354 Lotus blogs updated hourly. Who will post next? Home | Downloads | Events | Pods | Blogs | Search | myPL | About 
 
Latest 7 Posts
Code snippet – jQuery
Sat, Mar 15th 2014 325
World Wide Web turning 25 years this week
Fri, Mar 14th 2014 158
Connect 2014 – Day 0 (Saturday)
Mon, Jan 27th 2014 263
Connect 2014 – Chilly evenings in Orlando
Fri, Jan 24th 2014 295
Connect 2014 – More about the sessions
Wed, Jan 22nd 2014 325
Connect 2014 – 3 days left until I leave for Orlando
Wed, Jan 22nd 2014 306
Connect 2014 – My preliminary schedule
Wed, Jan 15th 2014 158
Top 10
Pool party or no pool party, that is the question – or is it?
Mon, Jan 13th 2014 666
Export Notes view to Excel – with multi-value fields
Fri, Apr 5th 2013 502
Connect 2014 – More about the sessions
Wed, Jan 22nd 2014 325
Code snippet – jQuery
Sat, Mar 15th 2014 325
Create and update Calendar reminders from Notes document
Thu, Aug 11th 2011 310
Free Tool: Analyze ACL in Notes Application/Database
Tue, Nov 15th 2011 310
Connect 2014 – 3 days left until I leave for Orlando
Wed, Jan 22nd 2014 306
Connect 2014 – Chilly evenings in Orlando
Fri, Jan 24th 2014 295
Review: Samsung Galaxy S3
Sun, Jun 24th 2012 268
Connect 2014 – Day 0 (Saturday)
Mon, Jan 27th 2014 263


Coolest Calculator Ever - and now you can have it!
Karl-Henry Martinsson    

HP-48SX I have been using HP calculators since the mid-70's, when my cousin (who worked for Hewlett-Packard in Sweden) brought an HP-21 to us. When I was in 8th grade and we finally were allowed to use calculators during math class, I purchased the HP-15C, a programmable scientific calculator. In 1987, when I was in high school, the HP-28C was released, and I got it as soon as it came out. The next year I upgraded to the improved HP-28S (32kB instead of 2kB and a 1 MHz processor instead of 640 kHz). Both were clamshell designs. I also got a HP 82240B infrared printer, which used thermal paper.

In April 1990 I was getting the HP-48SX as soon as it came out. I could use the same infrared printer I already had, and I also got an expansion memory card (128 kB, I believe). I used this calculator for many years, and still have it, even if it is not working fully, due to a faulty on/off switch (which seems to be a known issue on these old units). My next project will be to open my calculator and fix this problem...

The HP-48SX had a serial port, built-in Kermit file transfer and infrared communications. There was a large set of programs and utilities available on several bulletin board systems (BBS) and later on the Internet. Most notable were Joe Horn's Goodies disks. Many programs can be found at hpcalc.org.

Back in the late 1990's I found some emulators that let me run a HP-48 on my Windows computer. It required a ROM image from the original calculator, which I of course still had. Then in 2000, HP released the ROM images for free downloads. Very cool!

The emulators have evolved, and now everyone can get a HP48SX, or it's successors 48G and 48GX, on their desktop. It is actually very simple. You just need three small downloads to do this:

* The free Emu48 emulator by Christoph Gießelink

* A HP-48SX ROM image

* A photo realistic skin, for example this one by Arno Kuhl or the one to the right by Growik

Simply unpack the Emu48 installer and run it. Put the ROM image in the Emu48 directory and use the convert.exe program to convert the ROM image. Then copy the files for the skin into the same directory. Launch the program, and you have a really cool calculator. Everything works, including programming! More skins, as well as other programs, can be found at hpcalc.org.

HP calculators, with the exception of the business models (designated by a B in the model name) use Reverse Polish Notation (RPN). It is a faster and better way to calculate, especially more complex computations, but can be confusing to non-engineers/technical users. I highly recommend to learn this, though.

So go get this calculator for your computer and start playing!



---------------------
http://www.bleedyellow.com/blogs/texasswede/entry/coolest_calculator_ever
Mar 25, 2011
45 hits



Recent Blog Posts
325


Code snippet – jQuery
Sat, Mar 15th 2014 11:43a   Karl-Henry Martinsson
This morning I was working on a web application, and I came up with a pretty neat and simple little solution. So I just wanted to share it, in case anyone else need something similar. I have a webpage with an HTML form. Each input tag has an attribute called notesfield, matching the name of the field in Notes where the value is stored: First Name Initial Last Name Then I created a simple function that will call an agent on the Domino server, which will return all th [read] Keywords: agent domino notes ajax application database server
158


World Wide Web turning 25 years this week
Fri, Mar 14th 2014 3:02p   Karl-Henry Martinsson
In some articles it is claimed that Internet turns 25 years old this week, which of course is not true. But the World Wide Web is. It was on March 12, 1989 that Tim Berners-Lee wrote a proposal for a hypertext system that would become what we call “the web”. In 1991 the first webpage was created and published at CERN. Since then the web has exploded. I first got in touch with web pages and HTML in 1994, and in 1995 I had my own little server running on my work computer. I don’t [read] Keywords: lotus notes ajax development email google instant messaging javascript network server wiki wireless
263


Connect 2014 – Day 0 (Saturday)
Mon, Jan 27th 2014 6:03a   Karl-Henry Martinsson
After not hearing the alarm this morning and therefore missing my original flight from DFW to MCO (Orlando International), I got booked on the next flight. I was in the air just a couple of hours late, and arrived at Dolphin in time for BALD at Big River on the Boardwalk. Had a great time connecting with friends after a year of not seeing many of them. Of course I got a hug from Mat Newman, meaning that IBM Connect started for real. Låter I was going to hit ESPN, but due to changes there, [read] Keywords: ibm
295


Connect 2014 – Chilly evenings in Orlando
Fri, Jan 24th 2014 9:42a   Karl-Henry Martinsson
Countdown to Connect 2014 It looks like the evenings next week week will be a little bit chilly. So it might be a good idea to bring something warm to wear for the Tuesday party at Disney’s Hollywood Studios. Hope to see you in Orlando! [read] Keywords: collaboration ibm
325


Connect 2014 – More about the sessions
Wed, Jan 22nd 2014 12:02p   Karl-Henry Martinsson
Countdown to Connect 2014 The sessions at Lotusphere/Connect are focusing more and more on XPages each year. I don’t think there are really any sessions about classic Notes development this year. Currently I am not able to use XPages at work, due to the client environment we run (Lotus Notes 8.5.2 Basic in Citrix), but the sessions are still great (see video below) and I am learning new things every year. Hopefully we will soon switch the client to IBM Notes 9.0 so I can use all th [read] Keywords: admin domino ibm lotus lotusphere notes xpages citrix development network office
306


Connect 2014 – 3 days left until I leave for Orlando
Wed, Jan 22nd 2014 9:42a   Karl-Henry Martinsson
Wednesday morning. In exactly 3 days I will arrive in Orlando, after a short flight from Dallas. My preparations for the trip are almost done, I just have to charge up some batteries for cameras, dig out some spare USB cables and purchase a few last-minute items. So what is it that is so exciting about Lotusphere (now Connect)? How do you explain it to someone who never been there? In the past, several members of the community have brought their significant other to Orlando, at least for a few [read] Keywords: domino lotus lotusphere notes community exchange exchange office wiki
158


Connect 2014 – My preliminary schedule
Wed, Jan 15th 2014 8:08a   Karl-Henry Martinsson
I have now created my preliminary schedule for Connect 2014. There are two only sessions that collide (on Tuesday), and I have not been able to find any repeats for them. That is how often has been at Lotusphere, but I would say that in the later years, the collisions have been fewer and fewer, thanks to more repeats and (perhaps) smarter scheduling. Monday afternoon is when I have set time aside to visit the showcase and the labs. I also have a little bit of time after lunch Wednesday. As [read] Keywords: ibm lotusphere




666


Pool party or no pool party, that is the question – or is it?
Mon, Jan 13th 2014 10:11a   Karl-Henry Martinsson
With the name change to Connect in 2013, the welcome reception/pool party changed somewhat. Instead of taking place at the pools/beach area between Swan and Dolphin, it started inside in the showcase area (Atlantic hall), and then moved outside for food, drinks and entertainment. From what it looks like on the Connect 2014 website, and based on Chris Miller’s blog post, it sounds like the traditional poolside party is no more. The Connect website also only mention snacks and beverages. [read] Keywords: atlantic ibm lotusphere
136


Connect 2014 – Survive the week!
Mon, Jan 6th 2014 7:02a   Karl-Henry Martinsson
Countdown to Connect 2014 In exactly 3 weeks, thousands of us will be sitting in the Northern Hemisphere ballroom at the Dolphin hotel in Orlando. We have already been involved in some social activities on Saturday with soccer, BALD and ESPN, followed by a full day of jumpstart and master class sessions on Sunday. Sunday evening there was the big welcome reception on the beach between Swan and Dolphin. Some of us may have continued to Kimonos afterwards, or perhaps to Jelly Rolls dueling [read] Keywords: collaboration ibm lotusphere apple office
199


Connect 2014 – Plan your schedule!
Fri, Jan 3rd 2014 7:22p   Karl-Henry Martinsson
Countdown to Connect 2014 We already talked about how to prepare for Connect by getting everything together, like batteries, chargers, comfortable shoes and questions for the IBM developers. But you also should plan ahead for the sessions. You will spend hours listening to experts from IBM as well as from business partners from all around the world. There are always several sessions at the same time, sometimes making it hard to choose. There are also the longer Show n’ Tell sessions, s [read] Keywords: collaboration ibm lotusphere notes application archive database development mobile planetlotus planetlotus.org




Created and Maintained by Yancy Lent - About - Blog Submission - Suggestions - Change Log - Blog Widget - Advertising - Mobile Edition