Each invention usually comes along with its own inventor; however, the Internet - one of the greatest discoveries of mankind in the 20th century has no single inventor. It first started in the United States more than 50 years ago, and it kept evolved through time. For decades, scientists had been using it to communicate and share data with others. Many scientists and researchers had developed the best way of sending information from one computer to another. The very first computer was located in a laboratory at University of California, and it was about the size of a small house. By the end of 1969, there were just four computers that were connected to the Government’s Computer Network, but the network grew steadily during the 1970s. By the end of the 1970s, a computer scientist named Vinton Cerf had developed a way for all of the computers on all of the world’s mini-networks to communicate with one another. The Internet had a significant changing in 1991. That year, a computer programmer named Tim Berners-Lee introduced the World Wide Web: a “web” of information that anyone on the Internet could retrieve. Since then, the Internet has changed in many ways. Most recently, social networking sites like Facebook, Twitter, YouTube, Instagram etc have become a popular way for people of all ages to stay connected. Today, we use the Internet for almost everything, and it would be impossible for many people to imagine life without it.

It is quite right to say that the smartphone was one of the greatest inventions of the 20th century, because there was no other electrical device at that time that had a significant impact on people's daily lives. Most people today admit that they cannot imagine life without a smartphone. It is normal that we don't watch TV for a day, don't play video games for a week, or don't turn on a DVD player for a month, but I'm sure most of us can't let go of our smartphones. for an hour. . The first device that could at least qualify as a smartphone was just an elaborate brick phone. It's called The Simon phone, and people have to buy it for up to $ 4,000. Not long in the market due to the unreasonable price as well as poor quality, but it can be considered as a pioneer product in the smartphone empire. In 1996, Nokia introduced the Nokia 9000 and it was considered as one of the first smart phones. Although it has brought a completely new experience to users, it still has some disadvantages that cannot satisfy the fans. However, the whole concept of smartphones changed completely with the first iPhone. Apple devices have innovated in many aspects, both in terms of technology and design. Google's Android, on the other hand, had a much slower start. However; In 2012, Android officially dominated the worldwide smartphone market. In a nutshell, smartphones have been invading our world in a way that we don't even realize, and our lives would be a lot more difficult without this useful assistant. .