Differences
This shows you the differences between two versions of the page.
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ti-58 [2023/01/04 15:03] clodoveu |
ti-58 [2023/01/14 16:13] (current) clodoveu |
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| - | ===== <del>Mechanical</del> Eletronic calculators: TI-58 ===== | + | ===== <del>Mechanical</del> Electronic calculators: TI-58 ===== |
| * [[etc|Back to Offline Hours]] | * [[etc|Back to Offline Hours]] | ||
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| Further on, maybe in the late 1990s, I tried to bring it back to life, by soldering the battery to the PC board directly. It turned on, but the battery was useless, it wasn't easy to get a new one, and I gave up. | Further on, maybe in the late 1990s, I tried to bring it back to life, by soldering the battery to the PC board directly. It turned on, but the battery was useless, it wasn't easy to get a new one, and I gave up. | ||
| - | Now I retrieved it from the drawer, went online for reference material, and tried again. The old, 43-year-old battery pack was replaced by an old-fashioned pack of 3 AAA NiMH batteries ($10), 3.6V, used in baby monitors, cordless phones, toys and the like. I revised the soldering of wires in the place the metal contacts used to be, and connected in the NiMH pack. It worked. | + | In January 2023 I retrieved it from the drawer, went online for reference material, and tried again. The old, 43-year-old battery pack was replaced by an old-fashioned pack of 3 AAA NiMH batteries ($10), 3.6V, used in baby monitors, cordless phones, toys and the like. I revised the soldering of wires in the place the metal contacts used to be, and connected in the NiMH pack. It worked. |
| I then found online (https://www.thingiverse.com/thing:4368165) and printed a cover for the battery pack, got some self-adhesive silicone feet, and replaced the AC adapter's plug with a similar connector, saved from a 40mm fan. | I then found online (https://www.thingiverse.com/thing:4368165) and printed a cover for the battery pack, got some self-adhesive silicone feet, and replaced the AC adapter's plug with a similar connector, saved from a 40mm fan. | ||
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| Ad with price annotations, from 1977 | Ad with price annotations, from 1977 | ||
| - | {{ https://www.dropbox.com/s/mxhb3y1peykh6n2/95524%20Leaflet%20folder%20ad%20with%20price%20annotation.pdf | Ad}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/TI-58/TI-57_58_59_ad.png?500 | Ad}} |
| - | After cleaning | + | After repair |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/Contex-model-B/contex-1.jpg?500 | Contex model B}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/TI-58/TI-58_1.jpg?500 | TI-58}} |
| - | Serial number | + | 3D-printed back cover |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/Contex-model-B/contex-2.jpg?500 | Contex model B}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/TI-58/TI-58_back.jpg?500 | Back}} |
| - | Inside view | + | ROM Module |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/Contex-model-B/contex-3.png?500 | Contex model B}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/TI-58/TI-58_memory_module.jpg?500 | Memory Module}} |
| - | Bottom view -- notice the five blades for the keys in each column, arranged as a fan | + | Display -- the LED digits are quite small, and the machine has a row of lenses to increase their size |
| - | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/Contex-model-B/contex-4.png?500 | Contex model B}} | + | {{ http://www.dcc.ufmg.br/~clodoveu/files/Images/TI-58//TI-58_display.jpg?500 | Display}} |
| **More about this machine** | **More about this machine** | ||
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| [[https://www.rskey.org/CMS/index.php/the-library/12|Texas Instruments Reference Manuals: operations, programming, technical, schematics and much more, including the programming sheets that came with the machines]] | [[https://www.rskey.org/CMS/index.php/the-library/12|Texas Instruments Reference Manuals: operations, programming, technical, schematics and much more, including the programming sheets that came with the machines]] | ||
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| + | [[http://ti58c.phweb.me/site/articles.php?langue=EN&smenu=The%20programmable#entete| The full range of Texas programmable calculators]] | ||
| + | |||
| + | [[http://ti58c.phweb.me/site/articles.php?langue=EN&smenu=Videos|A list of videos on Texas calculators]] | ||
