| 单词 | track-ball |
| 释义 | > as lemmastrack-ball track-ball n. Computing an input device in the form of a small ball that is rotated in a holder to move a cursor on the screen; = tracker ball n. at tracker n.1 Compounds. ΘΚΠ society > computing and information technology > hardware > peripherals > [noun] > control devices > mouse mouse1965 rollerball1966 track-ball1969 tracker ball1969 1969 M. H. Mehr in Internat. Symposium Man-Machine Systems V Positioning to 0·1% of the screen diameter could be accomplished in 3–4 seconds which compares favorably with the published track ball data. 1972 Acta Crystallogr. A. 28 S 253/2 The operator can interact with the display by means of a track-ball cursor. 1983 Austral. Personal Computer Aug. 60/2 Lisa's engineers are sometimes criticised for selecting the mouse rather than other quick data input devices—notably the trackball, touch-screen and light-pen. < as lemmas |
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