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The history of computers dates back several centuries. In ancient times, people used abacuses to perform mathematical calculations. Later, in 19th century, Charles Babbage developed concept of a programmable computer. However, it was not until 20th century that computers became widely available.

The first electronic computer, called Atanasoff-Berry Computer, was developed in 1937. This early computer was not very powerful but it laid groundwork for future computing machines. The 1940s saw development of first digital computers. These early machines were very large and expensive, but they were able to perform complex calculations much faster than humans.

The 1950s and 1960s saw development of mainframe computers. These large machines were used by businesses and governments to process large amounts of data. In 1970s, personal computer was developed. This small, affordable computer revolutionized computing, making it accessible to individuals and small businesses.

The 1980s saw development of graphical user interface (GUI). This was a significant development as it made computers more user-friendly and intuitive. This paved way for development of World Wide Web in 1990s.

The 2000s saw rise of mobile computing. The development of smartphones and tablets led to a new era in computing. Today, people can access internet and use a wide range of applications from their mobile devices.

The history of computers has been marked by rapid development and innovation. From simple abacuses to powerful supercomputers, computers have come a long way. Today, they are an integral part of our daily lives and continue to shape future of technology.