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Pointing Device
A pointing device is a human interface device that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer. CAD systems and graphical user interfaces (GUI) allow the user to control and provide data to the computer using physical gestures by moving a hand-held mouse or similar device across the surface of the physical desktop and activating switches on the mouse. Movements of the pointing device are echoed on the screen by movements of the pointer (or cursor) and other visual changes. Common gestures are point and click and drag and drop. While the most common pointing device by far is the mouse, many more devices have been developed. However, the term ''mouse'' is commonly used as a metaphor for devices that move a computer cursor. Fitts's law can be used to predict the speed with which users can use a pointing device. Classification To classify several pointing devices, a certain number of features can be considered. For ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logitech Mouse
Logitech International S.A. ( ; often shortened to Logi) is a Swiss multinational manufacturer of computer peripherals and software, with headquarters in Lausanne, Switzerland, and Newark, California. The company has offices throughout Europe, Asia, Oceania, and the Americas, and is one of the world's leading manufacturers of input and interface devices for personal computers (PCs) and other digital products. It is a component of the flagship Swiss Market Index. The company develops and markets personal peripherals for PC navigation, video communication and collaboration, music and smart homes. This includes products like keyboards, mice, tablet accessories, headphones and headsets, webcams, Bluetooth speakers, universal remotes and more. Its name is derived from ''logiciel'', the French word for software. History Logitech was founded in Apples, Vaud, Switzerland, in 1981 by Stanford alumni Daniel Borel and Pierluigi Zappacosta, and former Olivetti engineer Giacomo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drag And Drop
In computer graphical user interfaces, drag and drop is a pointing device gesture in which the user selects a virtual object by "grabbing" it and dragging it to a different location or onto another virtual object. In general, it can be used to invoke many kinds of actions, or create various types of associations between two abstract objects. As a feature, drag-and-drop support is not found in all software, though it is sometimes a fast and easy-to-learn technique. However, it is not always clear to users that an item can be dragged and dropped, or what is the command performed by the drag and drop, which can decrease usability. Actions The basic sequence involved in drag and drop is: * Move the pointer to the object * Press, and hold down, the button on the mouse or other pointing device, to "grab" the object * "Drag" the object to the desired location by moving the pointer to this one * "Drop" the object by releasing the button Dragging requires more physical effort than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphics Tablet
A graphics tablet (also known as a digitizer, digital graphic tablet, pen tablet, drawing tablet, external drawing pad or digital art board) is a computer input device that enables a user to hand-draw images, animations and graphics, with a special pen-like stylus, similar to the way a person draws images with a pencil and paper. These tablets may also be used to capture data or handwritten signatures. It can also be used to trace an image from a piece of paper that is taped or otherwise secured to the tablet surface. Capturing data in this way, by tracing or entering the corners of linear polylines or shapes, is called digitizing. The device consists of a rough surface upon which the user may "draw" or trace an image using the attached stylus, a pen-like drawing apparatus. The image is shown on the computer monitor, though some graphic tablets now also incorporate an LCD screen for more realistic or natural experience and usability. Some tablets are intended as a replacement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sliding Pot
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Sliding may refer to: *Sliding (dance), also floating or gliding, a group of footwork-oriented dance techniques *Slide (baseball), an attempt by a baseball runner to avoid getting tagged out *Sliding (motion) See also *Slide (other) *Slider (other) Slider or Sliders may refer to: Arts * K.K. Slider, a fictional character within the ''Animal Crossing'' franchise * ''The Slider'', a 1972 album by T. Rex * ''Sliders'' (TV series), an American science fiction and fantasy television series * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotary Pot
Rotary may refer to: General * Rotary motion Engineering and technology * Rotary dial, a rotating telephone dial * Rotary engine (other), multiple types of engines called "rotary" * Rotary latch * Rotary milking shed, a type of milking shed used in the dairy industry * Rotary snowplow, one type of railroad snowplow used especially for deep snow removal * Rotary system, a type of pre-electronic telephone switch * Rotary table (drilling rig), a device used to apply directional force to a drill string * Rotary tiller, a motorised cultivator * Rotary woofer, a type of loudspeaker capable of producing very low frequency sound * Rotary wing aircraft Arts and entertainment * "The Rotary", a song by Andy Partridge from ''Take Away / The Lure of Salvage ''Take Away'' and ''The Lure of Salvage'' are sides one and two, respectively, of the debut record by English musician Andy Partridge (credited as "Mr. Partridge"). Co-produced with John Leckie, the LP was released in Febru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensory System
The sensory nervous system is a part of the nervous system responsible for processing sensory information. A sensory system consists of sensory neurons (including the sensory receptor cells), neural pathways, and parts of the brain involved in sensory perception. Commonly recognized sensory systems are those for vision, hearing, touch, taste, smell, and balance. Senses are transducers from the physical world to the realm of the mind where people interpret the information, creating their perception of the world around them. The receptive field is the area of the body or environment to which a receptor organ and receptor cells respond. For instance, the part of the world an eye can see, is its receptive field; the light that each rod or cone can see, is its receptive field. Receptive fields have been identified for the visual system, auditory system and somatosensory system. Stimulus :Organisms need information to solve at least three kinds of problems: (a) to maintain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Touchscreen
A touchscreen or touch screen is the assembly of both an input ('touch panel') and output ('display') device. The touch panel is normally layered on the top of an electronic visual display of an information processing system. The display is often an LCD, AMOLED or OLED display while the system is usually used in a laptop, tablet, or smartphone. A user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus or one or more fingers. Some touchscreens use ordinary or specially coated gloves to work while others may only work using a special stylus or pen. The user can use the touchscreen to react to what is displayed and, if the software allows, to control how it is displayed; for example, zooming to increase the text size. The touchscreen enables the user to interact directly with what is displayed, rather than using a mouse, touchpad, or other such devices (other than a stylus, which is opt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bill Buxton
William Arthur Stewart Buxton (born March 10, 1949) is a Canadian computer scientist and designer. He is a partner researcher at Microsoft Research. He is known for being one of the pioneers in the human–computer interaction field. Background and contributions Buxton received his bachelor's degree in music from Queen's University in 1973 and his master's degree in computer science from the University of Toronto in 1978. Buxton's scientific contributions include applying Fitts' law to human-computer interaction and the invention and analysis of the marking menu (together with Gordon Kurtenbach). He pioneered multi-touch interfaces and music composition tools in the late 1970s, while working in the Dynamic Graphics Project at the University of Toronto. In 2007, he published ''Sketching User Experiences: Getting the Design Right and the Right Design''. Buxton is a regular columnist at ''BusinessWeek''. Before joining Microsoft Research he was chief scientist at Alias Wavefr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wiimote
The Wii Remote, also known Colloquialism, colloquially as the Wiimote, is the primary game controller for Nintendo's Wii home video game console. An essential capability of the Wii Remote is its Motion controller, motion sensing capability, which allows the user to interact with and manipulate items on screen via motion sensing, gesture recognition, and pointing device, pointing which is used for the console, using accelerometer and image sensor, optical sensor technology. It is expandable by adding attachments. The attachment bundled with the Wii console is the #Nunchuk, Nunchuk, which complements the Wii Remote by providing functions similar to those in gamepad controllers. Some other attachments include the Classic Controller, Wii Zapper, and the #Wii Wheel, Wii Wheel, which has originally been used for the racing game, ''Mario Kart Wii''. The controller was revealed at both Electronic Entertainment Expo, E3 2005 and Electronic Entertainment Expo, E3 2006 and the Tokyo Game Sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Degrees Of Freedom (physics And Chemistry)
In physics and chemistry, a degree of freedom is an independent physical parameter in the formal description of the state of a physical system. The set of all states of a system is known as the system's phase space, and the degrees of freedom of the system are the dimensions of the phase space. The location of a particle in three-dimensional space requires three position coordinates. Similarly, the direction and speed at which a particle moves can be described in terms of three velocity components, each in reference to the three dimensions of space. If the time evolution of the system is deterministic (where the state at one instant uniquely determines its past and future position and velocity as a function of time) such a system has six degrees of freedom. If the motion of the particle is constrained to a lower number of dimensions – for example, the particle must move along a wire or on a fixed surface – then the system has fewer than six degrees of freedom. On the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotation
Rotation, or spin, is the circular movement of an object around a '' central axis''. A two-dimensional rotating object has only one possible central axis and can rotate in either a clockwise or counterclockwise direction. A three-dimensional object has an infinite number of possible central axes and rotational directions. If the rotation axis passes internally through the body's own center of mass, then the body is said to be ''autorotating'' or '' spinning'', and the surface intersection of the axis can be called a '' pole''. A rotation around a completely external axis, e.g. the planet Earth around the Sun, is called ''revolving'' or ''orbiting'', typically when it is produced by gravity, and the ends of the rotation axis can be called the '' orbital poles''. Mathematics Mathematically, a rotation is a rigid body movement which, unlike a translation, keeps a point fixed. This definition applies to rotations within both two and three dimensions (in a plane and in spa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Translation (geometry)
In Euclidean geometry, a translation is a geometric transformation that moves every point of a figure, shape or space by the same distance in a given direction. A translation can also be interpreted as the addition of a constant vector to every point, or as shifting the origin of the coordinate system. In a Euclidean space, any translation is an isometry. As a function If \mathbf is a fixed vector, known as the ''translation vector'', and \mathbf is the initial position of some object, then the translation function T_ will work as T_(\mathbf)=\mathbf+\mathbf. If T is a translation, then the image of a subset A under the function T is the translate of A by T . The translate of A by T_ is often written A+\mathbf . Horizontal and vertical translations In geometry, a vertical translation (also known as vertical shift) is a translation of a geometric object in a direction parallel to the vertical axis of the Cartesian coordinate system. Often, vertical translation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
