bi xoay
bi xoay, trackball
Bi xoay lร mแปt loแบกi chuแปt mรกy tรญnh di chuyแปn con trแป trรชn mร n hรฌnh bแบฑng cรกch lฤn mแปt quแบฃ bรณng. Nรณ tiแปn lแปฃi vรฌ khรดng cแบงn di chuyแปn cแป tay nhiแปu.
Khรดng giแปng nhฦฐ chuแปt thรดng thฦฐแปng, nรณ cรณ thแป ฤฦฐแปฃc sแปญ dแปฅng แป mแปt vแป trรญ cแป ฤแปnh. Bi xoay ฤแบทc biแปt phแป biแบฟn trong giแปi thiแบฟt kแบฟ vร nhแปฏng ngฦฐแปi lร m cรดng viแปc ฤแป hแปa.
A trackball is a type of mouse that moves the cursor on a computer screen by rolling a ball. It's convenient because it doesn't require much wrist movement.
Unlike a regular mouse, it can be used in a fixed position. It is especially popular among designers and those who do graphic work.
ฤฦฐแปฃc phรกt triแปn bแปi Hแบฃi quรขn Canada vร o nฤm 1952, bi xoay cรณ mแปt lแปch sแปญ thรบ vแป, ฤรฃ ฤฦฐแปฃc phรกt minh trฦฐแปc cแบฃ chuแปt mรกy tรญnh. Ban ฤแบงu nรณ ฤฦฐแปฃc tแบกo ra ฤแป ฤiแปu khiแปn mร n hรฌnh radar.
Thiแบฟt kแบฟ cรดng thรกi hแปc cแปงa nรณ lร m giแบฃm sแปฑ cฤng thแบณng แป cแป tay, khiแบฟn nรณ trแป nรชn phแป biแบฟn ฤแปi vแปi cรกc chuyรชn gia lร m viแปc nhiแปu giแป trรชn mรกy tรญnh. Nรณ cho phรฉp ฤiแปu khiแปn chรญnh xรกc, khiแบฟn nรณ ฤแบทc biแปt ฤฦฐแปฃc ฦฐa chuแปng trong cรกc lฤฉnh vแปฑc CAD vร thiแบฟt kแบฟ ฤแป hแปa.