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The earliest forms of human communication were limited to spoken language and drawings.
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Sumerian Input Technology: The Stylus and Clay Tablets -
The Sumerians of Mesopotamia, in what is now southern Iraq, developed a standardized system. -
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The Phoenicians developed a set of symbols. -
The Greeks later took the Phoenician alphabet and introduced vowels, while the Romans assigned Latin names to the letters, forming the alphabet we use today. -
the Greeks began to fold sheets of papyrus vertically into leaves and bind them together. -
The Chinese made paper from rags, on which modern-day papermaking is based. -
The first numbering systems similar to those in use today were invented by Hindus in India who created a nine-digit numbering system -
One of the very first information processors. -
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William Oughtred, an English clergyman, invented the slide rule -
The Pascaline. Invented by Blaise Pascal. One of the first mechanical computing machines -
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Working model created in 1822. -
The key advances made during this period included discovering ways to harness electricity. Knowledge and information could now be converted into electrical impulses.
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The census machine, also known as the tabulating machine, was invented by Herman Hollerith and used to process the 1890 U.S. Census -
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The Harvard Mark I, or IBM Automatic Sequence Controlled Calculator, was one of the earliest general-purpose electromechanical computers used in the war effort during the last part of World War II. -
The First High-Speed, General-Purpose Computer Using Vacuum Tubes -
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Vacuum tubes were replaced by transistors as the main logic element. -
Individual transistors were replaced by integrated circuits. -
Large-scale and very large-scale integrated circuits (LSIs and VLSICs) -
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first Macintosh was introduced in 1984 by Steve Jobs and was the first commercially successful personal computer to feature two known, but still unpopular features: the mouse and the graphical user interface