The usual typewriter keyboard, the same design used on computer keyboards, named after the characters which comprise the left-most letters of the top row, just under the numerals. While this arrangement of letterson the keyboard was designed a century ago to slow down the typing rate of agile typists so that the mechanical keys did not collide and interlock, the format is so ubiquitious that it has made the transition to the electronic computer keyboard, despite attempts to rearrange the keys to allow entry by the fastest possible fingers.