QR code means Quick response code , A black and white label that is not so attractive to look at but is a great use. QR code stores the biggest data and also processes it very fast. And in today's digital era, it is proving to be a boon for the banking sector. Know when and where the QR code was invented.

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School is a place where we spend the happiest and most memorable moments of our life. There is a lot of fun in school and friends are made to support lifelong. But due to the pandemic, the schools had to be closed, but now in view of the improving conditions, the schools are reopening once again. But do you know when schools were started for the first time ?

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Today's era is the era of fashion. Every person wants to look different from the other. We wear trendy jeans shirt and sometimes sherwani or 3 piece suit according to the atmosphere and occasion. And we can get all these stylish products thanks to the sewing machine. Which is used to sew and many different types of fabrics such as Leather or Cotton.

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ATM Automatic Teller Machine which is also known as Cash point, Automatic Banking Machine , Hole in the wall in other part of the world. ATM machine was first used in US and UK. But these days ATM machine can be seen in every part of the world. 

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The history of Ships is very old, they are also mentioned in many places in religious texts. When Manu or Noah saved the world by traveling on a Ship. The journey of invention from a wooden pole to a big cruise is a very interesting one. Know how and when humans invented the Ship.

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Submarine A vessel used for diving deep into the ocean. The submarine is used by the Navy to protect our borders. The story of the invention of a modern nuclear powered submarine from the first submarine made of leather and wood is very interesting.

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There was a time when all the farming work had to be done by hand, which took a lot of time and the farmers were harmed due to the loss of their crops, but along with the progress of science, farming equipment was also developed, in which the machine was the most useful. Tractor.

The journey from Steam Engine to Modern Marvel is great, let's know

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X-Ray is used to capture the bone structure of human body

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Brushing is a good habit and we should clean our teeth twice a day using a tooth brush everyday. But do you know who invented this seemingly insignificant but very useful tool and under what circumstances?

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Microphone, commonly known as mic or mike is a device which is used to convert sound waves into electrical signal which can be transmit from a place to distance. Today Microphone is used in day to day life it is used in headsets, mobile phone, laptop and computer. Microphone is in service of human being from more than a century. 

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