TI-80
The TI-80 is a graphing calculator introduced by Texas Instruments in 1995 to be used at a middle school level (grades 6 to 8). It offered advanced capabilities that had previously only been available in high-end scientific calculators to students learning pre-algebra and algebra, and was designed to be affordable for schools. The oldest Texas Instruments graphing calculator is the TI-81 (released 1990), not the TI-80.
TI-80
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Documentary summary
The TI-80 is a graphing calculator introduced by Texas Instruments in 1995 to be used at a middle school level (grades 6 to 8). It offered advanced capabilities that had previously only been available in high-end scientific calculators to students learning pre-algebra and algebra, and was designed to be affordable for schools. The oldest Texas Instruments graphing calculator is the TI-81 (released 1990), not the TI-80.
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Key facts
Key facts
• Name — TI-80 • Type — Graphing calculator • Entry — D.A.L. • Manufacturer — Texas Instruments • Introduced — 1995 • Discontinued — 1998 • Successor — TI-73 series • Processor — Proprietary (on board a Toshiba T6M53 or T6M53A ASIC) • Frequency — 980 kHz • Memory User — 7 KB of RAM • Display Size — 64×48 pixels, 16×8 characters • Precision — 13 • Supply — 2 CR2032 batteries • Weight — 106 g • Dimensions — 6.4 x
Design
Design
The TI-80 featured a 48 x 64 dot-matrix display with a 5 x 3 pixel font, the smallest screen of any TI graphing calculator. It had the slowest processor (980 kHz) of any TI graphing calculator. The first revision of the TI-80 'A' contained a proprietary Toshiba T6M53 ASIC while subsequent revisions contained a Toshiba T6M53A. Additionally, the TI-80 had the processor on board the ASIC, unlike later calculators like the TI-83, TI-83 Plus, and TI-84 Plus which had separate ASIC and processor chips in certain models. In comparison, the TI-81, released in 1990, featured a 2 MHz Zilog Z80 processor. However, the TI-80 did feature 7 KB of RAM (compared with the TI-81's 2.4 KB). The TI-80 also had more built-in functions than the TI-81 (such as list and table functions, as well as fraction and decimal conversions). Like the TI-81, the TI-80 did not feature a link port on the base model, however, unlike the TI-81, the ViewScreen variant (meant for use with TI's overhead projection units) did. The TI-80 was the only graphing calculator to use 2 CR2032 lithium batteries (instead of the standard 4 AAA batteries with a lithium backup battery).
Usage
Usage
Since its release, it was superseded by the superior TI-73 and TI-73 Explorer. The TI-80 was officially discontinued in 1998, when it was replaced by the TI-73, however, production continued until at least October 2000. As of 2021, the TI-80 remained approved for use on the SAT exam.
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These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Owens, John E. The Day the Calculator Changed: Visual Calculators in Prealgebra and Algebra. ERIC. ED.gov (Institute of Education Sciences). October 1995.
- 2.Products. T.H.E. Journal. March 1995.
- 3.http://www.datamath.org/Graphing/TI-80.htm
- 4.McCalla, Jeff. Which TI Calculator for the SAT® and Why?. BulleTIn Board Blog. Texas Instruments. April 6, 2021.
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