http://en.dteixeira.com Professional Blog Thu, 12 Mar 2009 16:59:42 +0000 http://backend.userland.com/rss092 en Usability has much to say, but I will split in several posts, starting with this, introducing the subject, telling a small history of usability, their creators and objectives. To Hix and Hartson (apud Heemamm, 1997), usability is the combination of easy learning, high speed execution of tasks, low rate of errors, ... http://en.dteixeira.com/gui/a-summary-about-usability.html In the previous post I talked about the history of the GUI, and I gave you a small introdution about GUIs and the Sketchpad. But one of the big jumps in the graphical interfaces world has been given by Xerox when they builded the first desktop system called 8010 Star ... http://en.dteixeira.com/gui/xerox-is-not-only-to-copy-paper.html Historically, in the 60s there was no graphical interface, so far, everything was based on punched cards, if not, perforated paper with algorithms and alphabets and the output was done by printers. There was no interaction with the user. In 1962, Ivan Sutherland (was born in 1938, and he still alive ... http://en.dteixeira.com/gui/the-appearance-of-the-gui.html