As the mouse moves, aīall set in a depression on the underside of the mouse rollsĪccordingly. Mouse in hand, the computer user can select, move, and changeĪ conventional roller-ball mouse is slid across the surface Pointer that's normally shaped like an arrow. The mouse is a device used to manipulate an on-screen The most commonly used computer pointing device, first introduced by Douglas Engelbart in 1968. The pocket mouse and the kangaroo rats and mice are members of the suborder Sciuromorpha, or squirrellike rodents. Still other families of the Myomorpha include the dormouse, jumping mouse, and jerboa. The cosmopolitan family Cricetidae includes the native New World mice, such as the deer mouse, American harvest mouse ( Reithrodontomys), the carnivorous grasshopper mouse, the South American field mice, the pack rat, and the rice rat it also includes the various Old and New World species of vole, hamster, lemming, muskrat, and gerbil. The Old World family Muridae includes the now ubiquitous house mouse, as well as a great variety of wild-living Old World species, including the Old World field mouse, the tiny European harvest mouse ( Micromys minutus) and the African tree mice. The approximately 1,100 species in this enormous group are classified in several families.
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