Keyboard actuatable with the aid of the fingers of at least one hand

A method of actuating a keyboard, actuatable with the aid of the tips of fingers of at least one hand, which keyboard comprises a support frame, a first row of key units, each of which comprises a key being movable out of an initial inoperative position in which the tips of the index finger, middle finger, ring finger and little finger, respectively, rest on the keys of said first row and a hand rest for the ball of the thumb or wrist of the said hand;

• the keys of said first row for each hand to be used for operating the keyboard being arranged on a curve, which corresponds to the natural disposition of the finger tips when the fingers are, without being tensioned, in a slightly curved and spread, but relaxed posture, wherein the key of each key unit of said guide key row has a key rod and a top face on one end of said key rod and destined for having the tip of a finger rest thereon, and, at the end of said rod opposite said top face, non-depressable mounting means articulatedly lodged in said support frame and being adapted for preventing downward depression of said key while permitting lateral shifting of said key toward at least one determined operational position, attracting means adjacent one side of said key, near the end of said key rod bearing said top face and facing away from said operational position, and adapted for exercising a determined initial attraction on said top face-bearing key rod end opposing tilting movement of said key away from said attracting means, when such movement is initiated by a finger tip resting on the top face of said key;
• stop means associated with said attracting means and preventing the latter from following said tilting movement of said key, thereby decreasing the attractive force of said attractive means as the distance of said key therefrom increases due to progress of said lateral tilting movement of said key, and thereby causing said finger tip to tilt said key automatically further until the latter is fully shifted to said operating position, and
• (a) resting the said ball of the thumb or wrist of said hand on said hand rest during actuation of the keyboard;
• (b) exercising random vertical pressure by the finger tips on the top faces of the keys of said first row,
• (c) exercising tilting pressure by one finger tip on the top face of one of said keys toward one of the forward, rearward, right or left sides thereof, strong enough to overcome said initial attraction and tilting said key;
• (d) after return of said key and the finger tip thereon to the rest position, exercising tilting pressure as described under (c) to the top surface of the same or another key of said keyboard.