From: wmbjk on
On 23 Dec 2006 23:25:32 -0800, "James" <j0069bond(a)hotmail.com> wrote:

>
>Gazzamoller wrote:
>> James,
>> Before you purchase a system, Google search "rusty solar water heating
>> panels" and have a good read of the results.
>
>
>Interesting. I wonder if it's brand related. Anyone know of trouble
>free systems that lasted 15 years or more?

There isn't any chance of rust or scale on a proper closed-loop setup.
Ours is about 10 years old.

Wayne
From: Morris Dovey on
"Jeff" <dont_bug_me(a)all.uk> wrote in message
news:Ubbjh.2344$pQ3.868(a)newsread4.news.pas.earthlink.net...

| Better than resurrecting a programming language that deserved
| to die decades ago...

Probably, but I'd guess it's easier than talking Nick into programming
in C. <vbg>

I tried it out and scanned through the old M$ documentation and it's
every bit as bad as I remembered (both the documentation and the
implementation). I even recognized the graphics stuff (that I'd
forgotten about.)

[ for Nick: ]

Were you aware that there's a free software development kit for just
about every currently produced CPU (including uC and uP) for the C
language? That would really open up your controller options and
(probably) enable substantial cost savings...

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto


From: nicksanspam on
Morris Dovey <mrdovey(a)iedu.com> wrote:

>"Jeff" <dont_bug_me(a)all.uk> wrote in message
>
>| Better than resurrecting a programming language that deserved
>| to die decades ago...
>
>Probably, but I'd guess it's easier than talking Nick into programming
>in C. <vbg>

I took a grad course in C and was the only one who handed in the first
assignment on time (the VU 1 and 2B3s were broken a lot.) It worked, but
the fascist prof gave me an F on that program because I used a GOTO :-)
C is horrible. No error checking. Practically anything you type gets
executed. Unreadable. The only thing worse is FORTH. Or ALWAC III code
tuned to the drum rotational latency.

>I tried it out and scanned through the old M$ documentation and it's
>every bit as bad as I remembered (both the documentation and the
>implementation). I even recognized the graphics stuff (that I'd
>forgotten about.)

Hordes of 3rd graders used to write BASIC programs at Dartmouth...

>[ for Nick: ]
>
>Were you aware that there's a free software development kit for just
>about every currently produced CPU (including uC and uP) for the C
>language? That would really open up your controller options and
>(probably) enable substantial cost savings...

Hey, why don't you write a BASIC interpreter in C? :-) Or python,
or Minsky's 4-state 7-symbol UTM language.

Nick

From: dold on
In alt.energy.renewable nicksanspam(a)ece.villanova.edu wrote:
> I took a grad course in C and was the only one who handed in the first
> assignment on time (the VU 1 and 2B3s were broken a lot.) It worked, but

If that was an AT&T 3B2, it might have been older than you are.
If equipment breakage was th only reason that you turned in your
assignment before others, that isn't much of a statement.

> the fascist prof gave me an F on that program because I used a GOTO :-)

That statement deserves a smiley, because it's laughable.

--
---
Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5

From: Morris Dovey on
<nicksanspam(a)ece.villanova.edu> wrote in message
news:emrv1s$ijd(a)acadia.ece.villanova.edu...
| Morris Dovey <mrdovey(a)iedu.com> wrote:
|
| >"Jeff" <dont_bug_me(a)all.uk> wrote in message
| >
| >| Better than resurrecting a programming language that deserved
| >| to die decades ago...
| >
| >Probably, but I'd guess it's easier than talking Nick into
programming
| >in C. <vbg>
|
| I took a grad course in C and was the only one who handed in the
first
| assignment on time (the VU 1 and 2B3s were broken a lot.) It worked,
but
| the fascist prof gave me an F on that program because I used a GOTO
:-)
| C is horrible. No error checking. Practically anything you type gets
| executed. Unreadable. The only thing worse is FORTH. Or ALWAC III
code
| tuned to the drum rotational latency.

Interesting. I've only ever written one C program that actually
/needed/ a goto statement - but I'm willing to take your side in the
argument. :-)

Well I did code in PPR for the Bendix G2 (no RAM, had to calculate how
far the drum would rotate and place the next instruction to be fetched
at that point) - and I still love APL - and both of those are
generally considered unreadable.

I had the same feeling about C compiling anything written when I
started. It's the problem every newbie has with the language. All I
can say is that the problem seems to go away as the programmer becomes
more savvy (easy for me to say - I wrote it for a quarter century).

| >I tried it out and scanned through the old M$ documentation and
it's
| >every bit as bad as I remembered (both the documentation and the
| >implementation). I even recognized the graphics stuff (that I'd
| >forgotten about.)
|
| Hordes of 3rd graders used to write BASIC programs at Dartmouth...

You may have just answered a question that's been nagging at me for
decades. <g>

The original Dartmouth BASIC was really bare bones, though - not much
there to screw up with.

| >Were you aware that there's a free software development kit for
just
| >about every currently produced CPU (including uC and uP) for the C
| >language? That would really open up your controller options and
| >(probably) enable substantial cost savings...
|
| Hey, why don't you write a BASIC interpreter in C? :-) Or python,
| or Minsky's 4-state 7-symbol UTM language.

I made my contribution to programming chaos by implementing BNF as a
programming language for interpreters, translators, and compilers;
published HowTo and source (DDJ, March '84); then retired from the
programming language battlefield.

I wasn't inviting a language war - your options really are limited if
you require the BASIC interpreter; and they really are wide open (and
the bulk of your code most probably can be easily ported to new
architectures) if you implement in C. If you run into difficulties I,
or any of the folks on news:comp.lang.c, can help.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto