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Sep 19, 1001
creation of abacus
abacus is a calculating tool that is used for performing arithmetic processes. -
creation of napier's rods
napier's rods made by john napier, are used for for calculation of products and quotients of numbers that was based on Arab mathematics and lattice multiplication. -
creation of the pascaline
in 1642, while blaise pascal was still a teenager, he started some work on calculating machines and after 3years of effort, he invented the mechanical calculator, pascaline. -
creation of the leibniz wheel
he added automatic multiplication and division to Pascal's calculator and was the first to describe a pinwheel calculator in 1685 and invented the Leibniz wheel. -
(i don't know the date) creation of the difference machine
chares babbage invented the first mechanical computer that led to more complex designs. In 1991, a perfectly functioning difference engine was made from Babbage's plan. -
the 1st generation of computers
the vaccum tubes were used for circuitry and magnetic drums for memory in edvac. -
the second generation of computers
the transistors replaced vacuum tubes but didn't get famus until 1950. it was better than the vaccum tubes and allowed computers to become smaller, faster, cheaper, more energy-efficient and more reliable. -
the third generation of computers
the transistors were made smaller and placed on semiconductors, which increased the speed and efficiency of computers. -
the fourth generation of computers
thousands of integrated circuits were built onto a single silicon chip and are being used until now. -
Period: to
history timeline
