[rescue] Vector Plotters

[Carl R. Friend]

On 10/05/2015 03:53 PM, Mouse wrote:
>> While vector displays are indeed capable of continuous positioning,
>> as opposed to discrete positioning, the vast majority of vector
>> displays are driven from digital things, via a D/A converter.  So
>> there are discrete steps in there anyway.
>
> Well, line endpoints may be quantized, but that's not to say that the
> rest of the line will be.

    If memory serves, such was the case with a Computek 400-series
display I used to have.  Sadly, it spent too much time on my ex-wife's
porch and acquired the most massive infestation of mice I've ever
seen.  Following the breakup of the relationship, I started to move
it to donate to another "elder-iron enthusiast" and discovered the
horrifying degree of damage.  It got scrapped.  The manual for it is
in a box at RCS/RI.

    Yes, the start and end points were of necessity digitally-
positioned as this thing was on the receiving end of an RS-232
cable, but the interpolation between the points -- including
curves and spirals -- was all in analogue, plotted on a Tek 611
storage display.

    Cheers!
-- 
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| Carl Richard Friend (UNIX Sysadmin)            | Boylston            |
| Minicomputer Collector / Enthusiast            | Massachusetts, USA  |
| mailto:crfriend at rcn.com                        +---------------------+
| http://users.rcn.com/crfriend/museum           | ICBM: 42:20N 71:43W |
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