ITPZ950002U1 - ALPHANUMERIC KEYBOARD FOR ELECTRONIC WRITING MACHINE AND FOR COM- PUTER- - Google Patents

Description

Text of the description of the alphanumeric keyboard

for electronic writing machines and computers

The configuration of the keyboard and the arrangement of the keys (characters and movement) are aimed at eliminating the serious imbalances existing in the so-called "universal" keyboard, in use today:

1) as regards the "load" of the keys that compete with the little fingers: 7 for the left hand (4 for writing and 3 for movement) and 13 for the right hand (10 for writing and 3 for movement);

2) as regards the "load" of the beats per finger, per row of keys and for each hand (see comparison tables 3 and 4 and table 6);

3) as regards the placement of the movement keys (return or enter, capital letters or shift, caps lock, return or backspace and tabulation), which are distributed (even in duplicates) on the two external sides of the keyboard, in extreme positions and accessible with difficulty by the little fingers.

In order to eliminate the aforementioned drawbacks and to facilitate rational typing, also known as 10-finger or blind typing, and to make typing of current writing texts considerably faster.

Claims (1)

CLAIMS the keyboard, for which the patent is requested, is inspired by the following principles: a) arrangement of the keys in four horizontal and vertical parallel rows for a total of 48 keys divided into two distinct sections (right and left) of 24 writing keys each, separated by three movement keys; b) respect for the ergonomics for locking the 8 keys pertaining to the little fingers, which must be higher than the other keys and adjusted either in a fixed way (with a standard of 6 mm) or in a mobile way, for personalized adjustment, by means of mechanically or electronically controlled lifting device; c) disengagement of the little fingers from the movement keys placed on the outside (return or enter keys, capital letters, the keypad and the return), bringing, in the center of the keyboard, the return key, a single key for capital letters and only one for the caps, said keys, in blind typing, obviously belong to the indexes; d) balanced distribution of the "load" of keystrokes per hand, per row of keys and per fingers, according to the frequency of characters in texts written in Italian; e) "load" of the little fingers and ring fingers in correct ratio, although apparently excessive, with the lower strength and less agility of these fingers (particularly of the ring finger) compared to the middle and index fingers, reducing the beats outside the line to an irrelevant percentage base (2 <'> row) (see table 3 and table 4); f) alternation of hands and fingers while typing words; g) ease of memorization and acquisition of the automatic movement for typing the accented vowels: positioning of the keys of the accented vowels in the first row at the bottom, ì - é - ù - ò - à, so that they are beaten with the same finger beating the respective simple or unstressed vowel. h) the keys of the brackets "()", to facilitate the memorization and automatic movement of the fingers, are placed in a symmetrical way and are struck with the ring fingers.