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When the technology was founded: Around 1860 when the first QWERTY-keyboard was developed.
Why the technology will be around for another 20 years: The keyboard is in practically every device there is - even to the mobile device and television remotes. For some time, the keyboard was restricted to simply the word processor and the computer. It took a while for mobile devices to take advantage of the QWERTY keyboard style on handsets.
However, innovative technologies allow a wider breadth of input into computers and mobile devices. But even with touch technology, arguably spurred on by tablets and touch-screen phones like the iPad and iPhone, the keyboard still reigns as the most natural and innate input device for all to use.