Press the Home and Power buttons at the same time to take a screenshot of the iPhone.
Credit for creating the modern computer mouse with an optical encoder, single ball and two buttons goes to Jean-Daniel Nicoud of the Ecole Polytechnique Federale de Lausanne in Switzerland. This was a major improvement over original computer mouse created by Douglas Engelbart. Jean-Daniel Nicoud was assisted by André Guignard during the design process. The "Guignard mouse" was ready in 1977 and picked up by Logitech who saw the potential in the device. In 1980s, they started to get the computer peripheral manufactured from another Swiss company, Dubois Depraz SA. With the proliferation of GUI-based operating systems, the mouse soon became extremely popular. By the end of 2008, Logitech announced that they had sold 1 billion of these. [more...]