QWERTY

Represents the standard letter configuration of the letters from a typewriter or computer keyboard. Initially, this letter arrangement has been developed in order to prevent users from blocking old typewriters, the most used keys being separated from the rest. And although this problem doesn't apply to modern keyboards, this layout has been preserved, mainly due to the fact that most users (ex-typewriters' users, at least at the moment when keyboards were first introduced) were simply too accustomed to this configuration in order to change it. Actually, this is one of the reasons why the Dvorak configuration, developed by August Dvorak back in 1932, which grouped on the middle row all the vowels and the five most common consonants, enjoyed a very limited level of success.