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NeddySeagoon
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PostPosted: Sun Jan 13, 2013 7:34 pm    Post subject: Reply with quote

gerard82,

You might like this link.
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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gerard82
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PostPosted: Mon Jan 14, 2013 7:50 pm    Post subject: Reply with quote

Thanks NeddySeagoon,


Where were you when Kennedy was shot: see below
Did you watch the first transatlantic TV images: n/a
Did you watch Neil Armstrong step onto the Moon: yes
Did you watch England win the World Cup: no,never watch sport events
Can you remember the '60s: not like USians or Europeans can.

I lived in Surinam from 1953 to 1970.

Kennedy:I was sitting on the passenger seat of a pick-up truck,driven by an American colleague.
We were on our way to the mess to have lunch.Someone called him on the two way radio to tell him.
This was on the site where a hydroelectric dam was being built.

Saw Neil Armstrong the day after on Surinam TV.

In Surinam nothing happened like in the US or Europe concerning the "60's".

My work made me visit the laboratory of the alumina refinery and aluminium smelter regularly.
One of the Surinam technicians was a staunch Muslim and before the landing he said he was convinced
this mission would fail because Allah wouldn't allow humans to go there.
He was very confused when it succeeded.

Gerard.
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To install Gentoo I use sysrescuecd.Based on Gentoo,has firefox to browse Gentoo docs and mc to browse (and edit) files.
The same disk can be used for 32 and 64 bit installs.
You can follow the Handbook verbatim.
http://www.sysresccd.org/Download
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drhouse123
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PostPosted: Mon Jan 14, 2013 11:22 pm    Post subject: Reply with quote

gerard82 wrote:
Hi drhouse123,
I started using Gentoo December 2003.(Gentoo-1.4)
Joined the forum a month later.
Before that I used to buy cd's with Linux distro's on it.
Slackware,RedHat,Suse and others.
IMO Gentoo beats them all,leanness,configurability,well documented,terrific forum.
Stopped using Windows about the time XP came out.
Gerard.


Thanks for answer, Gerard. It's a very great. I respect you very much.
I started using Gentoo from 2010 after using a lot of linux distros. I like very much Gentoo Documentations, and Gentoo Gurus and etc., they're all great.

P.S. Hello Netherlands from Kazakhstan
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krinn
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PostPosted: Tue Jan 15, 2013 12:33 am    Post subject: Reply with quote

I don't know what to say gerard82, but WOW ! i hope my brain will still allow me at your age to do something like handling computer and still been able to learn a distro like gentoo. Something still hard for some people, even with a young age (so who raise with a computer culture).
That sad thread remember me mike hunt :/
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_______0
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PostPosted: Wed Jan 16, 2013 2:21 pm    Post subject: Reply with quote

gerard82 wrote:
Thanks for all the comments.
Yes I am from the electronics tube era.
Reminiscing about that is sometimes fun.
I witnessed the replacement of tubes by transistors and integrated circuits.
I started my working life as a radio repair man.
Later got into 2-way radio.
And then into process control by both electronic and pneumatic instruments.
This was all analogue.
When I was 50 I had to learn digital.
I still remember how hard it was to grasp that.
What made me understand how it operated was a diagram of a processor which showed the clock pulses and opening and closing of gates.
(Hope that's the correct terminology )
During military service as a draftee I attended radar school where you learn about the "T/R" switch which is a simple gate.
I still remembered that.
I wrote quite a few PLC programs and some assembler for the processor of the AppleII.
If you wonder about pneumatic process instruments,they are still being produced.
And they're capable of quite a bit of calculations.Square root extraction is the most used (for flow meters).

Gerard.


Your netx step, following this natural progression, is: quantum computing.

By now I am pretty sure it'll be a walk in the park for you.

What's 'pneumatic process instruments'? I've looked online but they seem to be valves for liquid control.
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gerard82
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PostPosted: Wed Jan 16, 2013 3:43 pm    Post subject: Reply with quote

@_______0,
Of course valves play a large role in process control.
But total process control means instruments that control temperature,pressure,flow etc.
Just a valve is not enough.
You need to have "transmitters" that convert process data into signals that can be processed.
You need controllers that will take a "setpoint" to keep that process quantity at that value.
Simple example: cruise control,you set it at a certain speed and the car will keep that speed regardless of inclines or declines.
With pneumatic instrumentation all process quantities are converted to air pressure.
0..100% of the range becomes 3..15 psi (or 0.2..1 bar when metric).
The contoller output will set a valve in a position to maintain the desired process value.

In certain cases pneumatic process control is apparently preferred although it costs a lot more than electronic.
Especially hazardous environments like oil refineries.
Google pneumatic instruments.

Gerard.
_________________
To install Gentoo I use sysrescuecd.Based on Gentoo,has firefox to browse Gentoo docs and mc to browse (and edit) files.
The same disk can be used for 32 and 64 bit installs.
You can follow the Handbook verbatim.
http://www.sysresccd.org/Download
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steveL
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PostPosted: Wed Jan 16, 2013 5:14 pm    Post subject: Reply with quote

gerard82 wrote:
total process control means instruments that control temperature,pressure,flow etc.

You need to have "transmitters" that convert process data into signals that can be processed.
You need controllers that will take a "setpoint" to keep that process quantity at that value.

The contoller output will set a valve in a position to maintain the desired process value.

In certain cases pneumatic process control is apparently preferred although it costs a lot more than electronic.

Sounds fun. Reminds me of this geezer I met in the States, who was telling me they still use 8-bit CPUs in some industrial control processes (I grew up on 8-bit cpus, though i'm sure you have stories from the 4-bit days;) Mitsubishi and some other Japanese firms were mentioned; we both thought it odd that the US doesn't manufacture its own any more, despite being a huge market for them.

(Yes I'm aware of modern manufacturing processes and 'globalisation', it still is weird imo. Personally I think chip farb is of strategic importance.)
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gerard82
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PostPosted: Wed Jan 16, 2013 6:25 pm    Post subject: Reply with quote

steveL I have to disappoint you,never worked with 4bit chips.
Motorola (too bad it was sold) once made an 8 bit processor that was much different from all the others.
I forgot the details but it could be made to switch all kinds of registers.
Had to familiarize me for a plan to use them to control the voltage of aluminium smelter pots.
Never materialized though,forgot why.
But for most of these things 8 bits is plenty unless you run into real-time problems.
Gerard.
_________________
To install Gentoo I use sysrescuecd.Based on Gentoo,has firefox to browse Gentoo docs and mc to browse (and edit) files.
The same disk can be used for 32 and 64 bit installs.
You can follow the Handbook verbatim.
http://www.sysresccd.org/Download
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