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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. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    The first LED was created by Soviet inventor Oleg Losev [9] in 1927, but electroluminescence was already known for 20 years, and relied on a diode made of silicon carbide. ...

  5. 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.

  6. Load line (electronics) - Wikipedia

    en.wikipedia.org/wiki/Load_line_(electronics)

    Diode load line. The curve shows the diode response (I vs V D) while the straight line shows the behaviour of the linear part of the circuit: I=(V DD-V D)/R.The point of intersection gives the actual current and voltage.

  7. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    Floppy-disk drive or adapter 700–799: Math coprocessor 900–999: Parallel printer port 1000–1099: Alternate printer adapter 1100–1299: Asynchronous communication device, adapter, or port 1300–1399: Game port 1400–1499: Color/graphics printer 1500–1599: Synchronous communication device, adapter, or port 1700–1799: Hard drive or ...

  8. Relay logic - Wikipedia

    en.wikipedia.org/wiki/Relay_logic

    The conditions that represent the inputs are connected in series, parallel, or series-parallel to obtain the logic required to drive the output. The relay logic circuit forms an electrical schematic diagram for the control of input and output devices. Relay logic diagrams represent the physical interconnection of devices.

  9. Data and information visualization - Wikipedia

    en.wikipedia.org/wiki/Data_and_information...

    A pie chart or bar chart can show the comparison of ratios, such as the market share represented by competitors in a market. Deviation: Categorical subdivisions are compared against a reference, such as a comparison of actual vs. budget expenses for several departments of a business for a given time period.