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The history of textbooks dates back to ancient civilizations. For example, Ancient Greeks wrote educational texts. The modern textbook has its roots in the mass production made possible by the printing press. Johannes Gutenberg himself may have printed editions of Ars Minor, a schoolbook on Latin grammar by Aelius Donatus. Early textbooks were used by tutors and teachers (e.g. alphabet books), as well as by individuals who taught themselves. Site Link - Clcik
The Greek philosopher Socrates lamented the loss of knowledge because the media of transmission were changing.[3] Before the invention of the Greek alphabet 2,500 years ago, knowledge and stories were recited aloud, much like Homer's epic poems. The new technology of writing meant stories no longer needed to be memorized, a development Socrates feared would weaken the Greeks' mental capacities for memorizing and retelling. (Ironically, we know about Socrates' concerns only because they were written down by his student Plato in his famous Dialogues.
Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1993 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.[2][3] Based on the PostScript language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, vector graphics, raster images and other information needed to display it. Full Video Link:
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