DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-Lycée Pro.fr (TI-76.fr Design Validation Tests)
| Date of introduction: | (June 2009) | Display technology: | LCD dot matrix |
| New price: | Display size: | 8 * 16 characters | |
| Size: | 7.2" x 3.2" x 0.85" 183 x 82 x 22 mm3 |
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| Weight: | 6.0 ounces, 171 grams | Serial No: | |
| Batteries: | 4*AAA + CR1620 (35mA) | Date of manufacture: | mth 07 year 2008 |
| AC-Adapter: | Origin of manufacture: | China (P) | |
| Precision: | 14 | Integrated circuits: | ASIC: TI REF TI-738X Flash: Spansion S29AL004D Display: Toshiba T6K04 |
| Memories: | |||
| Program steps: | 27k Bytes | Courtesy of: | Joerg Woerner |
Texas
Instruments announced on their French website in May 2009 the
TI-76.fr as a new
entry-level Graphing calculator with reduced functionality to compete with the
very popular Casio Graph 25+. It is based on the TI-82
Stats.fr, a mixture of the original TI-82 STATS
and the TI-83 PLUS.
This TI-Lycée Pro.fr calculator is the Prototype of the TI-76.fr
used for Design Validation Tests, Lycée being the French translation of High School. In North America the TI-73 was developed
for the same target audience already in 1998 and is in 2020 as TI-73
Explorer still available.
Dismantling
this TI-Lycée Pro.fr Prototype manufactured in July 2008 reveals no big surprises. The printed
circuit board (PCB) is identical with the TI-82 Stats.fr and contains just three
integrated circuits:
| • ASIC • Flash ROM • Display Driver |
The
picture on the right gives an enhanced view of the ASIC "TI-REF TI-738X"
that clocks the Z80
microprocessor with 6 MHz and incorporates the 32k Bytes RAM and some supporting
logic. Learn more about the
Hardware Architecture of TI’s Graphing Calculators. The ASIC was probably manufactured by Toshiba and recalls us the TI-83
Plus Silver Edition with the "TI-REF 83PL2M/TA2" ASIC and the early
TI-84 Plus with its "TI-REF 83PLUSB/TA2" ASIC.
The
TI-Lycée Pro.fr is based - like most Graphing calculators introduced after the
TI-83 -
on Flash technology, we located in this TI-Lycée Pro.fr a Spansion S29AL004D device with
512k Bytes capacity for programs and data.
The
driver circuit of the LC-Display was traditionally manufactured by Toshiba for
Texas Instruments' graphing calculators. This TI-Lycée Pro.fr manufactured in
July 2008 still sports a Toshiba T6K04 driver, while we discovered in the TI-76.fr manufactured in 2009
with the Novatek NT7564H a one-by-one replacement. It is just a bare chip
mounted on a flexible piece of circuit board attached between the display and
the main PCB.
ROM-Versions:
1.11fr7
You can check the ROM version of your
TI-Lycée Pro.fr using the following key sequence and reading the number on your screen:
