[net.works] Track balls don't have buttons WORKS Digest V3 #9

RICH.GVT@OFFICE-3 (04/09/83)

But trackballs DO have buttons.  You can get a stand-alone trackball box 
(similar to a mouse) of the shelf with your choice of 1, 2, or 3 buttons.  Also,
if I recall correctly, your choice of analog or digital output.

-Rich Zellich

Herbison@YALE.ARPA (04/11/83)

From:     "B.J." <Herbison@YALE.ARPA>

    From: Hank.Walker@CMU-CS-VLSI.ARPA

    Track balls don't have buttons.  'Nough said.

I worked on a graphics system in 1981 which used track balls with
three buttons.

I have not had experience using mice, but I believe that the track
ball buttons are less useful then mice buttons -- it is hard to
position the cursor while holding down a track ball button.

                                                B.J.
                                                Herbison-BJ@Yale
                                                decvax!yale-comix!herbison-bj
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