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2. Broadcast television systems - Wikipedia

   en.wikipedia.org/wiki/Broadcast_television_systems

   Broadcast television systems (or terrestrial television systems outside the US and Canada) are the encoding or formatting systems for the transmission and reception of terrestrial television signals. Analog television systems were standardized by the International Telecommunication Union (ITU) in 1961, [1] with each system designated by a ...

3. QRS complex - Wikipedia

   en.wikipedia.org/wiki/QRS_complex

   QRS complex. Schematic representation of a normal sinus rhythm ECG wave. Diagram showing how the polarity of the QRS complex in leads I, II, and III can be used to estimate the heart's electrical axis in the frontal plane. The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG).

4. 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 ...

5. CSA Group - Wikipedia

   en.wikipedia.org/wiki/CSA_Group

   Website. www.csagroup.org. The CSA Group (formerly the Canadian Standards Association; CSA) is a standards organization which develops standards in 57 areas. CSA publishes standards in print and electronic form, and provides training and advisory services. CSA is composed of representatives from industry, government, and consumer groups.

6. Nearly 100 people aboard P&O cruise ship sick in norovirus ...

   www.aol.com/75-people-aboard-p-o-152520993.html

   Updated September 24, 2024 at 2:35 PM. (This story was updated to add new information.) Nearly 100 people on a P&O Cruises sailing got sick in a norovirus outbreak. Among 1,959 passengers on the ...

7. Radio-frequency identification - Wikipedia

   en.wikipedia.org/wiki/Radio-frequency_identification

   Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by an electromagnetic interrogation pulse from a nearby RFID reader device, the tag transmits ...