Macbeth already had plans to murder Macduff after his encounter with the Witches (4.1.83), but Macduff's trip to England so antagonizes Macbeth that he orders the slaughter of Macduff's entire household, culminating in this horrifying scene.
trackball-Computer Definition. 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.rackball-Computer Definition. 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.
If you're already an old pro at trackball maneuvering, the pricey $120 Kensington Expert Mouse Wireless gives you the same mousing experience, minus the cable. You don't eliminate all the cables, however--the unit comes with a USB-based corded RF transceiver, which sits on the desk. You get a wrist rest attachment, as well. If you're a mouse user who wants to make a switch, be aware that trackballs require a lengthy adjustment period. Testers who were accustomed to regular mice reported that the Expert Mouse Wireless felt uncomfortable at first.