trackball

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trackball

[′trak‚bȯl]
(computer science)
A ball inset in the console of a video display terminal, which can be rotated by the operator, and whose motion is followed by a cursor on the display screen.

trackball

A stationary pointing device that contains a movable ball rotated with the fingers or palm. From one to four keys are located in various positions depending on the unit. In the late 1980s and 1990s, Kensington Microware popularized the trackball with its Turbo Mouse for the Macintosh. Turbo Mouse for Windows was subsequently released, and over the years, the Turbo Mouse evolved into the Expert Mouse and Orbit brands.

The advantage of the trackball, and the reason many people like it, is that the unit remains in the same position on the desk, and only the ball is moved. See mouse, pointing stick and touchpad.


The Turbo Mouse
The Turbo Mouse popularized the trackball for the Macintosh. Later models were developed for the PC. (Image courtesy of Kensington Microware, Ltd.)
References in periodicals archive ?
Once the user clicks this, the first two trackballs are disabled and only the rightmost trackball is active, corresponding to the OFFSET parameter in the colour wheels.
Programmable and virtual keyboards are dependent on software programs that accommodate on-screen keyboard access by mouse, switch, joystick, trackball, or other input device.
If using a mouse or trackball that's separate from the keyboard, which most people do, keep it positioned as close to the keyboard as possible.
Ergonomically designed, this optical trackball mouse features a scrolling wheel and a large detachable ball, and is available with an MSRP of $29.
Assistive-technology professionals frequently recommend trackballs.
More than just inverted mice*, trackballs offer a number of distinct advantages over mice:
A trackball is the most common mouse emulator; it sells for around $100.
Immersion Corporation, (Nasdaq:IMMR), a leading developer and licensor of touch feedback technology, and Measurement Systems Inc (Ultra MSI), a subsidiary of Ultra Electronics Holdings plc and a leading designer and manufacturer of positioning and tracking controls, have signed a licensing agreement giving Ultra MSI rights to use Immersion's TouchSense(R) technology in joysticks, trackballs, and other hand controls.
amp; ROMANEL-SUR-MORGES, Switzerland -- Logitech International (SWX:LOGN) (Nasdaq:LOGI), the world leader in cordless PC peripherals, today announced that it has shipped more than 50 million cordless peripherals worldwide, including keyboards, mice and trackballs.
Happ Controls is best-known for its production and distribution of coin doors, bill validators, monitors, touch screens, power supplies, optical guns, trackballs, push buttons, driving controls and joysticks for amusement games and gaming machines.
The Custom Arcade family-fun centers combine full-size consoles with powerful electronics; incorporate large video monitors with heart-pounding surround sound; and provide sophisticated controls with jumbo-sized switches, joysticks, and trackballs -- all with a look that is classy, fun, and inviting.
The QVE00033 transmissive switch's small size, surface mount package, and performance make it ideal for non-contact switching applications in disk drives, card detectors, mouse and trackballs, and motor and motion controllers.