On Sun, 2010-10-31 at 18:12 +0000, Geo wrote:
> My oldest  magazine from the bookshelf is 1948 - I have photographed the=
=20
> cover and a circuit diagram of a receiver:-
> www.8zero.co.uk/circuit.jpg
> www.8zero.co.uk/cover.jpg
>=20
> In the drawing office of a radio factory in 1961 all circuit diagrams=20
> were hand drawn for production, test and service manuals.
> There were no rectangles.

Cool, thanks!

It's amazing that a design over 60 years old still still pretty
recognizable in function to me. Some things at a fundamental level just
don't change that much.

TTYL

--=20
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