CPU 1.