QR code is a new generation of barcode technology that uses specific geometric figures distributed in black and white or colored rectangular square arrays on a two-dimensional plane according to certain rules to record data symbol information. It looks like a Two-color square maze.
In terms of information expression, QR codes can express different information simultaneously in both horizontal and vertical directions. The amount of information that can be stored is dozens of times that of bar codes, and it can integrate images, sounds, text and other information. ; In terms of function, QR codes not only have basic identification functions and are easy to read, but can also display more detailed product content and save paper.
There are many types of QR codes. The most common QR code was invented by Denso-Wave Company in 1994. QR is the abbreviation of Quick Response in English. Obviously, the inventor hopes that the QR code can quickly decode its content, which is also the most significant feature of the current QR code.
QR codes also have the characteristics of good confidentiality, low production cost, large capacity, and wide coding range. It has an error correction function. Even if the QR code has a damaged area of ??50%, it can still recover the information and be read correctly. Its decoding reliability is high, and the error rate is no more than one in ten million.
In addition to being widely used in various fields such as document information storage, logistics and transportation management, identity recognition, multimedia reading, online shopping, instant dating software, advertising and marketing, and electronic bills, QR codes also have some more novel ones. Application methods are constantly being discovered.
A family farm in Lacombe, Alberta, Canada, applied for certification of a bizarre corn maze, becoming the largest usable corn maze in the Guinness Book of World Records. QR code. This corn maze covers an area of ??28,760 square meters. If someone takes a helicopter and scans the maze pattern with a smartphone above the corn maze, it will automatically jump to the farm's exclusive website. Originally a tool for identifying business information, it became interesting.
QR code house number. Panyu District in Guangzhou recently innovatively developed and trialed a "smartphone inspection system for rental houses". When the rental house manager comes to inspect the house, he can use his smartphone to read the QR code information on the house number to accurately obtain the information of the household address.
QR code bus service. If you want to know how far the bus you are taking is from the stop, or how many minutes it will take to get to the terminal, just scan the QR code with your mobile phone and log in to the bus service website to easily find out. At present, many cities in my country have begun to implement this kind of bus service. Bus passengers can not only get all the ride information, but also get information about eating, drinking and entertainment near the bus station at the same time. Lost and found items can also be released through this platform.
Anti-counterfeiting invisible QR code. Due to the further development of printing technologies such as phosphors, some products have begun to use invisible QR codes. These invisible QR codes cannot be seen with the naked eye and must be scanned and verified by infrared laser irradiation. Because the production process of this technology is relatively complex, counterfeiters cannot easily copy it.
QR code navigation. An international sculpture exhibition held in Shanghai introduced QR code nameplate technology (signs mounted on machines, instruments, motor vehicles, etc.). After smartphone users take a photo of the QR code and decode it, they can listen to the detailed audio introduction about the sculpture through their ear-mounted mobile phones. This not only saves them the trouble of audio guides, but also prevents other visitors from being disturbed by loudspeaker introductions. A 500-word essay on understanding the role of QR codes
Let’s first talk about the technology and principles, and then talk about its applications.
One form of QR code information exchange.
The process of converting text and other information into QR code graphics is called encoding.
The process of converting QR code graphics into text and other information is called decoding.
The purpose of QR code is very closely related to its characteristics, so let’s talk about the characteristics first, and then talk about the uses of this characteristic.
1. Taking advantage of its large capacity, a large amount of data can be stored in image lattice. For example: the contents of a book can be stored on one page of A4 paper.
However, you cannot read it with the naked eye. You must use professional equipment and software to read it. The barcode developed by Soft Energy can store the contents of a book of about 300,000 words on a piece of A4 paper.
2. Using its encryptability, confidential documents can be saved in printed form. For example: confidential intelligence information can be saved in a QR code. Our commonly used QR code anti-counterfeiting also benefits from its encryptability.
3. QR code can be stored in the form of electronic pictures, so it can be easily spread through the Internet, WAP, MMS and other methods. QR code for entry essay
Evaluation: After reading this short essay that expresses my emotions, I was deeply affected by the emotions expressed by the author in his own way. This true emotional expression made the essay It conveyed a strong appeal, and I also cried. I gave this essay an excellent rating - according to the general essay requirements, although it is not excellent at all. The reason why I gave this essay an excellent rating is because this This composition has the quality of "speaking from the heart". In their compositions, some students write about the "suffering" of others, the "sorrow" of others, the "strength" of others, and the "misfortune" of others, but they put themselves in the situation. Stay away from the incident and let your identity become a "spectator". The author of this short article positions himself at the "emotional center" and expresses his true emotions in simple words: compassion and strength are both included, allowing us to see not only It is just ruins, but the tragic and unyielding spirit on the ruins. Composition ability is the ability to express emotions, and the ability to express emotions is innate, so your composition ability is innate - but, you Sometimes we neglect to grasp and explore this natural ability. Please write your composition with "your own emotions" as the center, so that you can have the smooth feeling of "writing follows your heart" when composing. The QR code of the composition bar
That was when I was in third grade, studying at Gaigway English School. One morning, I was talking to the twelve or thirteen-year-old sisters next to me, and Teacher Bai brought a new classmate. He has a shaved head, a dark complexion, a rustic dress, and he walks with a limp, which is really funny. He lowered his head and said, "My Name is zhangxiang, I'm from Jian Yang." After hearing this self-introduction in English with a strong local accent, everyone burst out laughing. I thought to myself: Huh, country bumpkin, come to the city to study and attend cram school. It's really overestimating one's abilities. So after class, I often tease him. But Zhang Zhangxiang didn't take it seriously every time. He just smiled lightly and seemed to be very tolerant, and I became more and more unrestrained.
One day after school, the weather was very hot. Suddenly, after a strong wind blew, dark clouds from the northwest direction came overwhelmingly. Suddenly, the sky became dark and the storm was coming. The students ran in panic on their way home. Suddenly I saw Zhang Xiang limping into the eaves of a store to take shelter from the rain. I also pretended to take shelter from the rain, and came to the house to scan the QR code to give a reward
Recently, there has been a phenomenon in Chinese society. A new trend has caught the attention of the international media. In restaurants in first-tier cities such as Beijing and Shanghai, service staff will wear an additional QR code tag. If the customer approves the service of the service staff, they can pick up their mobile phone to scan and pay a "reward". This trend started in October 2015 and has become popular in some big cities in China, and is welcomed by many young Chinese diners. The National Public Radio website commented that China's young diners are willing to spend money to buy better services, and they are leading the resurgence of tipping culture in China.
The trend of “rewards” in China’s catering industry originated from rewards for self-media articles on the Internet. This time, this model is moved to the real industry, whether in China or around the world. This may be the first time. However, when it comes to tipping waiters, we have to mention Europe, the originator of “tipping culture”.
Can I use QR codes to write essays?
The more words there are, the harder it is to recognize. As mentioned, general QR code generators have a word limit, generally ranging from 200 to 300. The number of words generated is also different depending on the software functions!
Then you should chat with the moon for a while
Chat with the moon
I am a member of nature - Xiaocao, my name is Xiaoqin.
Today, Xiaohua and I played until night. When Xiaohua was tired, she went to sleep. I felt extremely lonely by myself. Suddenly, I found that there was also a lonely person. ——Sister Moon. So, I started chatting with Sister Moon.\x09 \x09
"Sister Moon, why don't you go to bed? Are you unable to sleep like me?" Sister Moon smiled. Liao smiled and said: "No, the reason why I didn't go to bed was because it was dark at night. I shined the light from my body on the earth so that the little bugs on the way home would not get lost and would not dare to sleep because they were afraid of the dark. The children are no longer afraid. "Oh, Sister Moon, you are so great!" "Speaking of greatness, I am not as good as Father Sun! Father Sun, the light from his body shines on the earth, and it never rests for a moment." Sister Moon said. I Then asked Sister Moon: "Sister Moon, why don't you get married? Then you will have a companion." Sister Moon said: "Although it is a good thing to have a companion, when you get married, there will be little moons, and they will shine with me. If the earth is like this, the animals on the earth will be very cold, and during the day, they will replace the sun. At that time, there will be no daylight, and the crops will wither without sunlight. The final result is that people will not be able to live. "I couldn't help but give a thumbs up to Sister Moon. Sister Moon and I also talked a lot
Please indicate the source of the reprint. Compositions.com? QR code composition. Composition with the title of QR code
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