166 lines
7.5 KiB
HTML
166 lines
7.5 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Calculators</title>
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<meta property="og:title" content="Calculators">
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<meta property="og:description" content="C a l c u l a t o r s">
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<script lang="javascript" src="../res/js/themeswap.js"></script>
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</head>
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<body>
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<div class="page">
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<div class="header">
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<nav>
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<div>
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<a href="../me/">about</a> |
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<a href="../pics/">pics</a> |
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<a href="../projects/">projects</a> |
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<a href="../cgit">repos</a> |
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<a href="../interblag/">weblog</a> |
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calculators
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</div>
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</nav>
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<div class="pagetree">
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<div style="float: left;">Design based on <a href="https://finalrewind.org/">finalrewind.org</a></div>
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<span class="title">
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<a href="/">~floppydisk</a> / calculators
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</span>
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<div style="float: right;"><a onClick="javascript:toggleTheme()">dark / light mode</a></div>
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</div>
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</div> <!-- header -->
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<div id="pagebody">
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<div id="content">
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<h1>CASIO fx-CG50</h1>
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<p>TBD</p>
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<h2>Pictures</h2>
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<p>Click images to view full size</p>
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<a href="/res/img/calculators/casio-fx-cg50/1s.jpeg"><img src="/res/img/calculators/casio-fx-cg50/1s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-cg50/2s.jpeg"><img src="/res/img/calculators/casio-fx-cg50/2s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-cg50/3s.jpeg"><img src="/res/img/calculators/casio-fx-cg50/3s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-cg50/4s.jpeg"><img src="/res/img/calculators/casio-fx-cg50/4s.jpeg" width="15%"></a>
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<h1>CASIO fx-120 (1977-78)</h1>
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<p>TBD</p>
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<h2>Specifications</h2>
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<table class="skami">
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<tr>
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<td><b>Size</b></td>
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<td>8.4cm x 16.2cm x 2.4cm</td>
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</tr>
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<tr>
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<td><b>Weight (w/ battery)</b></td>
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<td>209g</td>
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</tr>
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<tr>
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<td><b>Type</b></td>
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<td>Scientific</td>
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</tr>
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<tr>
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<td><b>CPU</b></td>
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<td>Hitachi HD38111A</td>
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</tr>
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<tr>
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<td><b>Registers</b></td>
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<td>2 standard<br>1 constant<br>4 bracket<br>1 memory</td>
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</tr>
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<tr>
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<td><b>Features</b></td>
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<td>%, +/-, RV, F, Sci, a<sup>b</sup>⁄<sub>c</sub>, Sqr, x<sup>2</sup>, pi, <sup>1</sup>⁄<sub>x</sub>, trig,<br>hyp, DMS-DD, log, y<sup>x</sup>, SD, nCr, P-R, n!</sup></td>
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</tr>
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<tr>
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<td><b>Display</b></td>
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<td>12-digit VFD (NEC LD8197A)</td>
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</tr>
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</table>
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<h2>Pictures</h2>
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<p>Click images to view full size</p>
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<a href="/res/img/calculators/casio-fx-120/1s.jpeg"><img src="/res/img/calculators/casio-fx-120/1s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-120/2s.jpeg"><img src="/res/img/calculators/casio-fx-120/2s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-120/3s.jpeg"><img src="/res/img/calculators/casio-fx-120/3s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-120/4s.jpeg"><img src="/res/img/calculators/casio-fx-120/4s.jpeg" width="15%"></a>
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<h1>CASIO fx-82 (1982-85)</h1>
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<p>TBD</p>
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<h2>Pictures</h2>
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<p>Click images to view full size</p>
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<a href="/res/img/calculators/casio-fx-82/1s.jpeg"><img src="/res/img/calculators/casio-fx-82/1s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-82/2s.jpeg"><img src="/res/img/calculators/casio-fx-82/2s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-82/3s.jpeg"><img src="/res/img/calculators/casio-fx-82/3s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/casio-fx-82/4s.jpeg"><img src="/res/img/calculators/casio-fx-82/4s.jpeg" width="15%"></a>
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<h1>Texas Instruments TI-30 (1976-90)</h1>
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<p>TBD</p>
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<h2>Pictures</h2>
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<p>Click images to view full size</p>
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<a href="/res/img/calculators/ti-30/1s.jpeg"><img src="/res/img/calculators/ti-30/1s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/ti-30/2s.jpeg"><img src="/res/img/calculators/ti-30/2s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/ti-30/3s.jpeg"><img src="/res/img/calculators/ti-30/3s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/ti-30/4s.jpeg"><img src="/res/img/calculators/ti-30/4s.jpeg" width="15%"></a>
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<h1>Texet 880 Executive (1977-78)</h1>
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<p>The calculator measures 74.2mm x 135mm x 22.2mm. It weighs 86g without the battery installed, which is a 9v PP3-type battery. Rather than the usual press-stud type holder, the housing has two metal slide clips. There is also what I assume to be a sponge at one end which is supposed to aid in holding the battery in, however it appears to have gone completely hard and I will most likely replace it in the future. There's small adaptor hole at the top, of which the input isn't specified (though it's generally agreed that it's 4.5v centre-positive).</p>
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<p>The case is black & silvery colored with a thin brushed metallic front panel. The eight-digit bubble display has an absolutely <i>terrible</i> viewing angle, which means you either have to be holding it under your coat or against your face to read it!</p>
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The keypad is particularly strange in the way that it has 3 cancel buttons, <pre>[CE]</pre>, <pre>[C]</pre> and <pre>[CA]</pre>, while the <pre>[CS]</pre> button is a Clear Sign button, <i>not</i> another cancel! The keys themselves are particularly stiff and you really have to push them to get them to register. Many 880s suffered something referred to as the "pseudo fixed decimal bug" where, if you typed in <pre>1 + 1.00 = </pre>, it would display <pre>2.00</pre> instead of the expected <pre>2</pre>
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<h2>Specifications</h2>
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<table class="skami">
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<tr>
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<td><b>Size</b></td>
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<td>7.4cm x 13.5cm x 2.2cm</td>
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</tr>
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<tr>
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<td><b>Weight (w/o battery)</b></td>
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<td>86</td>
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</tr>
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<tr>
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<td><b>Type</b></td>
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<td>Arithmetic</td>
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</tr>
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<tr>
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<td><b>Logic</b></td>
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<td>Algebraic</td>
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</tr>
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<tr>
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<td><b>Power Source</b></td>
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<td>PP3 9v</td>
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</tr>
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<tr>
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<td><b>Display</b></td>
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<td>8-digit LED</td>
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</tr>
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</table>
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<h2>Pictures</h2>
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<p>Click images to view full size</p>
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<a href="/res/img/calculators/texet-880/1s.jpeg"><img src="/res/img/calculators/texet-880/1s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/texet-880/2s.jpeg"><img src="/res/img/calculators/texet-880/2s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/texet-880/3s.jpeg"><img src="/res/img/calculators/texet-880/3s.jpeg" width="15%"></a>
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<a href="/res/img/calculators/texet-880/4s.jpeg"><img src="/res/img/calculators/texet-880/4s.jpeg" width="15%"></a>
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<!--<h2>TL;DR</h2>
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<ul>
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<li>Sponge in battery compartment has gone hard and should probably be replaced</li>
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<li>Power input is unlabelled but is widely agreed to be 4.5v centre-positive</li>
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<lI>Uses an 8-digit bubble display with a terrible viewing angle</li>
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<li>Has 3 cancel buttons (<pre>[CE]</pre>, <pre>[C]</pre> and <pre>[CA]</pre>)</li>
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<li>Has particularly stiff keys</li>
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<li>Many suffered from the "pseudo fixed decimal bug", however mine does not</li>
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</ul>-->
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</div> <!-- content -->
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<div id="footer" class="pagefooter">
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<!-- Created <span class="date">Sat 26 Mar 2011 03:11:41 PM CET</span> -->
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</div> <!-- footer -->
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</div> <!-- pagebody -->
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</div> <!-- page -->
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</body>
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</html>
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