A pointing device. Essentially, a trackball is a mouse lying on its back. To move the pointer, you rotate the ball with your thumb, your fingers, or the palm of your hand.

An input device used for pointing, designed as an alternative to the mouse. It is almost an upside-down mouse; it is stationary and contains a movable ball that you rotate using your fingers to move the mouse cursor on the screen.

Is usually described as looking like an upside-down mouse. A trackball remains stationary on your desk; as you move the sphere (ball) in the centre with your fingers or palm, sensors detect movement and cause the on-screen cursor to move. Some notebook computers have this type of directional device that attaches to one edge of the computer. Back to the Top

A ball mounted in a box that, when moved, results in a similar movement of the cursor on a display screen.

an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen; "a trackball is essentially an upside-down mouse"

a box that has a ball sticking out the top of it

a computer cursor control device used in many notebook and laptop computers

a device that uses a rotating ball to position a cursor on a computer screen

a good choice if you have little desk space, since you don't need clearance to move around a mouse

a mouse alternative that looks like a mouse turned upside down

a mouse device which permits the user to move the mouse cursor by using a rolling motion on a stationary base

a much more accurate tool for graphics work than a mouse

an alternative to the ordinary mouse and consists of a round ball placed in a holder

a normal mouse used up-side-down

a pointing device like a mouse except the ball is on top

a relative pointing device that usually comes with buttons allowing for preset actions

a replacement for a mouse

a stationary object that utilizes a ball that may be rolled with the fingers, palm of the hand, or foot to move the screen cursor

a stationary pointing device with a ball mechanism on its top

Input device that controls the position of the cursor on the screen; the unit is mounted near the keyboard, and movement is controlled by moving a ball.

Peripheral pointing device similar to a mouse that has input buttons and a ball that a user can manipulate with his or her hands.

Alternative to a mouse which stays in one place on the desktop.

Resembles and functions like a mouse but does not have a contoured housing that fits neatly into a typical hand. Buttons on the trackball emulate the clicks of a mouse. Trackballs are easier to use for persons who cannot manipulate a mouse.

Like an upside down computer mouse, instead of moving the mouse around you spin the ball in the direction you want to move. See also Arcade Parts for Sale

An input device similar to a mouse. The user rotates a ball to move a pointer on the computer screen.

An input device, similar to an upside-down mouse, that can be used to control an onscreen pointer and make selections.

A ball mounted in a stationary housing unit and rotated to control the movement of a cursor on a computer video display. They are commonly used on laptop computers.

A stationary computer pointing device in which the user rolls a ball to move a cursor on a screen. A good alternative to the mouse if arm pain is present. Completely eliminates grip and reach problems. See equipment critiques.

Pointing device like a mouse, only with the sensing ball on top of the device, so the cursor can be moved by rotating the ball with a finger. 4.6

A computer cursor control device. It is used in many notebook computers. The trackball is an upside-down mouse that rotates in place within a socket. The user rolls the ball to direct the cursor to the desired place on the screen and can click one of two buttons (identical to mouse buttons) near the trackball to select desktop objects or position the cursor for text entry. Many persons with Repetitive Strain Injury prefer a trackball to the use of a mouse. Persons with limited hand movement who cannot use a mouse can sometimes use a trackball.

interface: A captured ball that can be spun continuously in any direction used to move the cursor around the screen. It also has one or more buttons associated with it.

A mouse alternative that is basically an upside-down mouse. Useful for some people with mobility impairments because it isolates pointer movement from button clicking.

An input device that operates very similary to a mouse. Where a mouse has a bell you roll on your table top, in the case of the track ball, the ball part is on top and you rotate it using your fingers.

A device, often used with laptop computers, that works like an upside-down mouse. It requires less desk space for use than a mouse, because instead of moving it around the desk to move the pointer on-screen, you roll it in place to move the pointer. Some arcade video games use devices similar to trackballs.

another replacement for the mouse pointing device that uses a rolling ball to perform mouse movements.

A pointing device built in to a portable computer that controls the movement of the cursor on the screen. Trackball-aware software allows you to activate commands by rolling the trackball and clicking its buttons while pointing at objects displayed on the screen.

a hand held input device similar to a mouse turned upside down; used by rolling the trackball with the fingers

An interactive control for inputting spatial data to a computer or selecting a screen option.

Stationary pointing device with a ball on its top, like an upside-down mouse. 5.10

An optical device used to control on-screen movement along the X and Y axes. As the ball is rolled the on-screen cursor (or arcade game image) is moved correspondingly.

n. A pointing device that consists of a ball resting on two rollers at right angles to each other, which translate the ball's motion into vertical and horizontal movement on the screen. A trackball also typically has one or more buttons to initiate other actions. A trackball's housing is stationary; its ball is rolled with the hand. Compare mechanical mouse.

A trackball is a pointing device consisting of a ball housed in a socket containing sensors to detect rotation of the ball about two axes—like an upside-down mouse with an exposed protruding ball. The user rolls the ball with the thumb, fingers, or the palm of the hand to move a cursor. Large tracker balls are common on CAD workstations for easy precision.