Ken, What's the mobile app called? PS Sent via BlackBerry by AT&T -----Original Message----- From: Ken Wyatt <ken@xxxxxxxxxxxxxxxx> Sender: si-list-bounce@xxxxxxxxxxxxx Date: Thu, 10 May 2012 09:00:03 To: <si-list@xxxxxxxxxxxxx> Reply-To: ken@xxxxxxxxxxxxxxxx Cc: Martin Euredjian<martin_05@xxxxxxxxxxxxxx> Subject: [SI-LIST] Re: OT: Mobile apps for engineers Hi All, Just wanted to provide an update on an iOS app I found that has a nice equation solver very similar to what was built in to the HP95/100/200LX calculators..."PowerOne SE" for the iPad. They also have a version for the iPhone. Will go algebraic or RPN and has numerous predefined templates, as well as user-defined for the equation solver feature. Very slick. _______________________ Kenneth Wyatt Wyatt Technical Services LLC Woodland Park, CO Email Me! | Web Site | Blog Subscribe to Newsletter Connect with me on LinkedIn On Feb 25, 2012, at 11:12 PM, Martin Euredjian wrote: > Thanks for the feedback. No problem at all with the delay. > I am working on a couple of projects at the moment. As soon as I get clear > the equation solver is what I am going to shoot for. I do have some ideas > that go beyond what the 200LX could do. There are a number of things that > are possible today that the 200LX simply could not approach due to > limitations in memory and raw speed. > > Feel free to email me off-list with any ideas/requests, etc. > > -Martin > > > > > ________________________________ > From: Ken Wyatt <ken@xxxxxxxxxxxxxxxx> > To: Martin Euredjian <martin_05@xxxxxxxxxxxxxx> > Cc: "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx> > Sent: Saturday, February 25, 2012 1:36 PM > Subject: [SI-LIST] Re: OT: Mobile apps for engineers > > Hi Martin, > Please excuse the delay, as I'm going through older emails today. > > HP did it right with the HP 95, 100 and 200LX clamshell PDA/calculators. They > built in a super equation solver where you could enter in a generalized > formula, defining named variables. Once the equation was entered/saved, you > could scroll down the list of equations, select one and it would display all > the variable names. Entering data for any of the names, but one, would solve > for the one. > > That's what I would very much like to see on the iPhone. > > Cheers, Ken > _______________________ > Kenneth Wyatt > Wyatt Technical Services LLC > Woodland Park, CO > Email Me! | Web Site | Blog > Subscribe to Newsletter > Connect with me on LinkedIn > > On Nov 1, 2011, at 10:37 PM, Martin Euredjian wrote: > >> I forgot to mention this. There are spreadsheet tools available for iOS. >> Frankly, they are a little bit of a pain to use. If you fly in Excel you'd >> hate having to poke everything with your fingers. It's clunky and slow. I >> have used them but only when I absolutely, positively have no other choice. >> There is no way I'd develop the kinds of complex calculation sheets I've >> done in Excel on a phone or even on an iPad. >> My focus, in terms of mobile apps for engineering, would center around apps >> that would make sense for us to use. I have a lot of custom code developed >> over the years on my HP41 ~ 48. I am looking at some of those tools to see >> how well they might translate into this century. >> >> Even though I have an HP41 emulator on my iPhone I still reach for a real HP >> calculator 95% of the time. Of course, it helps to have a small collection >> of them spread around the office :-). >> >> -Martin >> >> >> >> ________________________________ >> From: alfred1520list <alfred1520list@xxxxxxxxx> >> To: Martin Euredjian <martin_05@xxxxxxxxxxxxxx>; si-list@xxxxxxxxxxxxx >> Sent: Tuesday, November 1, 2011 3:55 PM >> Subject: Re: [SI-LIST] OT: Mobile apps for engineers >> >> What I would find useful is something more than an App, more like Excel which >> is a platform where any number of custom calculations can be implemented. >> >> I have created a Perl based engine for the Android for myself. It reads a >> text file specifying the formula, e.g. for dBm<->dBuV conversion: >> >> exp(log(10)*($dBm/10-3)) = (exp(log(10)*($dBuV/20-6)))**2 / $R >> >> you can provide two of the three $dBm, $dBuV, and $R and solve for >> the 3rd unknown. You can also have multiple variables on either >> of the equal sign. You can only solve for 1 unknown. It also bombs >> all the time due to the crude implementation of the Newton's method. >> >> This is fashioned after the Solver in the antiquated HP 200LX palmtop. >> A faithful reimplementation of that gem would be a great tool. >> >> >> Best Regards, >> Alfred Lee >> >> ----- Original Message ----- From: "Martin Euredjian" >> <martin_05@xxxxxxxxxxxxxx> >> To: <si-list@xxxxxxxxxxxxx> >> Sent: Tuesday, November 01, 2011 1:25 PM >> Subject: [SI-LIST] OT: Mobile apps for engineers >> >> >>> Over the years I've developed and used a number of custom little tools that >>> I've used while designing products. They span a range from optimizing >>> resistor divider calculations to analyzing DRAM timing and graphing >>> theoretical power distribution network performance. Most all of these I >>> wrote in Excel using the embedded VB language. >>> Now I am thinking that these and other tools could be of use to others and >>> decided to start down the path of defining a number of apps to write >>> (initially for iOS) along these lines. >>> >>> The reason for this post is to reach out to the SI community in order to >>> understand what you might need. I know what I've needed when I've done SI >>> work on my own boards. I would like to understand what some of you might be >>> interested in having as handy tools to use during the course of your work. >>> These don't have to be purely SI-related but can span a range of related >>> disciplines. >>> >>> >>> Thanks, >>> >>> -Martin >>> >>> >>> ------------------------------------------------------------------ >>> To unsubscribe from si-list: >>> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field >>> >>> or to administer your membership from a web page, go to: >>> //www.freelists.org/webpage/si-list >>> >>> For help: >>> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field >>> >>> >>> List technical documents are available at: >>> http://www.si-list.net >>> >>> List archives are viewable at: >>> //www.freelists.org/archives/si-list >>> >>> Old (prior to June 6, 2001) list archives are viewable at: >>> http://www.qsl.net/wb6tpu >>> >>> >> ------------------------------------------------------------------ >> To unsubscribe from si-list: >> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field >> >> or to administer your membership from a web page, go to: >> //www.freelists.org/webpage/si-list >> >> For help: >> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field >> >> >> List technical documents are available at: >> http://www.si-list.net >> >> List archives are viewable at: >> //www.freelists.org/archives/si-list >> >> Old (prior to June 6, 2001) list archives are viewable at: >> http://www.qsl.net/wb6tpu >> >> > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu