Glass memory?

[Mike Stein]

Hey, I've got one of those somewhere (the delay line, not the terminal ;-)
)!

I do still use the cabinet as a desk, as well as a few parts here and
there; to think that today something like an Arduino nano can replace that
desk-sized cabinet containing a substantial power supply and a card cage
with at least a dozen cards IIRC... I'm still amazed by how far we've come
in less than my lifetime...

m


On Fri, Apr 1, 2022 at 2:30 PM Chuck Guzis via cctalk <cctalk at classiccmp.org>
wrote:

> On 4/1/22 10:27, Paul Koning wrote:
> >
> >
> >> On Apr 1, 2022, at 1:25 PM, Chuck Guzis via cctalk <
> cctalk at classiccmp.org> wrote:
> >>
> >> Wasn't some of this glass delay line memory used in early raster-scanned
> >> computer video displays?
> >
> > I don't know about that one, but a delay line is a key component of a
> PAL (European) system color TV receiver.
>
> I know that the CRT display controller on the CDC 200 series terminal
> (INTERCOM, Export/Import 200 software) used a 10 msec magnetostrictive
> delay line.for image storage.    Glass would seem to be a more
> mechanically robust storage medium.
>
> See:page 1-5
>
> http://bitsavers.org/pdf/cdc/terminal/82128000_200_User_Terminal_Hardware_Reference_Jul68.pdf
>
> Later raster terminals used MOS shift register memory.
>
> The STAR-100 stations used a track on the station microdrum for video
> refresh.
>
>
> --Chuck
>
>