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holes in cards, 1801 The punch card or IBM card was a piece of stiff paper that held digital information. they were used through the 20th century in unit record machines.
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the analytical machine, was a proposed mechanical general-purpose computer. It was first described in 1873 as a successor to babbage's difference engine. A design for a mechanical computer. It had an integrated memory making it the first design for a general purpose-computer.
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PC,1941, Personal computer is a general purpose computer, whose size, capabilities, and original sale price makes it useful for individuals and which is intended to be operated
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ENIAC, 1943, It was turing complete, digital and begin capable of being reprogrammed to solve a full range of computing problems. Eniac was designed to calculate artillery firing tables for the United states army, ballistic research laboratory.
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von Neumann architecture, 1945 The von Neumann architecture was described by Neumann as a stored program architecture. It’s the basis of all computer systems, and is still apart of every computer today.
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High-level programming language,1950’s the high level programming language is a programming device that deals with the data of a computer . it made the data process simpler.
