Printing press

Proto-printing was done by Sumerians and Chinese. Gutenberg worked out a system to press down many metal characters dipped in ink evenly, and produced 300 copies of a 1282 page bible.
 Johannes Gutenberg Germany 1454 Printing press

Proto-printing was done by Sumerians and Chinese. Gutenberg worked out a system to press down many metal characters dipped in ink evenly, and produced 300 copies of a 1282 page bible.