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The EDT measures the ability of the subject to draw vertical lines, with both the left and right hands. To compare performance between gross arm movements and fine finger control, the subjects draw lines holding either the tablet's pen (held by the fingers) or a mouse (held by the whole hand). The latter movements do not include finger movements.
It employs a three or four-fingered leather glove with a grooved piece of horn sewn into the crouch of the thumb. The draw starts with the thumb wrapping around the string just below the nocking point so the string seats in the horn groove. Then the index finger, middle finger and (in some styles) ring finger bend down and squeeze the string ...
The fingers are numbered sequentially from "1" for the index finger, to "4" for the little finger, to the letter "T" for the thumb. Finger slots are represented by placing any two or more of these together. For example, the space between the index and middle fingers is called "12". A pen held between the thumb and ring finger is in slot "T3".
A trackball is a pointing device consisting of a ball housed in a socket containing sensors to detect rotation of the ball about two axis, similar to an upside-down mouse: as the user rolls the ball with a thumb, fingers, or palm the pointer on the screen will also move. Tracker balls are commonly used on CAD workstations for ease of use, where ...
mouse A hand-held pointing device that is moved across a surface. touchpad or trackpad A flat surface operated by moving a finger across its surface. touch screen A layer placed over a computer screen, used by physically touching it with one's finger or a stylus. trackball Similar to a mouse, a trackball has a ball held by a socket.
Pen computing refers to any computer user-interface using a pen or stylus and tablet, over input devices such as a keyboard or a mouse.. Historically, pen computing (defined as a computer system employing a user-interface using a pointing device plus handwriting recognition as the primary means for interactive user input) predates the use of a mouse and graphical display by at least two ...
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The "shaka" sign. The shaka sign, sometimes known as "hang loose" is a gesture with friendly intent often associated with Hawaii and surf culture.It consists of extending the thumb and smallest finger while holding the three middle fingers curled, and gesturing in salutation while presenting the front or back of the hand; the wrist may be rotated back and forth for emphasis.