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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.
Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids.The well-known toy version was developed by British engineer Denys Fisher and first sold in 1965.
Workshop of the Strasbourg cathedral A computer controlled router carving a sculpture from a block of marble 15th Century measuring device with plumb-bobs. A pointing machine is a measuring tool used by stone sculptors and woodcarvers to accurately copy plaster, clay or wax sculpture models into wood or stone. In essence the device is a ...
The device had rotary dials that rotated in accordance with the selected numbers; with gears, drums, and clever engineering, it was capable of addition, subtraction, multiplication and division (using 9's constant). A stylus was used to turn the dials. Later devices of this type include the Arithmometer, in the 1860s; and the Addiator, in 1920. [5]
A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy.
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From the beginning of the 18th century, craftsmen and opticians would make camera obscura devices in the shape of books, which were much appreciated by lovers of optical devices. [ 35 ] One chapter in the Conte Algarotti's Saggio sopra Pittura (1764) is dedicated to the use of a camera obscura ("optic chamber") in painting.
An image being dragged onto a web browser icon, which opens the image in the web browser. 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.