DEC VT20 boot device

Paul Koning paulkoning at
Sun Aug 11 19:25:59 CDT 2019

> On Aug 11, 2019, at 7:45 PM, Eric Smith via cctalk <cctalk at> wrote:
> On Sun, Aug 11, 2019 at 1:18 AM Bob Smith via cctalk <cctalk at>
> wrote:
>> The VT20 design team was, iirc, John Kirk for the video, and me for
>> the Unibus interface in the first version. The one with the slick
>> one shown here,
> That looks pretty nice, since externally it just looks like a VT05 with
> extra buttons.
> The vt20/b (photos in same directory), on the other hand, is one of the
> ugliest terminals I've ever seen.

It looks a bit like an early concept for what became the VT71.  The terminals directory also shows a thing called VT21 which appears to be identical to the VT71.  I wonder if the VT20/b and VT21 were engineering prototypes that were later released under the name VT71.


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