How do they work? Apps can let your phone or tablet do almost anything that the programmers can imagine, within the technical limitations of the device. This means that you can turn your phone into a remote control for a toy helicopter, your tablet into a turbo-charged drawing pad, and much else besides. Since the release of Apple's iPhone, smartphones have become powerful enough to perform more than just the features that were built into the phone.
Johannes Gutenberg was a German goldsmith and inventor best known for the Gutenberg press, an innovative printing machine that used movable type. Gutenberg was born between 1394 and 1400 and died in 1468. In 1438, Gutenberg began a business arrangement with Andreas Dritzehn, who funded his experiments in printing. In 1450, Gutenberg began a second arrangement with German businessman Johannes Fust.
View full size image. Johannes Gutenberg is usually cited as the inventor of the printing press. Indeed, the German goldsmith's 15th-century contribution to the technology was revolutionary â enabling the mass production of books and the rapid dissemination of knowledge throughout Europe. However, the history of printing begins long before Gutenberg's time.