Compass software encyclopedia

The compass is one of the four great inventions of ancient China and one of the necessary conditions for the development of navigation technology. Nowadays, mobile phones generally have a compass function, which does not use a magnetic needle, but tests the direction of the magnetic field based on the "Hall effect". Simply put, it determines the direction of the magnetic field based on the influence of the current in the magnetic field. There is also the Compass stock software with the same name, which was awarded the No. 1 brand in customer satisfaction in China's securities information service industry in 2011. It provides self-selected stock quotes, A-share quotes, market panoramic analysis, etc., so both novices and veterans can get started quickly.
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Compass software encyclopedia

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The compass is one of the four great inventions of ancient China and one of the necessary conditions for the development of navigation technology. Nowadays, mobile phones generally have a compass function, which does not use a magnetic needle, but tests the direction of the magnetic field based on the "Hall effect". Simply put, it determines the direction of the magnetic field based on the influence of the current in the magnetic field. There is also the Compass stock software with the same name, which was awarded the No. 1 brand in customer satisfaction in China's securities information service industry in 2011. It provides self-selected stock quotes, A-share quotes, market panoramic analysis, etc., so both novices and veterans can get started quickly.