What is a QWERTY keyboard and Touch Screen

You may be curious about what it QWERTY keyboard and what is the touch screen. And why in 2010 the latest mobile phone is always making phone not far from the QWERTY keyboard and touch screen. What's behind all this? Find the answer in this article?
QWERTY keyboard is a keyboard arrangement of letter keys of the most widely used on the keyboard until the year 2010 date is the QWERTY keyboard is a "superior" her.

Initially, this arrangement of letters used in a mechanical typewriter. The main goal to minimize the congestion type. But the QWERTY arrangement taken from the 6 letters located at the top left of the keyboard. This keyboard arrangement patented by Christopher Sholes since 1874, then sold to Rmington, typewriter manufacturers at that time.

While the touch screen display that can detect the location coordinates of the touch. This allows the touch screen as well as the input device, replace the keyboard or mouse. In addition to the PC, the touch screen is beginning to crawl into the world mobile phone, PDA and SmartPhone. Several other similar variant is to use the stylus usage, to improve the detection accuracy of the coordinates. How've know What is a QWERTY keyboard and Touch Screen?

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