{"product_id":"2940013620773","title":"Some dates in the history of communication technology","description":"The five civilizations that define epochs of world history are each introduced by new communication technologies, elements of which are invented at known times.  The first set of inventions has to do with the technique of writing.  The visual symbols used to identify words, first ideographic and then alphabetic scripts, are the key inventions.\u003cbr\u003e\u003cbr\u003eIn later civilizations, machines are the key inventions.  Gutenberg’s printing press using movable type ushered in the age of printed literature associated with the third civilization.  \u003cbr\u003e\u003cbr\u003eIn the fourth civilization, we have a series of inventions that allowed humanity to record visual or audial images.  Photography, based on chemical processes, was the first.  Then came devices that used electricity to communicate, the telegraph and telephone.  Finally, in the 20th century,  the technologies of sound recordings, motion pictures, radio broadcasting, and television broadcasting had a major impact on popular culture.\u003cbr\u003e\u003cbr\u003eThe latest communication machine is the personal computer.  Computer technology is what allows you to download and read this e-book.  Unlike broadcasting, it is tailored to your particular needs.\u003cbr\u003e\u003cbr\u003eThis book gives the dates of major inventions or innovations in the field of communication technology.  You can use it as a reference.","brand":"Thistlerose Publications","offers":[{"title":"Default Title","offer_id":47070104551664,"sku":"2940013620773","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940013620773_p0.jpg?v=1763583084","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940013620773","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}