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Internet:
Unlike technologies such as the light bulb or the telephone, the Internet has no single “inventor.” Instead, it has evolved over time. The Internet got its start in the United States more than 50 years ago as a government weapon in the Cold War. For years, scientists and researchers used it to communicate and share data with one another. Today, we use the Internet for almost everything, and for many people it would be impossible to imagine life without it.
Famous Inventions
GPS (Global Positioning System)
The system was created by the United States Department of Defense. In the beginning, it was only used by the U.S. military, but in 1983 President Ronald Reagan made an order to allow anyone to use the system. Some GPS receivers are separate units with their own power and display. They were the majority in the 20th century. Now, more are part of something else such as mobile phones, wristwatches, and cars.
Mobile Cell Phones
Mobile phones in the 1950s through 1970s were large and heavy, and most were built into cars. In the late 20th century technology improved so people could carry their phones easily. Although Dr. Martin Cooper from Motorola made the first call using a mobile phone in 1973, it did not use the type of cellular mobile phone network that we use today. The first mobile phone networks were created in the late 1970s in Japan. Now almost all urban areas, and many country areas, are covered by mobile phone networks.