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Modern Communication
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Charles Babbage
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Babbage Engine - 1830
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Cam wheel
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Organ cam
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Basile Bouchon Son of an organ maker, he realized the perforated paper pattern to tell the organist where to place the pegs could be used as a controller on a loom Son of an organ maker, he realized the perforated paper pattern to tell the organist where to place the pegs could be used as a controller on a loom In 1725 built a loom using a loop of perforated paper to control the thread lifters on a loom In 1725 built a loom using a loop of perforated paper to control the thread lifters on a loom
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Bouchon’s loom
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Jean-Baptiste Falcon In 1728 Falcon improved on Bouchon’s idea by substituting cards for the paper roll. In 1728 Falcon improved on Bouchon’s idea by substituting cards for the paper roll.
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Jaques de Vaucanson In 1741 improved the system by automating it In 1741 improved the system by automating it Used a perforated cylinder, then placed a perforated paper roll around it Used a perforated cylinder, then placed a perforated paper roll around it Added a ratchet system to advance the cylinder Added a ratchet system to advance the cylinder
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Joseph Jacquard In 1800 perfected the system using cards like Falcon and Vaucanson’s ratchet system Created the Jaquard loom Jaquard gets all the credit for everyone else’s previous work
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Jacquard Loom
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Herman Hollerith
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Hollerith Tabulator
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Card punch
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Hollerith punch card – 1890 Census
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German Z3 - 1941
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Konrad Zuse
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Zuse tube
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Binary 00 11 210 311 4100 5101 6110 7111 81000 91001
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British Colossus - 1944
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Eniac - 1946
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Vacuum tube
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The Transistor
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Kilby’s integrated circuit - 1958
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Modern integrated circuit
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Altair personal computer -1975
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Bill Gates and Paul Allen - 1975
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Steve Wozniak and Steve Jobs - 1976
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Apple I - 1976
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Apple II - 1977
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Dan Bricklin/Bob Frankston – Visicalc 1978
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Tim Patterson and QDOS - 1980 Quick and Dirty Operating System
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Ampex Signature V
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Apex video recorder
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Carl Auer Freiherr von Welsbach
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Georgia Cayvan
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Gordon Gould
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DVR
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Early cell phone
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Sony Walkman CD - 1984
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iPod - 2001
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iPhone - 2007
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The Internet Invented by the Advanced Research Projects Agency (ARPA) Invented by the Advanced Research Projects Agency (ARPA) Required three changes in computers: Required three changes in computers: Going from analog to digital Going from analog to digital Connecting computers through phone lines Connecting computers through phone lines Packet switching Packet switching
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Packet Switching Divide any message into chunks of data, or packets Divide any message into chunks of data, or packets Each packet is a small part of the message Each packet is a small part of the message Each packet has a final destination address Each packet has a final destination address The packets are sent through the computer network over any and all pathways The packets are sent through the computer network over any and all pathways The packets are reassembled at the destination address The packets are reassembled at the destination address
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Protocols Codes that allow computers to talk to each other regardless of manufacturer or operating system
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Tim Berners-Lee
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Examples of HTML codes = end of paragraph = end of paragraph to put in an email address to put in an email address Making a list Making a list open list open list item one item one item two item two Close list Close list text to put text in boldface text to put text in boldface
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Marc Andreessen and Mosaic
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