Recovering the ROM of an IBM 5100 using OCR (among other things)

[Marc Howard]

Look at  http://www.tapeheads.net/showthread.php?t=39958

Marc

On Thu, Jun 27, 2019 at 8:30 AM Mark J. Blair via cctalk <
cctalk at classiccmp.org> wrote:

>
>
> > On Jun 27, 2019, at 8:21 AM, Warner Losh via cctalk <
> cctalk at classiccmp.org> wrote:
> >
> > Back when I got to school and I was hanging around the computer room on
> > campus (back when it was THE room on campus with computers), I saw this
> > half-dollar sized plastic fob on the desk and asked what it was for. The
> > on-staff operator took a mag tape off the rack, opened it up and set the
> > end of the tape on the table. She then took the fob and placed it on the
> > end of the tape and all the iron filings that were suspended in the
> liquid
> > inside the fob aligned to the magnetic fields of the tape.
>
> I don't recall seeing one of those in either of the computer rooms I
> worked in as a student back in the late 1980s. I would love to get my hands
> on one (or make one?) now.
>
> --
> Mark J. Blair, NF6X <nf6x at nf6x.net>
> http://www.nf6x.net/
>
>