DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-83 Plus (France)
| Date of introduction: | June 2007 | Display technology: | LCD dot matrix |
| New price: | EUR 104.99 | Display size: | 8 * 16 characters |
| Size: | 7.2" x 3.2" x 0.80" 182 x 81 x 20 mm3 |
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| Weight: | 6.4 ounces, 182 grams | Serial No: | 2844066751 |
| Batteries: | 4*AAA + CR1620 (35mA) | Date of manufacture: | mth 04 year 2007 (K) |
| AC-Adapter: | Origin of manufacture: | China (S) | |
| Precision: | 14 | Integrated circuits: | ASIC: TI-REF TI-738X (220C080FG102) Flash: S29AL004D70 Display: NT7564H |
| Memories: | |||
| Program steps: | 24k Bytes, 160k Bytes Flash ROM | Courtesy of: | Joerg Woerner |
Texas
Instruments introduced the original TI-83 Plus
already in 1999 as the successor of the TI-83. It was an
immediate success on the market and it was for a long time frame
the best selling graphing calculator in the US
and Canada. Texas Instruments reported more than 2,000,000 shipped units in 2000!
In the fast moving world of electronics and manufacturing technology it was for
sure that we will see a lot of improvements of the TI-83 Plus till its
discontinuation. In 2008 the TI-83 Plus is still available in the shelves of the
US and European stores and we recently acquired a whole bunch of them:
A light blue TI-83
Plus manufactured in April 2007 by
Nam
Tai Electronics, Inc. in China
for the US retailer Target.
for the French market.
for the French market and its pink TI-83 Plus
sibling manufactured in July 2007.
Comparing
these 2006/2007 manufactured calculators with the original design reveals a lot
of internal differences.
The original design of the TI-83 Plus made use of 5 main Integrated Circuits:
Zilog Z84C00 microprocessor
TI REF 9815455 ASIC
512k Bytes Flash ROM
32k Bytes Static RAM
Toshiba T6A04: Single-chip 64*120 pixel display driver
The new designed printed circuit board (PCB) needs just 3 Integrated Circuits:
ASIC: Z 80 microprocessor, RAM and
supporting logic
There are minor differences between the components located in the different production batches:
| Manufacturer | Date code | ASIC | Flash ROM | Display Driver |
| Inventec | August 2006 | TI-738X | Spansion S29AL004 | Toshiba T6K04 |
| Inventec | April 2007 | TI-738X | Spansion S29AL004 | Novatek NT7564H |
| Nam Tai | April 2007 | Chip-On-Board | Macronix MX29LV400 | Novatek NT7564H |
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 TIs 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
driver circuit of the LC-Display was traditionally manufactured by Toshiba for
Texas Instruments' graphing calculators. This TI-83 Plus manufactured in 2007
shows 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.
A serial port of the calculators allows the connection to the
Calculator-Based Laboratory system CBL, its successor CBL
2, the Calculator-Based Ranger CBR and its successor CBR
2.
Texas Instruments France introduced in 2008 the TI-83
Plus.fr with not only translated menus but even keys and discontinued the
TI-83 Plus.
ROM-Versions:
1.19 (January 16, 2006, actual in February 2008)
You can check the ROM version of your TI-83
Plus using the following key sequence and reading the number on your screen:
