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A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threaded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.
The Casio FX-7000G is a calculator which is widely known as being the world's first graphing calculator available to the public. It was introduced to the public and later manufactured between 1985 and c. 1988. [2] Notable features are its ability to graph functions, [3] and that it is programmable.
Battery life for the primary power cells ranges from 300 hours (LR03 battery) to 200 hours (R03 battery) for continuous display of main menu. Backup cells last up to about 2 years each. The calculators weigh about 190 grams including batteries , and measure about 19.7 mm x 83 mm x 176 mm. Features include scientific calculations , including ...
The battery compartment at the top can hold two button cells. Inside a Casio scientific calculator from the mid-1990s, showing the processor chip (small square; top-middle; left), keypad contacts, right (with matching contacts on the left), the back of the LCD (top; marked 4L102E), battery compartment, and other components.
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Christmas Eve is not a designated federal holiday. Still, U.S. presidents, including Joe Biden and Donald Trump, have used the holiday to grant a day off to the country's more than 2 million ...
A smart battery or a smart battery pack is a rechargeable battery pack with a built-in battery management system (BMS), usually designed for use in a portable computer such as a laptop. [ 1 ] [ 2 ] In addition to the usual positive and negative terminals, a smart battery has two or more terminals to connect to the BMS; typically the negative ...
Elon Musk and Vivek Ramaswamy will head to Capitol Hill next week to meet with House Republicans on their plan to slash regulations and other parts of the federal government. Speaker Mike Johnson ...
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