X7 battery

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Designed for high school and lower-level university math and science courses, the TI-83 Plus features all the functionality of the TI-83«É”TI's most popular graphing calculator«É”enhanced with 160K flash ROM for electronic upgrades and new applications, and 24K RAM. It also has an 8-line, 16-character display, and 7 different graphing styles including such functions as financial, calculus, trigonometry, equation solving, statistical, graphic, forecasting, engineering, logarithms, hyperbolic and slide rule. Batteries and hardcover case are included.
 
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Canon introduces the DK-1000I, a 12 digit mini handheld calculator that provides connectivity from the calculator to your laptop using a USB cable. Have more freedom doing everyday calculations, tax functions and at the same time use your computer for everyday documents. This stylish product is designed with a metallic black finish, trackball and is equipped with a USB storage compartment with the included USB cable. Addition, subtraction multiplication and division. Memory calculation. Percentage add-on and discount calculations. PC link function. Tax calculation. Automatic Power-off - Approx. 7 minutes Power Source - Solar cell and alkaline battery Dimensions - 2.8 x 0.5 x 4.8 inches Weight - 4.29 ounces