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Trackball and keyboard of Apple Powerbook computer

Trackball and keyboard of Apple Powerbook computer

T415/0077

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Credit

PHILLIP HAYSON / SCIENCE PHOTO LIBRARY PHILLIP HAYSON / SCIENCE PHOTO LIBRARY

Caption

Computer trackball and keyboard. View of an Apple Powerbook computer, showing the trackball (mouse device) and part of the keyboard. Like the hand- operated mouse of other computers, the trackball is a more compact version used in small handheld or laptop computers. As the ball is rotated, electronic detectors pick up the ball's movements and translate them into corresponding movements of a pointer or other icon on the computer screen. The trackball makes it possible for novices to use computer programs without having to enter complex codes on the keyboard.

Release details

Model release not required. Property release not required.

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