-
abacus is a calculating tool that is used for performing arithmetic processes.
-
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.
-
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.
-
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.
-
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 vaccum tubes were used for circuitry and magnetic drums for memory in edvac.
-
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 transistors were made smaller and placed on semiconductors, which increased the speed and efficiency of computers.
-
thousands of integrated circuits were built onto a single silicon chip and are being used until now.
-
