Software bloat (Larkin was right)
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From: Phil Hobbs on 21 May 2010 16:32 On 5/21/2010 3:32 PM, D Yuniskis wrote: > Hi Phil, > > Phil Hobbs wrote: >> On 5/21/2010 12:40 PM, D Yuniskis wrote: >>> Computers are good for two things: doing lots of things fast >>> and remembering stuff. They've got me beat on both counts >>> and I'd be foolish to try to compete with them :> >> >> We're all dead in the long run. ;) >> >> I do some work for a small company that uses the sequential system. >> The problem I run into is in trying to change anything--you have to >> dig through all sorts of irrelevant things to find the next resistor >> value up. > > If you have good search capabilities, then its simple. > Search for all "resistors" of the desired type (package, > power handling, tolerance, composition, etc.) then sort > by value. > > The trick is getting all the right *information* into a > "description". > > By contrast, if there is a part number assigned ("reserved"!) > for every value, then you can come up with a part number > only to discover they've never *purchased* any of that value > before (but diligently set aside a "hole" in the part numbering > sequence "just in case it is ever needed"). > > What, I assume, you *really* want is to know which parts the > company is already using so you can leverage that -- instead > of arbitrarily picking a value (since often many values > "will work") and designing that in. > > You can *sometimes* get this information by looking at > quantity on hand *and* last buy/used date. I.e., just because > there are 300 of them in stock doesn't mean anything else > in the company uses that component *now* > > (granted, resistors are cheap. but, not all components are! > if you were picking memory devices, you'd surely want to > pick something that *helps* their quantities rather than > dilutes them) I'm talking about standing in the stockroom, not at my desk. Having 0402 resistors all mixed in with 0805 capacitors and BNC connectors is maddening. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: D Yuniskis on 21 May 2010 16:59 Phil Hobbs wrote: > On 5/21/2010 3:32 PM, D Yuniskis wrote: >> (granted, resistors are cheap. but, not all components are! >> if you were picking memory devices, you'd surely want to >> pick something that *helps* their quantities rather than >> dilutes them) > > I'm talking about standing in the stockroom, not at my desk. Having > 0402 resistors all mixed in with 0805 capacitors and BNC connectors is > maddening. Ah, most firms I've worked with don't let anyone other than "stockroom personnel" into the stockroom. I.e., it's not a "store"...
From: Joel Koltner on 21 May 2010 17:07 "D Yuniskis" <not.going.to.be(a)seen.com> wrote in message news:ht6rr9$9fq$1(a)speranza.aioe.org... > Ah, most firms I've worked with don't let anyone other than > "stockroom personnel" into the stockroom. I.e., it's not a "store"... That can work if there's a separate stockroom that keeps "engineering prototype" parts (or whatever you want to call them) -- Tektronix did this --, but if not, I think it's a bad idea -- pretty much guarantees that you'll end up with a lot of parts serve largely identical functions: Even with the best electronic inventory system, you can't usually guarantee form, fit, and function without taking a look at the physical part... and if it comes down to getting a physical part requiring just as much effort and being slower than just spec'ing a new one that you got as a sample of from your last DigiKey order, most people are going to go with the later. Additionally, I think most people can far more quickly get an idea of the "kinds" of things the company has in stock by browsing the stockroom shelves a bit than just reading inventory lists. ---Joel
From: John Larkin on 21 May 2010 17:17 On Fri, 21 May 2010 13:59:20 -0700, D Yuniskis <not.going.to.be(a)seen.com> wrote: >Phil Hobbs wrote: >> On 5/21/2010 3:32 PM, D Yuniskis wrote: >>> (granted, resistors are cheap. but, not all components are! >>> if you were picking memory devices, you'd surely want to >>> pick something that *helps* their quantities rather than >>> dilutes them) >> >> I'm talking about standing in the stockroom, not at my desk. Having >> 0402 resistors all mixed in with 0805 capacitors and BNC connectors is >> maddening. > >Ah, most firms I've worked with don't let anyone other than >"stockroom personnel" into the stockroom. I.e., it's not a "store"... Our stockroom is open to all... especially me... especially on weekends. The stainless steel hardware carousel is especially nice. We encourage employees to help themselves to moderate quantities of goodies, as long as production won't be impacted. We have a document that define how to assign part numbers, and we use it. A snippet of our stock summary looks like this... 131-5591 RES 0603 4.12K 1% 131-5621 RES 0603 4.42K 1% 131-5650 RES 0603 4.7K 5% 131-5660 RES 0603 4.87K 1% 131-5662 RES 0603 4.87K 0.1% 131-5671 RES 0603 4.99K 1% 131-5680 RES 0603 5.1K 5% 131-5682 RES 0603 5.1K 0.05% 131-5711 RES 0603 5.49K 1% 131-5720 RES 0603 5.6K 5% 131-5751 RES 0603 6.04K 1% 131-5801 RES 0603 6.81K 1% 131-5811 RES 0603 6.98K 1% 131-5840 RES 0603 7.5K 5% 131-5842 RES 0603 7.5K 0.1% 131-5871 RES 0603 8.06K 1% 131-5872 RES 0603 8.06K 0.05% 131-5891 RES 0603 8.45K 1% 131-5921 RES 0603 9.09K 1% 131-6000 RES 0603 10K 5% 131-6001 RES 0603 10K 1% 131-6002 RES 0603 10PPM 10K 0.05% 131-6151 RES 0603 14.3K 1% 131-6170 RES 0603 15K 5% 131-6241 RES 0603 17.8K 1% 131-6252 RES 0603 25PPM 18K 0.5% 131-6290 RES 0603 20K 5% 131-6291 RES 0603 20K 1% That's trimmed; it's actually 120 columns wide, with lots more info. Note that there are three 10K 0603 resistors in stock, all cozy in adjacent bins. The 0.05% resistors are the Susumu thinfilms, which are manufactured in apparently random values. And there's a full page for each part, with more stuff. ftp://jjlarkin.lmi.net/MAX.jpg John
From: Joerg on 21 May 2010 17:43
Joel Koltner wrote: > "Didi" <dp(a)tgi-sci.com> wrote in message > news:2167cdf2-6c00-40d0-a324-b43ddde07edc(a)l6g2000vbo.googlegroups.com... >> Noticed this just now. Bulgaria claims to be non-communist last >> two decades. But almost every country claims that nowadays just as >> almost every country fails the real test on it so it >> is nothing worth the attention :-). > > I expect that, e.g., in China they have the filters sets so that > Googling "communist China" returns zero results. :-) > > Thanks for the response, Didi -- I'm impressed with how much you were > able to accomplish with so little. > There is an old German saying "Not macht erfinderisch", loosely translated so that it's true meaning shows, "Lack of resources leads to ingenuity". With one guy from Poland who had fled the regime back then and made it into the west that was pretty extreme. When a car engine died he looked at it, looked at his watch, "Hey, we still got several hours until it gets dark, let's take it apart and see if we can fix it. But first, let's have a beer". -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |