DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-92 Plus
| Date of introduction: | April 22, 1999 | Display technology: | LCD dot matrix |
| New price: | ($179.99 in 2003) | Display size: | 12 lines by 40 char 128 * 240 pixels |
| Size: | 4.7" x 8.2" x 1.2" | ||
| Weight: | 17.4 ounces | Serial No: | V0702516 |
| Batteries: | 4*AA + CR2032 (35mA) | Date of manufacture: | mth 10 year 1999 |
| AC-Adapter: | Origin of manufacture: | Taiwan | |
| Precision: | 14 | Integrated circuits: | CPU: MC68EC000 ASIC: TI-REF 200C040 Flash: LH28F160 RAM: 2*TC551001 Display: 3*T6B07, 2*T6B08 |
| Memories: | |||
| Program steps: | 188k Bytes, 702k Bytes Flash-ROM | Courtesy of: | Viktor T.Toth |
This
TI-92 Plus introduced together with the pocket-sized TI-89
was the third upgrade of the original TI-92.
In a first step TI introduced with the TI-92 E module a language selectable Operating System and an additional 128k User memory.
In a second step the TI-92 Plus module replaced the pre-programmed Operating System with downloadable software.
With the TI-92 Plus engineers of Texas Instruments squeezed
the former modules onto the main printed circuit board (PCB) of the calculator
and made the former Expansion Port obsolete.
The printed circuit board
(PCB) of the TI-92 Plus looks similar to the original TI-92 PCB but we notice
some changes:
| Function | TI-92 | TI-92 Plus | Comment |
| CPU | SC414181 | MC68EC000 + ASIC 200C040 |
Application Specific CPU replaced by Standard CPU and ASIC. |
| ROM | LH5388 | LH28F160 | 1M*8 ROM replaced by 2M*8 Flash-ROM |
| RAM | TC551001 | 2*SRM20V100 | 128k*8 RAM doubled to 256k*8 |
| Column Driver | 3*T6A39 | 3*T6B07 | Replacement of obsolete parts |
| ROW Driver | 2*T6A40 | 3*T6B08 | Replacement of obsolete parts |
| Expansion Port | available | not available |
A serial port of the calculators allows the connection to the Calculator-Based Laboratory system CBL, its successor CBL 2 and the Calculator-Based Ranger CBR. Texas Instruments announced June 2002 an optional full-sized QWERTY Keyboard for a more convenient entry of notes into the handhelds but it even matched the TI-92 Plus.
In addition to the handheld Graphing calculators features the TI-92 a direct connection port to either a ViewScreen panel or the TI-Presenter.
Within three years the TI-92 Plus was replaced with the Voyage
200 integrating identical hardware (beside a doubled Flash-ROM capacity)
into a much smaller housing. This gave the original TI-92 a lifetime of about 6
years but its genes will last much longer.
Hardware-Versions:
The original hardware of the TI-92 Plus is referred to as
hardware version 2 and contains a 12 MHz processor. A regular TI-92 upgraded
with the TI-92 Plus module is referred to as hardware version 1 and will not
allow all applications, e.g. the clock functionality. You can check the HW version of your
TI-92 Plus using
the following key sequence and reading the number on your screen:
[F1] [A]
ROM-Versions:
2.03
2.04 (June 2000)
2.05 (July 5, 2000)
2.06
2.07
2.08 (August 2002, recalled and re-released February 20, 2003)
2.09 (May 20, 2003, actual in February 2008)
ROM-Versions (Plus module):
1.0
(May 21, 1998)
1.01 (Aug 5, 1998)
You can check the ROM version of your TI-92 Plus using the following key
sequence and reading the number on your screen:
[F1] [A]
Information provided by ticalc.org.
Exam acceptance:
Since the TI-92 Series and Voyage 200
feature a QWERTY keyboard they are not allowed on ACT,
SAT, PSAT
and AP exams.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.