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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. App Store (Apple) - Wikipedia

   en.wikipedia.org/wiki/App_Store_(Apple)

   Website. appstore .com. The App Store is an app marketplace developed and maintained by Apple, for mobile apps on its iOS and iPadOS operating systems. The store allows users to browse and download approved apps developed within Apple's iOS SDK. Apps can be downloaded on the iPhone, iPod Touch, or iPad, and some can be transferred to the Apple ...

4. Raised-cosine filter - Wikipedia

   en.wikipedia.org/wiki/Raised-cosine_filter

   The raised-cosine filter is a filter frequently used for pulse-shaping in digital modulation due to its ability to minimise intersymbol interference (ISI). Its name stems from the fact that the non-zero portion of the frequency spectrum of its simplest form ( ) is a cosine function, 'raised' up to sit above the (horizontal) axis.

5. CFM International LEAP - Wikipedia

   en.wikipedia.org/wiki/CFM_International_LEAP

   Developed into. General Electric Passport. The CFM International LEAP ("Leading Edge Aviation Propulsion") is a high-bypass turbofan engine produced by CFM International, a 50–50 joint venture between American GE Aerospace and French Safran Aircraft Engines. It is the successor of the CFM56 and competes with the Pratt & Whitney PW1000G to ...

6. Droop speed control - Wikipedia

   en.wikipedia.org/wiki/Droop_speed_control

   Droop speed control is a control mode used for AC electrical power generators, whereby the power output of a generator reduces as the line frequency increases. It is commonly used as the speed control mode of the governor of a prime mover driving a synchronous generator connected to an electrical grid. It works by controlling the rate of power ...

7. 2021 in American television - Wikipedia

   en.wikipedia.org/wiki/2021_in_American_television

   Date Event Source 1 Gray Television announces its intent to acquire Quincy Media's broadcasting properties for $925 million. The deal—which was completed on August 2—saw Gray acquire eleven television (and two radio) stations, which was to have expanded its portfolio to 198 TV outlets in 102 markets with a collective reach of 25.4% of U.S. television households (as estimated prior to Gray ...