Calculators
Model: TI-1225
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info: custom model manufactured for True Value Harware Store
Model: TI-1250
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMC0952
Info:
Model: TI-1255
Battery: 9 volt
Adapter: AC9130
Year: 1977
Chip: TMC0972
Info: property Marie Collas
Model: TI-1260
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMC0954
Info:
Model: TI-1265
Battery: 9 volt
Adapter: AC9180
Year: 1977
Chip: TMS1043
Info:
Model: TI-1270
Battery: 9 volt
Adapter:
Year: 1976
Chip: TMC0974
Info:
Model: TI-1270 V0
Battery: 9 volt
Adapter: AC9180
Year: 1977
Chip: TMS0974 (7701) Year 77 Week 01 / ZA0355
Info: Discovery of a very early version of TI-1270 built in Rieti (RCI2177 Week 21 Year 1977), you can see the writing 1270 printed on the metal mask under the display.
Model: TI-1400
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info:
Model: TI-1450
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info:
Model: TI-15 explorer lcd
Battery: CR2025
Adapter:
Year: 2007
Chip: China
Info:
Model: TI-15 lcd
Battery: 2 x AA alkaline
Adapter:
Year: 1982
Chip: Taiwan
Info
Model: TI-15
Battery: 9 volt
Adapter:
Year: 1981
Chip: TMC0981
Info: EURO line
Model: TI-15 overhead
Battery:
Adapter:
Year:
Chip: made in China
Info: The California based company Stokes Publishing Company, Inc. distributes under the label "The Educator®"
calculators optimized for teaching purposes. William T. Stokes filed already July 30, 1991 the US Patent Application U.S. Pat. No. 5,035,502
with the title "Transparent calculator for overhead projection".
Model: TI-150
Battery: 4 x AA ni-cd internal
Adapter: AC9150
Year: 1975
Chip: TMS0852
Info: This calculator tastes different, it was a dear friend Joerg of datamath.org who gave it to me.
Very Rare
Model: TI-1500
Battery: 2 x AA ni-cd
Adapter: AC9140, AC9900/C
Year: 1974
Chip: TMS0803
Info:
Model: TI-1505
Battery: LR1130
Adapter:
Year: 1985
Chip:
Info: LCD 1985 - 1990 Made in Taiwan
Model: TI-1600
Battery: special 1,2 ni-cd
Adapter: AC9131
Year: 1977
Chip: TMS1043
Info:
Model: TI-1606
Battery: solar
Adapter:
Year: 1985
Chip:
Info:
Model: TI-1626
Battery: 2 x AA
Adapter:
Year: 1985
Chip:
Info: The TI-1626 could be called one of the smallest, thinnest and lightest calculators manufactured by Texas Instruments.
Model: TI-1650
Battery: special 1,2 ni-cd
Adapter: AC9131
Year: 1976
Chip: TMS1043
Info:
Model: TI-1680
Battery: special 1,2 ni-cd
Adapter: AC9131,AC9132
Year: 1978
Chip: TMC1981,TMC0999
Info:
Model: TI-1700
Battery: 3 x LR54
Adapter:
Year: 1978
Chip: T3551 or T3708toshiba
Info: first TI-LCD - yellow LCD
Model: TI-1706
Battery: solar
Adapter: solar
Year: 1983
Chip: Sharp LI3129
Info:
Model: TI-1706 II
Battery: 2 x solar
Adapter:
Year: 1985
Chip:
Info: LCD 1980 - 1984
Model: TI-1706 III
Battery: solar
Adapter: solar
Year: 1990
Chip: Sharp LI3135MS
Info:
Model: TI-1706 SV
Battery: LR54
Adapter:
Year: 1999
Chip: sharp LI3154
Info: LCD 1991 - 1999
Model: TI-1744
Battery: 2 x LR43
Adapter:
Year: 1982
Chip: NEC uPD1831G
Info: Made in Taiwan
Model: TI-1746
Battery: solar
Adapter:
Year: 1985
Chip:
Info: Made in Taiwan
Model: TI-1750
Battery: 3 x LR44
Adapter:
Year: 1977
Chip: Toshiba T3532
Info: first TI-LCD - yellow LCD
Model: TI-1750-II
Battery: 2 x LR54
Adapter:
Year: 1980
Chip: Toshiba T3709
Info:
Model: TI-1750 III
Battery: 2 x LR43
Adapter:
Year: 1982
Chip: TPO311
Info:
Model: TI-1754
Battery: 2 x LR54
Adapter:
Year: 1981
Chip: Sharp LI3033MT
Info:In 1981/1982 Texas Instruments introduced not only cheap looking calculators manufactured in Taiwan like the TI-1015 or TI-1006 but some very stylish and thin calculators. The line covers the TI-1754 (credit card sized), TI-1755 (golden trim), TI-1756 (silver edition of the TI-1755) and TI-1757 (Music Card). All four models got an audible instead of a tactile feedback of the entries.
Model: TI-1755
Battery:
Adapter:
Year: 1982
Chip: Sharp LI3033MT
Info: In the year 1982 Texas Instruments introduced not only cheap looking calculators manufactured in Taiwan like the TI-1015 or TI-1006 but some very stylish and thin calculators.
Model: TI-1755 solar
Battery:
Adapter:
Year: 1983
Chip:
Info: LCD 1980 - 1984 Made in Taiwan
Model: TI-1757
Battery: 2 x LR54
Adapter:
Year: 1981
Chip: Sharp LI3033MT
Info:The TI-1757 added the ability to reproduce musical notes to the TI-1755, pressing all keys from zero to nine reproduces the musical scale.
Model: TI-1757 II
Battery: 2 x LR54
Adapter:
Year: 1983
Chip: Sharp LI3033MT
Info:The TI-1757 II "Melody Calculator" added to the similar TI-1755 the capabilities to play own melodies or the "Happy Birthday..." rhyme. The music function gives 10 notes of a scale. With 2 notes below the octave and one above you can play simple tunes. Another key allows you to play either flat (b) or sharp (#). This transforms the basic key of C to F and G by flattening the B to Bb in the first case and sharpening the F to F# in the second case. Thus most tunes can be played with a little practice.
Model: TI-1760 datacard
Battery: 2 x LR54
Adapter:
Year: 1979
Chip:
Info: first TI-LCD - yellow LCD
Model: TI-1766 +
Battery: LR54
Adapter:
Year: 1999
Chip:
Info: LCD 1991 - 1999
Model: TI-1766 II
Battery: solar
Adapter:
Year: 1986
Chip:
Info: LCD 1985 - 1990 Made in Taiwan
Model: TI-1766 III
Battery: solar
Adapter:
Year: 1992
Chip:
Info: Made in Malaysia
Model: TI-1766
Battery: solar
Adapter:
Year: 1983
Chip: T6758 Toshiba
Info: LCD 1980 - 1984
Model: TI-1767
Battery: solar
Adapter:
Year: 1984
Chip:
Info: The TI-1767 was introduced together with the TI-1706. It combines design elements of the wonderful TI-1766 with the cheaper housing of the TI-1706. Main difference to both other calculators is the 10-digit display capability.
Model: TI-1768 II
Battery: solar
Adapter:
Year: 1991
Chip: Sharp LI3135 or LI3154
Info:
Model: TI-1768
Battery: solar
Adapter:
Year: 1987
Chip: LI3135 sharp
Info: LCD 1985 - 1990
Model: TI-1775
Battery: solar
Adapter:
Year: 1988
Chip:
Info:
Model: TI-1775+
Battery: LR44
Adapter:
Year: 1997
Chip:
Info: made in Thailandia
Model: TI-1776
Battery: Solar
Adapter:
Year: 1982
Chip:
Info:At first glance seems the TI-1776 almost identical with the TI-1766, the first solar powered calculator introduced by Texas Instruments. The main difference is a much smaller and thinner housing, engineers of Toshiba, Japan shrank the calculator in all three dimensions by about 20%.
Model: TI-1780 card
Battery: solar
Adapter:
Year: 1983
Chip:
Info: LCD 1980 - 1984
Model: TI-1783 card
Battery: solar
Adapter:
Year: 1984
Chip:
Info: The TI-1783, introduced together with 4 other members of the TI CARD family (TI-1784, TI-1785, TI-1786 ), weights less than 1 ounce! Made in Taiwan
Model: TI-1784 card
Battery: solar
Adapter:
Year: 1985
Chip:
Info:The TI-1784, introduced together with 4 other members of the TI CARD family (TI-1783, TI-1785, TI-1786 ), weights less than 1 ounce! Made in Taiwan
Model: TI-1785 card
Battery: solar
Adapter:
Year: 1985
Chip:
Info: The TI-1785, introduced together with 4 other members of the TI CARD family (TI-1784, TI-1783, TI-1786 ), weights less than 1 ounce! Made in Taiwan
Model: TI-1786 card
Battery: solar
Adapter:
Year: 1990
Chip:
Info: The TI-1786, introduced together with 4 other members of the TI CARD family (TI-1784, TI-1783, TI-1785 ), weights less than 1 ounce! Made in Taiwan
Model: TI-1788
Battery: 2 x LR44
Adapter:
Year: 1981
Chip:
Info: LCD 1980 - 1984 Made in Taiwan
Model: TI-1788 II
Battery: 2 x LR43
Adapter:
Year: 1982
Chip:
Info: LCD 1980 - 1984 Made in Taiwan
Model: TI-1788 III
Battery: 2 x LR43
Adapter:
Year: 1985
Chip:
Info: Made in Taiwan
The TI-1788 III combines the clock and alarm time function known from the TI-1788 II with a whole set of additional functions and includes:
| • 8-digit calculator including full memory • Clock with alarm time and buzzer • World Time • Calendar with Day of Week function • Stopwatch with intermediate results • Conversion capability (multiplies with and divides by a constant) |
Model: TI-1790 datachron
Battery: 2 x LR44
Adapter:
Year: 1978
Chip: T3566 Toshiba
Info: first TI-LCD - yellow LCD
Model: TI-1795 plus
Battery: solar
Adapter:
Year: 1994
Chip: Sharp LI3154
Info:
Model: TI-1798
Battery: solar
Adapter:
Year: 1990
Chip:
Info: modern DESKTOP made in taiwan
Model: TI-18
Battery: 2 x LR43
Adapter:
Year: 1983
Chip: TPO311
Info: modern LCD 1982 - 1987
Model: TI-1850 visor kit
Battery: 2 x LR43
Adapter:
Year: 1981
Chip: TP0311
Info: slimline LCD - first solar LCD
Model: TI-1880 CheckWriter
Battery: 2 x LR43
Adapter:
Year: 1982
Chip: TPO0311
Info: The TI-1880 Checkwriter combines a wallet to hold the checks, balance book, cash, credit cards and a pen with a slimline calculator. The calculator is a standard TI-1001 with brown-silver colored housing.
Model: TI-1889 metric
Battery: 2 x LR1130
Adapter:
Year: 1982
Chip: Toshiba T6751
Info: Made in Japan. Compared with the basic calculators manufactured in Taiwan early in the Eighties, the "TI-1889 Metric Converter" feels more substantial.
Model: TI-1890 converter
Battery: 2 x LR44
Adapter:
Year: 1983
Chip: CD4559
Info: first LCD and slimline LCD
Model: TI-1895 II
Battery: solar
Adapter:
Year: 1989
Chip:
Info: Made in Taiwan
Model: TI-20
Battery: 2 x LR44
Adapter:
Year: 1980
Chip: TPO326
Info: first LCD and slimline LCD
Model: TI-2001 gti France
Battery: 2 x AA
Adapter:
Year: 1982
Chip: TP0455/CD4514 or TP0456/CD4564
Info: Blackhousing . Made in Italy
Model: TI-2001 gti France
Battery: 2 x AA
Adapter:
Year: 1982
Chip: TP0455/CD4514 or TP0456/CD4564
Info: Silver housing . Made in Italy
Model: TI-2001 gti ITA
Battery: 2 x AA
Adapter:
Year: 1982
Chip: TP0455/CD4514 or TP0456/CD4564
Info: Black Housing. Made in Italy
Model: TI-2001 gti ITA
Battery: 2 x AA
Adapter:
Year: 1982
Chip: TP0455/CD4514 or TP0456/CD4564
Info: Silver Housing. Made in Italy
Model: TI-2001 gti USA
Battery: 2 x AA
Adapter:
Year: 1982
Chip: CD4564
Info: first LCD and slimline LCD Made in USA
Model: TI-2001 logpit DE
Battery: 2 x AA
Adapter:
Year: 1982
Chip: CD4564
Info: the logo " logpit " is white. In 1982 Texas Instruments changed the design of the original LOGpit slightly. Please compare the color of the name plate just below the LC-displa
Model: TI-2001 logpit DE
Battery: 2 x AA
Adapter:
Year: 1981
Chip: CD4564
Info: the logo " logpit " is blue. The LOGpit sold in Germany was thought as a calculator for cars. With an integrated timer/clock you could measure your travelling speed, calculate your remaining time to the destination and some other car related calculations.
Model: TI-21
Battery: 2 x AA
Adapter:
Year: 1982
Chip:
Info: Taiwan
Model: TI-2200 checkwriter
Battery: LR43
Adapter:
Year: 1984
Chip: NEC uPD1833
Info: The TI-2200 Checkwriter keeps the balance of three different accounts. The idea behind this calculator traces back to the TI-1880 Checkwriter.
Model: TI-2200 II checker
Battery: LR43
Adapter:
Year: 1987
Chip:
Info: LCD 1985 - 1990
Model: TI-25
Battery: 2 x LR44
Adapter:
Year: 1978
Chip: T3763 Toshiba
Info: first LCD and slimline LCD
TI-2500 V0 (white) datamath
Audio Guide
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Model: TI-2500 V0 (white) datamath
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972 S/N: D0000 - 00599
Chip: TMS0110
Info: The famous TI-2500 Datamath calculator was first announced in April 1972 with a suggested retail price (SRP) of $149.95. Beginning June 1972 first customers received in the Neiman-Marcus and Sanger-Harris department stores in Dallas, TX their calculators before the formally introduction on September 21, 1972.
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Special thanks to Alexandru Balasa for the donation
Model: TI-2500 datamath
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS0119
Info: 1 version
Model: TI-2500
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS0119
Info: 2 version
Model: TI-2500 B
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS083
Info:
Model: TI-2500 II
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS083
Info:
Model: TI-2500 Longines Symphonette
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS0119
Info: This calculator sold by Longines Symphonette could be easily recognized as a Texas Instruments Datamath calculator. It followed the Electronic Calculator introduced few month earlier. The main differences between the original and the badged calculators are the olive-green colour of the housing, the grey keys and the Longines Symphonette label.
Model: TI-2500 Longines Symphonette 1 version
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS0119
Info: This calculator sold by Longines Symphonette could be easily recognized as a Texas Instruments Datamath calculator. It followed the Electronic Calculator ioduced few month earlier. The main differences between the original and the badged calculators are the olive-green color of the housing, the grey keys and the Longines Symphonette.
Model: TI-2510
Battery: 4 x AA ni-cd internal
Adapter: AC9120
Year: 1975
Chip: TMS0119
Info:
Model: TI-2511
Battery: 4 x AA alkaline
Adapter: AC9900/e
Year: 1974
Chip: TMS0119
Info: 1 version
Model: TI-2550
Battery: 3*AA NiCd or 4*AA Alkaline
Adapter: AC9130 or AC9120
Year: 1974
Chip: TMS0601
Info: Released one year after the legendary TI-2500, the first with a lens display (like bubbles)
Model: TI-2550 II
Battery: 2 AA or BP2
Adapter:
Year: 1976
Chip: TMS1071
Info:
Model: TI-2550 III
Battery: BP3
Adapter: AC9130A
Year: 1976
Chip: TMS1043
Info:
Model: TI-2550 IV
Battery: BP4
Adapter: AC9900/H
Year: 1979
Chip: TMC1981,TMC0999
Info:
Model: TI-2600 personal banker
Battery: solar
Adapter:
Year: 1987
Chip: Toshiba
Info:
Model: TI-30 LED
Battery: 9 volt or RK2
Adapter: AC9132 or AC9182
Year: 1976 Price: Lire 19.000 + 14 % iva
Chip: TMC0981
Info:This Italian-made TI-30 (4376 RCI, November 1976) looks different from the original TI-30. Instead of the usually printed TI logo
and the TEXAS INSTRUMENTS nameplate, this one uses only a sticker, a metal plate with a black background and gold-colored writing, like other calculators made in Europe, TI-45, TI-57, Privileg SR-35NC, but also a calculator sold by Radio Shack in the United States, the Radio Shack EC-4000. Later, during production, the metal plate was replaced to adapt it to the US design. We are particularly fond of this one, as we have been looking for one for many years and finally found two in one week (2023).
Here's a nice display for the famous TI-30 LED. They could have inserted a small wafer into this PCB and then covered it with resin or soldered the integrated circuit, the TMC0981.
Model: TI-30 clear case
Battery: 2 x LR44
Adapter: no
Year: 1986
Chip: TP0456/CD4565
Info:In particular, the writing is in orange, as are the keys and the battery cover of the same color, made in Italy (Rieti).
I have to thank Gaetano Perrella, former employee of Texas Instruments in Rieti for the donation!
Why were transparent shells made? Transparent shells helped visually where the CAD of the time was not enough, in this way further mechanical modifications could be made! (info Domenico Calì , former Texas Instruments employee).The transparent shells helped visually where the CAD of the time was not sufficient, in this way further mechanical modifications could be made! info Domenico Calì (ex Texas Instruments employee)
Another particular reason for the transparent case was to follow the behavior of the flexible PCB combined with the rubber keyboard, elements introduced for the first time at TI by us in Rieti. Info Gaetano Perrella (ex Texas Instruments employee)
Model: TI-30 D
Battery: 2 x AA
Adapter:
Year: 1982
Chip: TP0456 (CD4565)
Info: I must thank the family of Massimo Di Pietro, former Texas Instruments employee of the Cittaducale (Rieti) office, in particular his daughter Francesca and her husband Antonio who donated many databooks, calculators and personal paper material of their father Massimo to our ODV. A thousand thanks
Model: TI-30 galaxy
Battery: LR44
Adapter:
Year: 1985
Chip: Toshiba T6975S
Info: Thanks to my friend Paolo Maistrello who sent me this calculator donated by Giovanni Flammini.
Model: TI-30 II
Battery: 2 x LR44
Adapter:
Year: 1983
Chip: CD4565
Info: first LCD and slimline LCD
Model: TI-30 lcd
Battery: 2 x AA
Adapter:
Year: 1980
Chip: TP0320-4 or CD3202
Info: first LCD and slimline LCD
Model: TI-30 LED
Battery: 9 volt or RK2
Adapter: AC9132 or AC9182
Year: 1976 Price: Lire 19.000 + 14 % iva
Chip: TMC0981
Info: In the photo below, the test calculator used in the Rieti plant to test the TMC0981 chips. From an advertisement of the time! The most Famous. The TI-30 scientific calculator is more famous because it is the best-selling in the world (10 million units). In fact, no other calculator, at the same price, can give you the same performance at the same quality level. With the TI-30 you have the 8-digit display. The AOS (algebraic operating system) to set the expressions in the same sequence in which you write them, 15 levels of parentheses, memory, trigonometric functions, plus with the security of TI assistance even after a one year warranty!
Here's a nice display for the famous TI-30 LED. They could have inserted a small wafer into this PCB and then covered it with resin or soldered the integrated circuit, the TMC0981.
Model: TI-30 Braillotron
Battery: ni-cd
Adapter: yes
Year: 1980
Chip: TMC0981
Info:The TI-30 was introduced mid of 1976 and found soon its way to the vision impaired people. The German company Schoenherr developed already in 1975 a refreshable Braille display and introduced in 1978 this Braillotron. Since 1994 the company Schoenherr GmbH refirmed as EHG Handy Tech Elektronik GmbH and introduced in 1985 with the Galixa Speech a scientific calculator with natural voice speech output and later the Galixa Braille a scientific calculator with speech output and a 10-cell braille display. This Schoenherr Braillotron was manufactured till 1985. Another approach to solve the communication with vison impaired people could be found in talking calculators like the TSI speech+ and the Orbit TI-34.
Model: TI-30 slr
Battery: solar
Adapter:
Year: 1984
Chip: Toshiba T6974S
Info:
Model: TI-30 solar plus
Battery: solar
Adapter:
Year: 1987
Chip: T6974s Toshiba
Info: modern LCD 1982 - 1987
Model: TI-30 stat
Battery: 3 x LR44
Adapter:
Year: 1985
Chip: CD4557A
Info: modern LCD 1982 - 1987
Model: TI-30 test
Battery: 2 x LR44
Adapter:
Year: 1985
Chip: CPU: Toshiba T9948A
Info: Calculator donated by Massa Gennaro in 2023 during the 2nd edition "the story with Texas Instruments" in Rieti, (World Chili Pepper Fair). This rare calculator is a proof test for plastic material.
Model: TI-30X
Battery: solar
Adapter:
Year: 1994
Chip: Toshiba T6M38
Info:
Model: TI-30 X
Battery: solar
Adapter:
Year: 1985 ( RCI 09 02 85 )
Chip: Toshiba T6M38
Info: Calculator donated by Angelucci Adalgisa in 2023 during the 2nd edition "the story with Texas Instruments" in Rieti, (World Chili Pepper Fair)
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