Hank.Walker@CMU-CS-VLSI.ARPA (04/06/83)
Track balls don't have buttons. 'Nough said.
chin%UCBKIM@Berkeley (04/06/83)
From: chin%UCBKIM@Berkeley (David Chin) True track balls don't have buttons, but you can always put buttons on the package containing the track-ball (as video game fans know). For example, if the track-ball were built into the keyboard (perhaps where numeric keypads are usually found), then one could put "buttons" above the track-ball. This track-ball in the keyboard package would be very convenient for those of us who like to put our detachable keyboards on our laps and sit back away from the screen (and the mouse). There may be other reasons why track-balls are inferior to mice as an interface, but I don't think that the lack of buttons on the track-ball per se is a real issue. Dave Chin chin@berkeley ucb-vax!chin