The American National Standards Institute (ANSI) designated the Dvorak keyboard as an alternative standard keyboard layout in 1982 (INCITS 207-1991 R2007 previously X4.22-1983, X3.207:1991), "Alternate Keyboard Arrangement for Alphanumeric Machines". The layout was completed in 1932 and granted U.S. However, the Dvorak principles have been applied to the design of keyboards for other languages, though the primary keyboards used by most countries are based on the QWERTY design. For non-English use, these differences lessen the alleged advantages of the original Dvorak keyboard. Also, many languages have letters that do not occur in English. For other European languages, letter frequencies, letter sequences, and bigrams differ from those of English. The Dvorak layout is intended for the English language. This motion on a keyboard is called inboard stroke flow. An observation of this principle is that, for many people, when tapping fingers on a table, it is easier going from little finger to index than vice versa. Stroking should generally move from the edges of the board to the middle.Digraphs should not be typed with adjacent fingers.The right hand should do more of the typing because most people are right-handed.The least common letters should be on the bottom row which is the hardest row to reach.For maximum speed and efficiency, the most common letters and bigrams should be typed on the home row, where the fingers rest, and under the strongest fingers (Thus, about 70% of letter keyboard strokes on Dvorak are done on the home row and only 22% and 8% on the top and bottom rows respectively).On a Dvorak keyboard, vowels and the most used symbol characters are on the left (with the vowels on the home row), while the most used consonants are on the right. Letters should be typed by alternating between hands (which makes typing more rhythmic, increases speed, reduces error, and reduces fatigue).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |