The difference between nfc and Bluetooth

Cell phone NFC and Bluetooth has now been very widely used, the principle is the radio transmission technology, but they have a fundamental difference.
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What is a discrete graphics card

Discrete graphics card refers to a graphics card that exists as an independent board and needs to be inserted into the corresponding interface on the motherboard. Discrete graphics card has independent video memory, does not occupy system memory, and is technically ahead of integrated graphics card, which can provide better display effect and operating performance. Discrete graphics cards are divided into built-in discrete graphics cards and external graphics cards. As an important part of the computer host, the graphics card is very important for those who like to play games and engage in professional graphic design. At present, the suppliers of graphics chips for civilian graphics cards mainly include AMD (formerly ATI) and nVIDIA.
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Who is more secure, fingerprint recognition or password?

Fingerprint, security, password, identification Nowadays fingerprint recognition technology is not a new technology, not only smart phones, even the door locks at home have also started to use fingerprint recognition technology.
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Which one to choose for mobile power? Analysis of the three major types of battery cells

With the popularity of a variety of smart phones, tablet machines, more and more people find that a variety of digital products, especially cell phones own power has been unable to meet the need for life time in daily use, and the emergence of mobile power can be said to a certain extent to solve the problem.
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What are the Wi-Fi password security levels?

After paying attention to the Wi-Fi signal strength you also need to pay attention to the Wi-Fi security level, which can help prevent information loss and even prevent scraping behavior.
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The difference between SLR and digital cameras

SLR digital cameras and we are more in contact with the ordinary consumer digital cameras are two completely different systems, the difference here is mainly reflected in the internal structure of the two.
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What kind of technology is machine vision technology?

Machine vision technology aims to simulate and emulate the human visual system through algorithms and models that enable computers to "see" and understand information in images or videos.
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Internet era! How to prevent personal information leakage

With the advent of the information explosion era, as long as an inadvertent action may leak information.
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What is cross-site scripting attack

Cross-site scripting attacks are a common network security vulnerability in which an attacker injects malicious scripting code into a trusted website, causing the browser to execute the malicious code on the user's end
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Cell phone "a daily charge" and "no power to recharge", which is more harmful to the battery?

Cell phone battery is an important part of the phone, and its life and capacity directly affect the experience of using the phone. So, how should we charge the phone properly?
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