3 Jan
2007
3 Jan
'07
3:24 p.m.
Tony Duell wrote:
I was struggling to think of any - but then most of the systems we have are
either 50's / 60's (and tend to use all manner of oddball connectors), or are
late-70's onwards (and so post-date SCART). There seems to be a real blank
spot when it comes to early 70's systems, for some reason. (I'm not at all
clued up on our DEC stuff though, so some of that may well qualify)
Well, the D connector is not really an RF connector
(yes, there are
versions with coaxial connector inserts, when did those come out?). Mind
you, the SCART connecotr is not exactly constnat impedance either!
Indeed; I can't see why a D-type would be any worse, and it would have
eliminated a lot of the problems with SCART types.
Thing is,
SCART was apparently first used in consumer A/V equipment in 1977,
which probably means it was thought up in the mid-70's. Edge connectors and/or
circular DIN connectors were probably more common on computer equipment of
that time, but were D-shell types around by then too?
Well, for home comuputers, maybe (the DIN connector [1], another horrible
thing, beaten only by the mini-DIN IMHO, was not at all common on larger
machines . But the DB25 was already well-established for RS232 serial
connections at that point. [An aside. Am I the only person here to rememebr the
IEC record player
connector? It's a flat thing with 5 flat pins on 0.2" (IIRC) centres, no
overal shroud round the pins like a DIN plug. The pins are arranged
something like :
-- -- | -- |
Every other pin is ground, the other 2 are left and right audio inputs.
Hmm, I've seen those about - I think I've still got one in the junk box
somewhere, although I don't recall what gadget it came from.
cheers
Jules