Detachable convertible mouse-trackball pointing device for use with a computer

摘要: A laptop computer includes a cavity into which mouse/trackball pointer unit may be releasably mounted. The is electrically coupled to the by retractable wire or infrared radio frequency wireless techniques, and used as trackball when disposed within keyboard cavity. User-operable switches are accessible from surface of unit. However, work space permits, removed cavity, inverted mouse. Additional user-operable also mouse upper-surface housing has single opening through rotatable ball protrudes in each mode. sense switch automatically ascertains mode relative orientation housing. In mode, decouples prevent their inadvertently signaling moved about. pressure cap mechanism urges toward an differential urging force applied depending upon whether operation presently being used.