It was only in the 1820s, mechanical calculators became populer.Charles Xavier Thomas de Colmar find a machine that could perform the four basic arithmetic functions. Colmar mechanical calculator, arithometer, presenting a more practical approach in the calculation because the tool can perform addition, subtraction, multiplication, ability, arithometer widely used until World War I. Together with Pascal and Leibniz, Colmar helped build a mechanical computing era.
After almost 12 centuries, emerged another discovery in terms of computing machines. In 1642, Blaise Pascal (1623-1662), who at that time was 18 years old, found what he called a numerical wheel calculator (numerical wheel calculator) to help his father make tax calculations This brass rectangular box called the Pascaline, used eight serrated wheel to add up the numbers to eight digits. This tool is a calculator tool based on ten. Weaknesses of these tools is limited only to do the sums
In 1694, a German mathematician and philosopher, Gottfred Wilhem von Leibniz (1646-1716) improved the Pascaline by creating a machine that can. like its predecessor, this mechanical device works by using the wheels. with study notes and drawings made by Pascal, Leibniz can fine-tune the instrument.
Beginning of the computer that is actually formed by a British mathematics professor, Charles Babbage (1791-1871). In 1812, Babbage noticed natural compatibility between mechanical and mathematical machinery of mechanical machines are very good at doing the same tasks repeatedly without mistake; being mathematics requires a simple repetition of a by steps. The problem than growing up putting engines mechanics as a tool to address the needs of mechanics. Babbage's first attempt to address this problem emerged in 1822 when he proposed a machine equation is called Differential Engine. Using steam, the machine can store programs and can perform calculations and print the results automatically.
After working for ten years Differential Engine, Babbage was suddenly inspired to start making a general-purpose computer first, called the Analytical Engine. Babbage's assistant, Augusta Ada King (1815-1842) has an important role in the manufacture of this machine. He helped revise the plan, seek funding from the British government, and communicate to the public specification of the Analytical Engine. In addition, a good understanding of the Augusta machine makes it possible to put instructions into the machine and also make it the first female programmer. In 1980, the U.S. Defense Department named a programming language ADA with the name as a tribute to him.
