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History of the Internet By: Rebecca - 5 th Period PIT Class.

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Presentation on theme: "History of the Internet By: Rebecca - 5 th Period PIT Class."— Presentation transcript:

1 History of the Internet By: Rebecca - 5 th Period PIT Class

2 The First Computer The first freely programmable computer was made in 1936 by Konrad Zuse. It was called the Z1 Computer.

3 “Debug” The terms "bug" and "debugging" are both popularly attributed to Admiral Grace Hopper in the 1940s. While she was working on a Mark II Computer at Harvard University, her associates discovered a moth stuck in a relay and thereby impeding operation, whereupon she remarked that they were "debugging" the system.

4 How it all Started & Why... Development of internet started in 1957 when Sputnik I (the first satellite) was launched by Soviet Union. Americans felt threatened by this and thought that the Soviet Union could also do bomb attacks from the space. So they created Defense Advanced Research Project Agency (DARPA) in 1958. It worked for the safety from space based missile attack. Then they made another satellite which was the first satellite of U.S.

5 Who Started it?? The internet was not invented by a single person or company. It was developed by a team of experts. These developments and ideas about the internet started nearly a quarter of century back.

6 Charles Babbage Charles Babbage was an English mathematician, philosopher, inventor, and mechanical engineer who originated the concept of a programmable computer. Babbage's machines were among the first mechanical computers, although they were not actually completed, largely because of funding problems and personality issues. He directed the building of some steam-powered machines that achieved some success, suggesting that calculations could be mechanized.

7 Difference Engine This first difference engine would have been composed of around 25,000 parts, weighed fifteen tons. and been 8 ft tall. Although Babbage received ample funding for the project, it was never completed. He later designed an improved version, "Difference Engine No. 2", which was not constructed until 1989–1991, using Babbage's plans and 19th century manufacturing tolerances. It performed its first calculation at the London Science Museum returning results to 31 digits, far more than the average modern pocket calculator.

8 Analytical Engine Soon after the attempt at making the difference engine crumbled, Babbage started designing a different, more complex machine called the Analytical Engine. The engine is not a single physical machine but a succession of designs that he tinkered with until his death in 1871. The main difference between the two engines is that the Analytical Engine could be programmed using punched cards. Ada Lovelace an impressive mathematician, and one of the few people who fully understood Babbage's ideas, created a program for the Analytical Engine. Had the Analytical Engine ever actually been built, her program would have been able to calculate a sequence of Bernoulli numbers.

9 Herman Hollerith Herman Hollerith (February 29, 1860 – November 17, 1929) was a German- American statistican who developed a mechanical tabulator based on punched cards to rapidly tabulate statistics from millions of pieces of data. He was the founder of the company that became IBM. Hollerith built machines under contract for the Census Office, which used them to tabulate the 1800 census in only one year. The 1800 census had taken 8 years. Hollerith then started his own business in 1896, founding the Tabulating Machine Company. Most of the major census bureaus around the world leased his equipment and purchased his cards, as did major insurance companies.

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