HP 48 Cartridge

Description:Document explaining a way to upgrade the HP 48 using a NVRAM, Non Volatile RAM (that is, it still keeps data even when there's no power) of 128K from Texas Instruments Corp to make something like a external cartridge. The great advantage of this is that these NVRAM chips can be obtained for free, as TI has a samples program.
Filename:cartridge.zip
ID:4491
Current version:2.0
Author:Jonathan B Araujo Neto
Downloaded file size:123,031 bytes
Platforms:48  
User rating:Not yet rated (you must be logged in to vote)
Primary category:Docs/Misc
Languages:ENG POR  
File date:2001/04/15 14:05:18
Source code:Not included
Download count:6,315
Version history:2001/04/15: Updated to version 2.0
2001/02/26: Added to site
Archive contents:
  Length     Date   Time    Name
 --------    ----   ----    ----
    35689  04-14-01 23:22   cartridge/hp1s.gif
    31799  04-14-01 23:22   cartridge/hp2s.gif
    20167  04-14-01 23:22   cartridge/hp3s.gif
    31746  04-14-01 23:22   cartridge/hp4s.gif
     6638  04-14-01 23:34   cartridge/hpcartridge.html
     1525  04-14-01 23:27   cartridge/style.css
 --------                   -------
   127564                   6 files
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Part of the HP Calculator Archive,
Copyright 1997-2021 Eric Rechlin.