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Design Tradeoffs...

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Paul Carpenter...
Posted: Fri Oct 23, 2009 8:20 pm
Guest
Having spent several rounds of initial specifications with a potential
customer, that is less likely to be a viable project as they want to

"Squeeze a gallon into a pint pot"

I could see that the prospect was actually trying to get all THREE
sides of the Quality Triangle often referred to as Tradeoff Triangle

Good
/ \
/ \
/ \
/ \
Fast ---- Cheap

"Pick any two"

I actually think these days it should become the

"Tradeoff Square"

Good ----------- Small
| |
| |
| |
Cheap ------------ Fast

"Pick any THREE"

In the ever miniaturising world of keyboards too small for anyone
other than a mouse to use.

--
Paul Carpenter | paul at (no spam) pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/> PC Services
<http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font
<http://www.gnuh8.org.uk/> GNU H8 - compiler & Renesas H8/H8S/H8 Tiny
<http://www.badweb.org.uk/> For those web sites you hate
 
Tim Wescott...
Posted: Sat Oct 24, 2009 5:15 am
Guest
On Fri, 23 Oct 2009 17:20:51 +0100, Paul Carpenter wrote:

Quote:
Having spent several rounds of initial specifications with a potential
customer, that is less likely to be a viable project as they want to

"Squeeze a gallon into a pint pot"

I could see that the prospect was actually trying to get all THREE sides
of the Quality Triangle often referred to as Tradeoff Triangle

Good
/ \
/ \
/ \
/ \
Fast ---- Cheap

"Pick any two"

I actually think these days it should become the

"Tradeoff Square"

Good ----------- Small
| |
| |
| |
Cheap ------------ Fast

"Pick any THREE"

In the ever miniaturising world of keyboards too small for anyone other
than a mouse to use.

Or you fold "small" into "good".

Sometimes you just have to say 'no' to a potential client, even if you're
in dire straits -- if they can't see why they can't have all three sides
of the product triangle, they probably can't understand the three sides
of the project management triangle either, and will get bent out of shape
when they find out that you actually want to get _paid_ for your work,
heaven forbid.

--
www.wescottdesign.com
 
Joe G (Home)...
Posted: Sat Oct 24, 2009 7:13 pm
Guest
<snip>

I see projects having 4 factors and a variation in one factor effects the
other 3.

QUALITY
COST
TIME
EXPERINCE

If you want a cheaper product then you can reduce the quality /
specification.

AND another major problem is the client's have done they business plan
homework for the product.

Joe
 
Paul Carpenter...
Posted: Sat Oct 24, 2009 8:10 pm
Guest
In article <4ae3198b$0$5424$afc38c87 at (no spam) news.optusnet.com.au>,
joe.g at (no spam) optusnet.com.au says...
Quote:
snip

I see projects having 4 factors and a variation in one factor effects the
other 3.

QUALITY
COST
TIME
EXPERINCE

If you want a cheaper product then you can reduce the quality /
specification.

AND another major problem is the client's have done they business plan
homework for the product.

I sense a bit of cynism about their 'homework' there..

--
Paul Carpenter | paul at (no spam) pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/> PC Services
<http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font
<http://www.gnuh8.org.uk/> GNU H8 - compiler & Renesas H8/H8S/H8 Tiny
<http://www.badweb.org.uk/> For those web sites you hate
 
Joe G (Home)...
Posted: Sun Oct 25, 2009 5:15 am
Guest
"Paul Carpenter" <paul at (no spam) pcserviceselectronics.co.uk> wrote in message
news:MPG.254d373cb4f16dd7989732 at (no spam) 172.16.0.1...
Quote:
In article <4ae3198b$0$5424$afc38c87 at (no spam) news.optusnet.com.au>,
joe.g at (no spam) optusnet.com.au says...
snip

I see projects having 4 factors and a variation in one factor effects the
other 3.

QUALITY
COST
TIME
EXPERINCE

If you want a cheaper product then you can reduce the quality /
specification.

AND another major problem is the client's have done they business plan
homework for the product.

I sense a bit of cynism about their 'homework' there..


Sorry - I meant "haven;t" done their home work.


I had some asked me to build an RF product.... but with out understanding
what was required and how much work was involved... more than just the
electronics..... tooling for plastics, hardware and
mechatonics... Geez..


Joe
 
 
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