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2. Stock market data systems - Wikipedia

   en.wikipedia.org/wiki/Stock_market_data_systems

   Automatic quotation boards. A quotation board is a large vertical electronic display located in a brokerage office, which automatically gives current data on stocks chosen by the local broker. In 1929 the Teleregister Corporation installed the first such display, and by 1964 over 650 brokerage offices had them.

3. QRS Music Technologies - Wikipedia

   en.wikipedia.org/wiki/QRS_Music_Technologies

   QRS Music Technologies. QRS Music Technologies, Inc. is an American company that makes modern player pianos. It was founded as Q•R•S Music Company in 1900 to make piano rolls, the perforated rolls of paper read by player pianos to reproduce music. The company also produced shellac records in the 1920s and 1930s and radios beginning in the ...

4. Alternative display facility - Wikipedia

   en.wikipedia.org/wiki/Alternative_display_facility

   Alternative display facility (ADF) is an equity trading facility created in the United States by the Financial Industry Regulatory Authority (FINRA), a self-regulatory organization (SRO). The ADF is an alternative to the exchange for publishing quotations and for comparing and reporting trades. This differs from a trading facility with ...

5. 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).

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7. Add extra countertops to your kitchen with this $78 storage ...

   www.aol.com/lifestyle/kitchen-island-walmart...

   Each of the three shelves holds up to 88 pounds, making them ideal for storing bulky items, while the 10 hooks on the sides display cooking utensils, kitchen towels, coffee mugs or whatever else ...