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2. Dell - Wikipedia

   en.wikipedia.org/wiki/Dell

   Dell is a subsidiary of Dell Technologies, Inc., a publicly traded company, as well as a component of the NASDAQ-100 and S&P 500. Dell is ranked 31st on the Fortune 500 list in 2022, [8] up from 76th in 2021. [9] It is also the sixth-largest company in Texas by total revenue, according to Fortune magazine.

3. Pulse-width modulation - Wikipedia

   en.wikipedia.org/wiki/Pulse-width_modulation

   When a digital signal spends more time in the on state than the off state, it has a duty cycle of >50%. When a digital signal spends more time in the off state than the on state, it has a duty cycle of <50%. Here is a pictorial that illustrates these three scenarios: History. The Corliss steam engine was patented in 1849. It used pulse-width ...

4. Google Search - Wikipedia

   en.wikipedia.org/wiki/Google_Search

   C++ [2] Google Search (also known simply as Google or Google.com) is a search engine operated by Google. It allows users to search for information on the Internet by entering keywords or phrases. Google Search uses algorithms to analyze and rank websites based on their relevance to the search query. It is the most popular search engine worldwide.

5. Computer fan control - Wikipedia

   en.wikipedia.org/wiki/Computer_fan_control

   The control signal is a square wave operating at 25 kHz, with the duty cycle determining the fan speed. 25 kHz is used to raise the sound of the signal above the range of human hearing; use of a lower frequency could produce an audible hum or whine. Typically a fan can be driven between about 30% and 100% of the rated fan speed, using a signal ...

6. OLED - Wikipedia

   en.wikipedia.org/wiki/OLED

   Dell. On 6 January 2016, Dell announced the Ultrasharp UP3017Q OLED monitor at the Consumer Electronics Show in Las Vegas. The monitor was announced to feature a 30-inch (76 cm) 4K UHD OLED panel with a 120 Hz refresh rate, 0.1 millisecond response time, and a contrast ratio of 400,000:1. The monitor was set to sell at a price of $4,999 and ...

7. Liquid-crystal display - Wikipedia

   en.wikipedia.org/wiki/Liquid-crystal_display

   A liquid-crystal display ( LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly [1] but instead use a backlight or reflector to produce images in color or monochrome.

8. ECC memory - Wikipedia

   en.wikipedia.org/wiki/ECC_memory

   Early research attempted to minimize the area and delay overheads of ECC circuits. Hamming first demonstrated that SEC-DED codes were possible with one particular check matrix. Hsiao showed that an alternative matrix with odd weight columns provides SEC-DED capability with less hardware area and shorter delay than traditional Hamming SEC-DED codes.

9. Space Shuttle Solid Rocket Booster - Wikipedia

   en.wikipedia.org/wiki/Space_Shuttle_Solid_Rocket...

   242 seconds (2.37 km/s) Burn time. 123 s. Propellant. PBAN - APCP. The Space Shuttle Solid Rocket Booster ( SRB) was the first solid-propellant rocket to be used for primary propulsion on a vehicle used for human spaceflight. [1] A pair of these provided 85% of the Space Shuttle 's thrust at liftoff and for the first two minutes of ascent.