History of computer development презентация

“History of computer development”

"Computer" was originally a job title: it was used to describe those human beings (usually women  ) whose job it was to perform the repetitive calculations.

In 1617 John Napier from Scotland invented logarithms, which are a technology that allows multiplication to be performed via addition. In 1617 John Napier from Scotland invented logarithms, which are a technology that allows multiplication to be performed via addition. Napier's invention led directly to the slide rule.

The Pascaline The Pascaline Blaise Pascal invented it in 1642 , at age 19, to help his father who was a tax collector. Pascal built 50 of this gear-driven one-function calculator (it could only add). But they really weren't that accurate.

A few years after Pascal, the German Gottfried Wilhelm Leibniz built a four-function (addition, subtraction, multiplication, and division) calculator. A few years after Pascal, the German Gottfried Wilhelm Leibniz built a four-function (addition, subtraction, multiplication, and division) calculator.

In 1801 the Frenchman Joseph Marie Jacquard invented a power loom that could base its weave upon a pattern automatically read from punched wooden cards, held together in a long row by rope. Descendents of these punched cards have been in use ever since. In 1801 the Frenchman Joseph Marie Jacquard invented a power loom that could base its weave upon a pattern automatically read from punched wooden cards, held together in a long row by rope. Descendents of these punched cards have been in use ever since.

Charles Babbage, the English mathematician of the 19th century, was the first who conceived the idea of the automatic machine for complex calculations. He designed his Analytical Engine to perform four arithmetic operations. Charles Babbage, the English mathematician of the 19th century, was the first who conceived the idea of the automatic machine for complex calculations. He designed his Analytical Engine to perform four arithmetic operations.

In 1834 Charles Babbage and Lady Lovelace, Lord Byron's daughter, worked out the first coded program. Lady Lovelace was a brilliant mathematician. She took an active part in Babbage's experiments. So, it is fair to say that she was the world's first computer programmer.

In 1884 Hollerit invented Hollerith Desk. It consisted of a card reader and a large wall of dial indicators to display the results of the count. In 1884 Hollerit invented Hollerith Desk. It consisted of a card reader and a large wall of dial indicators to display the results of the count.

The Hollerith census machine was the first machine to ever be featured on a magazine cover. The Hollerith census machine was the first machine to ever be featured on a magazine cover.

Hollerith built a company, the Tabulating Machine Company which eventually became International Business Machines, Hollerith built a company, the Tabulating Machine Company which eventually became International Business Machines,

In 1937 Dr. H. Aiken of Harvard University began to work at the first completely automatic digital computer which he called the Mark1. He completed it in 1944. One of the primary programmers for the Mark1 was a woman, Grace Hopper. In 1937 Dr. H. Aiken of Harvard University began to work at the first completely automatic digital computer which he called the Mark1. He completed it in 1944. One of the primary programmers for the Mark1 was a woman, Grace Hopper.

The first electronic The first electronic computer, the Electronic Numerical Integrator and Calculator (ENIAC)

In 1945 John von Neuman worked out the concept of the stored program. In 1945 John von Neuman worked out the concept of the stored program.

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