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2. Orfield Laboratories - Wikipedia

   en.wikipedia.org/wiki/Orfield_Laboratories

   Orfield Labs held the 2005 and 2013 Guinness World Record for the quietest place on Earth. Microsoft ’s anechoic chamber in Redmond, Washington eventually beat Orfield. Orfield retook the record in November 2021 with a sound level of (-)24.9 dbA.

3. These Calculators Make Quick Work of Standard Math ... - AOL

   www.aol.com/best-calculators-students...

   The TI-84 Plus is more expensive than most of the other models on this list, but it’s one of the best calculators money can buy. Shop Now. TI-84 Plus CE Graphing Calculator. amazon.com.

4. TI-34 - Wikipedia

   en.wikipedia.org/wiki/TI-34

   It was based on the SR16 design from Kinpo Electronics.. Power sources come from smaller solar cells than the 1994 TI-34, and CR2025 battery. Feature set was based on TI-36X II, but without unit conversions and constants, base calculations, boolean algebra, complex value functions (abs now only works in real numbers), integral calculation, engineering notation display modes, gradian angle mode ...

5. Curta - Wikipedia

   en.wikipedia.org/wiki/Curta

   A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.

6. Solar-powered calculator - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_calculator

   Solar-powered calculators are hand-held electronic calculators powered by solar cells mounted on the device. [1] They were introduced at the end of the 1970s. [2]Amorphous silicon has been used as a photovoltaic solar cell material for devices which require very little power, such as pocket calculators, because their lower performance compared to conventional crystalline silicon solar cells is ...

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!