added project: Teltax

nbs/10_andri.ipynb

@@ -6,7 +6,7 @@
    "source": [
     "# Andri Krämer\n",
     "\n",
-    "> Explore the projects I have realized over the years"
+    "> Discover the projects I've brought to life over the years! Some may be a bit dated, but I found it fascinating to journey back in time and revisit the challenges that felt essential to tackle back then."
    ]
   },
   {

nbs/index.ipynb

@@ -25,8 +25,9 @@
     "When I was a kid, whenever someone asked what I wanted to be when I grew up, I always said 'an inventor.' Starting today, October 23, 2024, I'll be documenting an old project every day. So stay tuned and follow me as the website grows!\n",
     "\n",
     "\n",
-    "* 2024-10-23:  [PublicSecrets, 1997 - 2007](/10_andri.ipynb#publicsecrets) was a mix of social networking and productivity platform. \n",
+    "* 2024-10-25:  [Teltax, 1995 - 1999](/10_andri.ipynb#teltax) Dial-In modem costs calculator and splitter\n",
     "* 2024-10-24:  [Patient, 1991 - 1994](/10_andri.ipynb#patient) was the first program I wrote to be used productively: A patient management software for my mom.\n",
+    "* 2024-10-23:  [PublicSecrets, 1997 - 2007](/10_andri.ipynb#publicsecrets) was a mix of social networking and productivity platform. \n",
     "<br><br><br><br>"
    ]
   },

nbs/projects.json

@@ -7,6 +7,13 @@
         "description": "My first software that was used productively was called 'Patient'. I wrote it as a teenager in Turbo Pascal for my mother, who, in addition to being a housewife, also worked part-time as a self-employed physiotherapist. The DOS application was multicolored and could be operated with a mouse. We had an Intel 80386 DX 20 MHz computer with a 1 GB hard drive and a simple dot-matrix printer. With my patient management software, one could not only schedule appointments and do the accounting, but also directly fill out the yellow forms that had to be submitted to the disability insurance (IV) for billing. At the time, my mother was probably the only physiotherapist who sent forms to the insurance not handwritten but neatly filled out by a printer 😀. \n\n ![Patient menu screenshot](patient1.jpg) \n\nThe completely exaggerated title 'Physikalisch-Therapeutisches Institut Ruth Krämer & Co.' was, of course, meant as a family insider joke.  \n\n ![Patient detail screenshot](patient2.jpg)"
 
     },
+    {
+        "title": "Teltax",
+        "year_start": 1995,
+        "year_end": 1999,
+        "quote": "Dial-In modem costs calculator and splitter",
+        "description": "To access the internet back then, you had to dial in via a modem over the phone line. There was a basic charge for establishing the connection and a per-minute fee with three different time-based pricing levels. Internet costs could quickly become very high, and if you lived in a shared apartment or worked remotely for an employer, you needed to know for each 'internet session' when it happened, how long it lasted, and who would be responsible for paying at the end of the month.\n\nThat's exactly why I wrote Teltax. It was activated each time a modem connection ended, allowing you to specify whose account the costs should be charged to. The details were read from the technical log of the Win95 modem driver (e.g., `c:\\win95\\ModemLog_Zeus 336E External 33600 Fax Modem.txt`). Then, the costs were calculated based on the three different price levels and written into a log file. At the end of the billing period, a total cost per user was calculated. Additionally, the data volume was analyzed, and the cost per megabyte was calculated. Since charges were based on time rather than data volume back then, the goal was, of course, to keep the cost per megabyte as low as possible by truly using the connection and not keeping it open for too long.\n\n ![Teltax summary screenshot](teltax1.jpg)"
+    },
     {
         "title": "PublicSecrets",
         "year_start": 1997,