tag:blogger.com,1999:blog-5710205.post611793818664812546..comments2024-02-08T11:00:53.069-06:00Comments on Gordon's Tech: The iPhone HP 41C emulator (i41CX) - because sometimes madness must be honoredJGFhttp://www.blogger.com/profile/14580785981874040314noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-5710205.post-58350417330154577882019-01-26T10:18:38.616-06:002019-01-26T10:18:38.616-06:00Gordon, you posed this nearly ten-years ago. :o I ...Gordon, you posed this nearly ten-years ago. :o I recently fell into the HP-41C/V/X abyss, having caught the ancient handheld calculator disease. (I'm afraid I have a terminal case!)<br /><br />When I was in university, the HP-41C was a suitable object of lust. I could not afford one, having already bought a TI-59 with the built-in card reader. But I was always an HP/RPN guy, having learned handhelds on a HP-35 and HP-45 when working as an engineering technician before heading back to university.<br /><br />I owned a number of HP calculators over the years, they being my preference. The 48GX was my go-to unit for a couple of decades. But it's big and does not fit the hand well. <br /><br />So... last year I bought my first HP-41CX and was hooked. Monte Dalrymple has an upgrade mainboard that will make the HP-41 50x faster and has almost all the modules on-board and soft-pluggable. <br /><br />Three HP lovers assembled a firmware that can be uploaded to an HP-20b or HP-30b business calculator to produce the WP-34s. The 30b has a better keyboard and the process is not difficult. <br /><br />I now use the HP-41CL (Monte's labor of love) and the WP-34s on a daily basis. These are my normal tools for quick calculations and estimates. Yes, I have computers for heavy numerical modeling, but I still prefer my hand calculators for routine tasks.<br /><br />If you would like another rabbit hole, I also have Post Versalog 1460 and 1461 slide rules. One was from my university days and the other a replacement for one that got away. These are fascinating machines and mean that I could design even if we did not have access to computers.<br /><br />Heh...<br /><br />The iPhone application lives on my phone, too. ;)Ruminatorhttps://www.blogger.com/profile/02288251654036934824noreply@blogger.comtag:blogger.com,1999:blog-5710205.post-57156364999026802712018-08-27T10:51:25.712-05:002018-08-27T10:51:25.712-05:00I had one HP41cx when I was in college and I love ...I had one HP41cx when I was in college and I love it. I read your i41cx app description and I bought the app immediately. Problem is I have no idea of how to upload or download programs from and to the internet as you describe. Please help.Anonymoushttps://www.blogger.com/profile/04639344600403163839noreply@blogger.comtag:blogger.com,1999:blog-5710205.post-22739733622754776462009-12-22T16:49:57.537-06:002009-12-22T16:49:57.537-06:00It's wonderful, isn't it? Sometimes madnes...It's wonderful, isn't it? Sometimes madness is so extreme it becomes quite reasonable.<br /><br />There's an FAQ from the author with a lot more detail on features:<br /><br />http://alsoftiphone.com/i41CX/faq/<br /><br />I too assumed the developer was a guy -- but, yo know, there's no gender reference on the web site ...JGFhttps://www.blogger.com/profile/14580785981874040314noreply@blogger.comtag:blogger.com,1999:blog-5710205.post-35701772803194666962009-12-22T15:55:28.754-06:002009-12-22T15:55:28.754-06:00Gordon, thanks for leading me to the madman's ...Gordon, thanks for leading me to the madman's cave. I will urge every person whon ever enjoyed the pleasure of owning and using the HP 41 masterpiece tool to support this insane project. My HP M-code programming days are long gone, but it sure will do me good making the odd average value calculation the good ol' RPN way :-) Support this man (assume somehow this is a He...) before HP decides to squeeze the lemon for a few more bucks (they've started with the HP 12/15/16!).Anonymousnoreply@blogger.com