words per minute
8
pratimpatranabish
00:00
Speed
The conventional typewriter keyboard includes several horizontal rows of keys oriented transversally to an operator. The conventional arrangement of letters of such a keyboard is sometimes referred to as the QWERTY format after the first six letters on the top row of the letter keys. The QWERTY format was developed in the late 1800's and has remained the standard keyboard format to date for typewriters as well as for computers, word processors, and other data entry terminals.
The QWERTY format keyboard suffers from several disadvantages. A hand moving up and down the keyboard is required to position for striking keys on the upper and lower portions of the board. Even when it is not necessary to move the entire hand substantial finger movement is required to move the fingers between keys on adjacent rows or between adjacent keys on the same row. Such hand and finger movement decreases the rate at which an operator can enter data via the keyboard, and increases the possibility of making errors.
Inventors have secured patents to facilitate data entry on mechanical typewriters, electric typewriters, word processors, and computer keyboards. Many are designed to overcome difficulty of data entry on the standard QWERTY design which is expanded to six horizontal banks of a hundred and one vertically activated keys on the computer style keyboard.
The disadvantage of these keyboards is the large amount of finger and/or hand movement required by both left and right hands in order to activate the keys on the board. The conventional keyboard lends itself to making mistakes, getting tire, and carpel tunnel in wrists; while the ergonomic minimizes these problems.