yann64andClaude Opus 5.5
cf3a03350c
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
22 lines
1.5 KiB
HTML
22 lines
1.5 KiB
HTML
{
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"title": "FIRST TEXAS INSTRUMENTS TI-57 SALES",
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"date": "1977-07-01",
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"years": [
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"1977"
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],
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"topics": [
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"Hardware"
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],
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"params": {
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"when": "JULY 1977",
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"image": "/media/history/images/texas_ti57_system_1.jpg",
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"oc_id": 29,
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"source": {
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"url": "https://web.archive.org/web/20220322023408/http://www.old-computers.com/history/detail.asp?n=29",
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"date": "2022-03-22"
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}
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}
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}
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<img src="/media/history/images/texas_ti57_system_1.jpg"/> <br/><br/> <p>The <b>TI-57</b>, <b>TI-58</b> and <b>TI-59</b> programmable calculators were revealed to the public in May of 1977. Sales of the TI-57 started in July, and in August for the TI-58 and 59 (as we will see next month). <br/><br/> It will become the most sold programmable calculator in the world. Though inexpensive ($80), the TI-57 is a technological prowess. It is the only programmable calculator with all functions centralized in a single integrated circuit. <br/><br/> A low consumption MOS/LSI circuit does the work of 30,000 transistors. It features a 4 bits microprocessor, 50 program steps in RAM and a ROM command software. A new coding method allows to save in one programming step up to three keys entries (as in : Inv-2nd-cos). <br/><br/> All these characteristics are largely inspired by Hewlett Packard's latest products, HP being Texas Instrument's largest competitor in this area. <br/><br/> The TI-57 will also be sold through <b>Radio Shack</b> under the name of <b>EC-4000</b>.<br/> TI-57 production will end in 1982. <br/><br/></p><img src="/media/history/images/texas_ti57_ic_1.jpg"/>
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