If you have the opportunity to support those who work for free, in this non-profit museum, and with the aim of opening a museum in the city of Rieti dedicated to Texas Instruments. DONATE !

TI 1015 BROWNModel: TI-1015 brown
Battery: 2 x AA
Adapter: 
Year: 1982
Chip: T3876Stoshiba     
Info: Made in Japan Brown version


 

 

 


 

TI 1015Model: TI-1015 cream
Battery: 2 x AA
Adapter: 
Year: 1982
Chip: T3876Stoshiba     
Info: Made in Japan



 

 


 

TI 1020 brownModel: TI-1020 brown
Battery:  2 x AA
Adapter:     
Year: 1980
Chip: Sharp LI 3009
Info:We wrote the year 1980, when Texas Instruments discovered the lower labor costs of Taiwan, R.O.C. compared to US or Europe. Till the early 80s most calculators from Texas Instruments were produced either in US or Italy and some early LCD models like the TI-1768 even in Japan. Taiwan.

 

 


 

TI 1020Model: TI-1020 cream
Battery:  2 x AA
Adapter:     
Year: 1980
Chip: Sharp LI 3009
Info:We wrote the year 1980, when Texas Instruments discovered the lower labor costs of Taiwan, R.O.C. compared to US or Europe. Till the early 80s most calculators from Texas Instruments were produced either in US or Italy and some early LCD models like the TI-1768 even in Japan.  Made in Taiwan

 

 

 


 

TI 1025Model: TI-1025
Battery: 9 volt
Adapter: 
Year: 1977
Chip: TMC0923
Info: 

 

 

 


 

TI 1030Model: TI-1030
Battery: 2 x LR43
Adapter: 
Year: 1981
Chip: TP0311         
Info: slimline LCD - first solar LCD    

 

 

 


 

TI 1031Model: TI-1031
Battery: 2 x LR43
Adapter: 
Year: 1981
Chip: TP0311         
Info: slimline LCD - first solar LCD    

 

 

 


 

TI 1032Model: TI-1032
Battery: 2 x AA
Adapter: 
Year: 1982
Chip: TP0311         
Info: slimline LCD - first solar LCD

 

 

 


 

TI 1032Model: TI-1032 BPRTI 1032 BPR 01
Battery: 2 x AA
Adapter: 
Year: 1982
Chip: TP0311         
Info: This it was given to employees (Banca Popolare di Rieti) as a gift.



 


 

TI 1035Model: TI-1035
Battery: 2 x LR44
Adapter: 
Year: 1979
Chip: Toshiba T3703          
Info:first TI-LCD - yellow LCD  

 

 

 


 

TI 1036Model: TI-1036
Battery: 2 x LR1130
Adapter: 
Year: 1986
Chip:
Info: LCD  1980 - 1984 

 

 

 


 

TI 1040Model: TI-1040
Battery: 2 x LR43
Adapter: 
Year: 1980
Chip: TPO311
Info:


 

 


 

TI 1050Model: TI-1050
Battery: 9 volt
Adapter: 
Year: 1977
Chip: TMC0921
Info: 



 


 

TI 1070Model: TI-1070
Battery: 2 x LR43
Adapter: 
Year: 1979
Chip: TP0314         
Info: slimline LCD - first solar LCD  Made in Italy

 

 


 

TI 1071Model: TI-1071
Battery: 2 x LR43
Adapter: 
Year: 1979
Chip: TP0314         
Info: slimline LCD - first solar LCD  Made in Spain
   

 

 

 


 

TI 108Model: TI-108
Battery: solar
Adapter: 
Year: 1988
Chip:     
Info: LCD  1985 - 1990  Made in Taiwan

 

 


 

TI 108 overheadModel: TI-108 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".


 


 

TI 1100Model: TI-1100
Battery:  LR43       
Adapter: 
Year: 1990
Chip: Toshiba    
Info:    



 

 


 

TI 12 math explorerModel: TI-12 math explorer
Battery: solar
Adapter: 
Year: 1988
Chip:  T6m39s Toshiba
Info:  modern LCD  1982 - 1987

 

 

 

 


 

TI 0012 math explorerModel: TI-12 math explorer
Battery: solar
Adapter: 
Year: 1998
Chip:  T6m39s Toshiba
Info:  China. The Math Explorer ( TI-12) is another calculator introduced by Texas Instruments to perform fractional arithmetic for elementary school. 


 

 

 

 


 

TI 0012 overheadModel: TI-12 intermediate 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".



 

 


 

TI 1200Model: TI-1200
Battery: 9 volt
Adapter: 
Year: 1975
Chip: TMS0952
Info: Introduced in March 1975, the TI-1200 started together with the TI-1250 a great career with millions and millions units manufactured over the course of about 2 years. As a successor to both the stylish TI-1500 and the Exactra line, the TI-1200 demonstrated already the impressive design and technical engineering behind the TI-30. 

 

 

 


 

TI 1200 ladyModel: TI-1200 lady
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info:






 

TI 1205Model: TI-1205
Battery: 2 x AA ni-cd
Adapter: AC9130
Year: 1977
Chip: TMS0972
Info:Texas Instruments took in 1976 in conjunction with mathematics educators at two major universities an initiative to introduce a group of 6 calculators for educational use. Including the Little Professor, the limited function ABLE calculator, the colorful TI-1205 and TI-1255, the TI-30 and the sophisticated SR-51-II, these calculators helped students understand and use math concepts from kindergarten through college and career.The TI-1205 is based on the TI-1200 but includes rechargeable NiCd-batteries instead the standard 9V block battery. To enhance the readability of the keyboard both the size of the numerals and the color-scheme was improved.Disassembling the TI-1205 with Date code 1977 LTA and manufactured in May 1977 in Lubbock, Texas reveals an internal construction identical with the TI-1255. Instead of the 9V battery found in the original TI-1200/TI-1250 design, the TI-1205 makes use of 2 rechargeable, AA-sized NiCd (Nickel Cadmium) batteries. The printed circuit board (PCB) of the TI-1205 adds both the charging circuit for the batteries and a step-up converter to generate the 9V supply of the TMS0972 single-chip calculating circuit to the design known from the TI-1250. 

Donated from Marie Collas (FR)


 

TI 1220Model: TI-1220
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info: custom model manufactured for True Value Harware Store

 

 

 


 

TI 1225Model: TI-1225
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info: custom model manufactured for True Value Harware Store

 

 

 


 

TI 1250Model: TI-1250
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMC0952
Info: 

 

 

 

 


 

TI 1255 marieModel: TI-1255
Battery: 9 volt
Adapter: AC9130
Year: 1977
Chip: TMC0972
Info: property Marie Collas

 

 

 

 


 

TI 1260Model: TI-1260
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMC0954
Info: 

 

 

 


 

TI 1265Model: TI-1265
Battery: 9 volt
Adapter: AC9180
Year: 1977
Chip: TMS1043
Info: 

 

 

 


 

TI 1270Model: TI-1270
Battery: 9 volt
Adapter: 
Year: 1976
Chip: TMC0974
Info:

 

 

 

 


 

TI 1270 V0 01Model: 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.

 

 

 TI 1270 V0 00TI 1270 V0 02 

 

 

 

 


 

TI 1400Model: TI-1400
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info: 

 

 

 


 

TI 1450Model: TI-1450
Battery: 9 volt
Adapter: AC9180
Year: 1976
Chip: TMS0972
Info: 

 

 

 

 


 

TI 0015 explorerModel: 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

 

 

 


 

TI 15Model: TI-15
Battery: 9 volt
Adapter: 
Year: 1981
Chip: TMC0981
Info: EURO line 

 

 

 

 


 

TI 15 overheadModel: 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".


 

 


 

TI 150Model: 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

 

 


 

TI 1500Model: TI-1500
Battery: 2 x AA ni-cd
Adapter: AC9140, AC9900/C
Year: 1974
Chip: TMS0803
Info: 

 

 

 

 


 

TI 1505Model: TI-1505
Battery: LR1130
Adapter: 
Year: 1985
Chip: 
Info: LCD  1985 - 1990  Made in Taiwan

 


 

TI 1600Model: TI-1600
Battery: special 1,2 ni-cd
Adapter: AC9131
Year: 1977
Chip: TMS1043
Info: 

 

 

 

 


 

TI 1606Model: TI-1606
Battery: solar
Adapter: 
Year: 1985
Chip: 
Info: 



 


 

TI 1626Model: 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.

 


 

TI 1650Model: TI-1650
Battery: special 1,2 ni-cd
Adapter: AC9131
Year: 1976
Chip: TMS1043
Info: 

 

 

 


 

TI 1680Model: TI-1680
Battery: special 1,2 ni-cd
Adapter: AC9131,AC9132
Year: 1978
Chip: TMC1981,TMC0999
Info: 

 

 


 

TI 1700Model: TI-1700
Battery: 3 x LR54
Adapter: 
Year: 1978
Chip: T3551 or T3708toshiba            
Info: first TI-LCD - yellow LCD  


 

TI 1706Model: TI-1706
Battery: solar
Adapter: solar
Year: 1983
Chip: Sharp LI3129
Info: 

 

 


 

TI 1706 IIModel: TI-1706 II
Battery: 2 x solar
Adapter: 
Year: 1985
Chip:
Info: LCD  1980 - 1984

 

 


 

TI 1706 IIIModel: TI-1706 III
Battery: solar
Adapter: solar
Year: 1990
Chip: Sharp LI3135MS
Info: 

 


 

TI 1706 SVModel: TI-1706 SV
Battery: LR54
Adapter: 
Year: 1999
Chip: sharp LI3154  
Info: LCD  1991 - 1999 

 

 

 


 

TI 1744Model: TI-1744
Battery: 2 x LR43
Adapter: 
Year: 1982
Chip: NEC uPD1831G
Info: Made in Taiwan 

 

 

 


TI 1746Model: TI-1746
Battery: solar
Adapter: 
Year: 1985
Chip: 
Info: Made in Taiwan 

 

 

 


TI 1750Model: TI-1750
Battery: 3 x LR44
Adapter: 
Year: 1977
Chip: Toshiba T3532
Info: first TI-LCD - yellow LCD  

 

 

 


 

TI 1750Model: TI-1750-II
Battery: 2 x LR54
Adapter: 
Year: 1980
Chip: Toshiba T3709
Info:

 

 

 


 

TI 1750 IIIModel: TI-1750 III
Battery: 2 x LR43
Adapter: 
Year: 1982
Chip: TPO311
Info: 

 

 

 


 

TI 1754Model: 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.



 


 

TI 1755Model: 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. 


 

 


 

TI 1755 slrModel: TI-1755 solar
Battery: 
Adapter: 
Year: 1983
Chip: 
Info: LCD  1980 - 1984  Made in Taiwan

 

 


 

TI 1755Model: 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.



 


 

TI 1755Model: 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.


 


 

TI 1760 datacardModel: TI-1760 datacard
Battery: 2 x LR54
Adapter: 
Year: 1979
Chip:          
Info: first TI-LCD - yellow LCD  

 

 


 

TI 1766 +Model: TI-1766 +
Battery: LR54
Adapter: 
Year: 1999
Chip:   
Info: LCD  1991 - 1999 

 

 

 


 

TI 1766 IIModel: TI-1766 II
Battery: solar
Adapter: 
Year: 1986
Chip: 
Info: LCD  1985 - 1990  Made in Taiwan

 

 

 

 


 

TI 1766 IIIModel: TI-1766 III
Battery: solar
Adapter: 
Year: 1992
Chip: 
Info: Made in Malaysia




 


 

TI 1766Model: TI-1766
Battery:  solar
Adapter: 
Year: 1983
Chip:  T6758 Toshiba 
Info: LCD  1980 - 1984 

 

 


 

TI 1767Model: 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.

 

 


 

TI 1768 IIModel: TI-1768 II
Battery: solar
Adapter: 
Year: 1991
Chip:  Sharp LI3135 or LI3154    
Info:


 

 

 


 

TI 1768Model: TI-1768
Battery: solar
Adapter: 
Year: 1987
Chip:  LI3135 sharp    
Info: LCD  1985 - 1990 

 

 

 


 

TI 1775Model: TI-1775
Battery: solar
Adapter: 
Year: 1988
Chip: 
Info: 

 

 

 


 

TI 1775+Model: TI-1775+
Battery:  LR44

Adapter: 
Year: 1997
Chip:
Info: made in Thailandia 


 

TI 1776Model: 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%. 

 

 

 


 

TI 1780Model: TI-1780 card
Battery: solar
Adapter: 
Year: 1983
Chip:
Info: LCD  1980 - 1984 


 

TI 1783 cardModel: 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-1784TI-1785TI-1786 ), weights less than 1 ounce!  Made in Taiwan

 


TI 1784 cardModel: 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-1783TI-1785TI-1786 ), weights less than 1 ounce!  Made in Taiwan

 


TI 1785 cardModel: 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-1784TI-1783TI-1786 ), weights less than 1 ounce!  Made in Taiwan


 

TI 1786 cardModel: 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-1784TI-1783TI-1785  ), weights less than 1 ounce!  Made in Taiwan


 

TI 1788Model: TI-1788
Battery: 2 x LR44
Adapter: 
Year: 1981
Chip: 
Info: LCD  1980 - 1984  Made in Taiwan

 

 

 


 

TI 1788 IIModel: TI-1788 II
Battery: 2 x LR43
Adapter: 
Year: 1982
Chip: 
Info: LCD  1980 - 1984  Made in Taiwan

 

 


 

TI 1788 IIIModel: 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)

 







TI 1790 datachronModel: TI-1790 datachron
Battery: 2 x LR44
Adapter: 
Year: 1978
Chip: T3566 Toshiba          
Info: first TI-LCD - yellow LCD  

 

 

 


 

TI 1795 plusModel: TI-1795 plus
Battery: solar
Adapter: 
Year: 1994
Chip: Sharp LI3154          
Info:   

 

 

 


 

TI 1798Model: TI-1798
Battery:  solar
Adapter:     
Year: 1990
Chip: 
Info: modern DESKTOP made in taiwan

 

 

 


 

TI 18Model: TI-18
Battery: 2 x LR43
Adapter: 
Year: 1983
Chip:  TPO311
Info:  modern LCD  1982 - 1987

 

 

 


 

TI 1850 vision kitModel: TI-1850 visor kit
Battery: 2 x LR43
Adapter: 
Year: 1981
Chip: TP0311         
Info: slimline LCD - first solar LCD


 

TI 1880 checkwriterModel: 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. 



 


 

TI 1889 metricModel: TI-1889 metric
Battery: 2 x LR1130
Adapter: 
Year:  1982
Chip: Toshiba T6751 
Info:  Made in JapanCompared with the basic calculators manufactured in Taiwan early in the Eighties, the "TI-1889 Metric Converter" feels more substantial.

 

 


 

TI 1890 converterModel: TI-1890 converter
Battery: 2 x LR44
Adapter: 
Year: 1983
Chip:  CD4559
Info:  first LCD and slimline LCD  

 

 


 

TI 1895 IIModel: TI-1895 II
Battery: solar
Adapter: 
Year: 1989
Chip: 
Info: Made in Taiwan


 

 


 

ti 20Model: TI-20
Battery: 2 x LR44
Adapter: 
Year: 1980
Chip:  TPO326
Info:  first LCD and slimline LCD

 

 


 

TI 2001 gti FRAModel: TI-2001 gti France
Battery: 2 x AA
Adapter: 
Year: 1982
Chip: TP0455/CD4514 or TP0456/CD4564
Info:
Blackhousing . Made in Italy



 


 

TI 2001 gti FRAModel: TI-2001 gti France
Battery: 2 x AA
Adapter: 
Year: 1982
Chip: TP0455/CD4514 or TP0456/CD4564
Info: Silver housing . Made in Italy



 

 


 

TI 2001 gti ITA blackModel: TI-2001 gti ITA
Battery: 2 x AA
Adapter: 
Year: 1982
Chip:  TP0455/CD4514 or TP0456/CD4564
Info: Black Housing. Made in Italy    




 

 


 

TI 2001 gti ITAModel: TI-2001 gti ITA
Battery: 2 x AA
Adapter: 
Year: 1982
Chip:  TP0455/CD4514 or TP0456/CD4564
Info: Silver Housing. Made in Italy

 

 

 


 

TI 2001 gti USAModel: TI-2001 gti USA
Battery: 2 x AA
Adapter: 
Year: 1982
Chip:  CD4564
Info:  first LCD and slimline LCD  Made in USA   

 

 

 


 

TI 2001 logpitModel: 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

 

 


 

TI 2001 logpit de blueModel: 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.



 

 


 

TI 21Model: TI-21
Battery: 2 x AA
Adapter: 
Year: 1982
Chip:     
Info: Taiwan

 

 

 

 


 

TI 2200Model: 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.


 

TI 2200 IIModel: TI-2200 II checker
Battery: LR43
Adapter: 
Year: 1987
Chip:     
Info: LCD  1985 - 1990 


 

TI 25Model: 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

italy S

 

  

usa

 

 


TI 2500 V0 white (0)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.

 

TI 2500 V0 white (1)TI 2500 V0 white (2)

 

 

 

 

Special thanks to Alexandru Balasa for the donation


 

TI 2500 1vModel: TI-2500 datamath
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS0119
Info: 1 version


 

 


 

TI 2500 2vModel: TI-2500 
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS0119
Info: 2 version


 

 

 


 

TI 2500 BModel: TI-2500 B 
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS083
Info:

 

 

 


 

TI 2500 IIModel: TI-2500 II 
Battery: 6 x AA ni-cd internal
Adapter: AC9100
Year: 1972
Chip: TMS083
Info:

 

 

 


 

TI 2500 longinesModel: 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. 

 


 

TI 2500 longines 1 ver 00Model: 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.

 

TI 2500 longines 1 ver 01

TI 2500 longines 1 ver 02

 

 

 

 

 

 


 

TI 2510Model: TI-2510
Battery: 4 x AA ni-cd internal
Adapter: AC9120
Year: 1975
Chip: TMS0119
Info:

 

 


 

TI 2511Model: TI-2511
Battery: 4 x AA alkaline
Adapter: AC9900/e
Year: 1974
Chip: TMS0119
Info: 1 version

 

 

 


 

TI 2550Model: 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)

 

 

 

 


 

TI 2550 IIModel: TI-2550 II
Battery: 2 AA or BP2
Adapter: 
Year: 1976
Chip: TMS1071
Info:

 

 

 


 

TI 2550 IIIModel: TI-2550 III
Battery: BP3
Adapter: AC9130A
Year: 1976
Chip: TMS1043
Info:


 

 


 

TI 2550 IVModel: TI-2550 IV
Battery: BP4
Adapter: AC9900/H
Year: 1979
Chip: TMC1981,TMC0999
Info:


 

 


 

TI 2600 personal bankerModel: TI-2600 personal banker
Battery: solar
Adapter: 
Year: 1987
Chip: Toshiba     
Info:


 


 

TI 0030 1v

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 logoTI 0030 1v 00 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).


TI 0030 1vs 01TI 0030 1v 04TI 0030 1v 03TI 0030 1v 02display ti30Here'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.

 

 

 

  


 

TI 0030 clearcaseTI 0030 01 clearcaseModel: 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)

 

  


 

TI 30 solar plusModel: 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

 

 

 

 


 

TI 30 IIModel: TI-30 II
Battery: 2 x LR44
Adapter: 
Year: 1983
Chip:  CD4565  
Info: first LCD and slimline LCD 

 

 

 


 

TI 30 lcdModel: TI-30 lcd
Battery: 2 x AA
Adapter: 
Year: 1980
Chip:  TP0320-4 or CD3202   
Info: first LCD and slimline LCD

 

 

 


 

TI 0030 ledModel: 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!

 


TI 30TI 0030 led 1display ti30Here'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.

 

 

 

 

 

 


 

TI 0030 clearcaseModel: 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

TI 0030 braillotron 00TI 0030 braillotron 02TI 0030 braillotron 01

  

 

 


 

TI 0030 slrModel: TI-30 slr
Battery: solar
Adapter: 
Year: 1984
Chip: Toshiba T6974S 
Info: 




 

 


 

TI 30 solar plusModel: TI-30 solar plus
Battery: solar
Adapter: 
Year: 1987
Chip:  T6974s Toshiba
Info:  modern LCD  1982 - 1987

 

 

 

 


 

TI 30 statModel: TI-30 stat
Battery: 3 x LR44
Adapter: 
Year: 1985
Chip:  CD4557A
Info:  modern LCD  1982 - 1987

 

 

 


 

TI 0030 testTI 0030 test 1Model: 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.

  


 

TI 0030X SOLARModel: TI-30X 
Battery: solar
Adapter: 
Year: 1994
Chip: Toshiba T6M38 
Info:

 

 

 

 


TI 0030X SOLARModel: 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)

  

 


TI 30 xaModel: TI-30 xa
Battery: 2 x LR44
Adapter: 
Year: 1996
Chip:  T6m80 Toshiba
Info:




 

 


 

TI 30 xaModel: TI-30 xa
Battery: 2 x LR44
Adapter: 
Year: 1997
Chip:  T6m79 Toshiba
Info: modern LCD  1991 - 1999

 

 

 


 

TI 0030 XS overheadModel: TI-30 XS overhead
Battery: 
Adapter: 
Year: 2007
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".


 

 


 

ti 30xsModel: TI-30 xs
Battery: solar , CR2032
Adapter: 
Year: 2007
Chip:
Info: modern LCD  2000 - 2017

 

 

 


 

ti 3000Model: TI-3000
Battery:                
Adapter:  110 volt 
Year: 1972
Chip: TMS0109
Info:  DESKTOP line

 

 


TI 0308 elleModel: TI-308 elle
Battery: LR1130              
Adapter:   
Year: 1988
Chip: 
Info:

 

 

 


 

TI 0309 nuance 00Model: TI-309 Nuance
Battery: Solar               
Adapter:   
Year: 1989
Chip: 

Info: The box states: An elegant hinged case calculator designed for women. A foldable compact protective case which fits easily into the purse or handbag.

TI 0309 nuance 01The TI-309 Nuance was available in two colors, soft beige and purple.

 


 

TI 30x IIsModel: TI-30X IIs
Battery: solar , CR2025
Adapter: 
Year: 1999
Chip:
Info: modern LCD  1991 - 1999 made in China

 

 

 


 

TI 31Model: TI-31 lcd
Battery: solar
Adapter: 
Year: 1987
Chip: Toshiba T6974S
Info: At first glance the TI-31 added just a few conversions and statistical functions to the TI-30 Challenger.


 

 

 


 

TI 31Model: TI-31 led
Battery: 9 volt
Adapter: 
Year: 1978
Chip: TMC0982
Info: EURO line 

 

 

 


 

TI 0032 SOLARModel: TI-32
Battery: solar
Adapter: 
Year: 1988
Chip: 
Info: Made in Taiwan




 

 


 

TI 3200Model: TI-3200 dialer
Battery: 2 x CR2025  
Adapter: 
Year: 1991
Chip: CPU: Toshiba T7915-0108
 RAM: Sharp LH5160
    

Info:

 

 

 


 

TI 33Model: TI-33
Battery: 9 volt
Adapter: 
Year: 1977
Chip: TMC0984
Info: EURO line 

 

 

 


 

TI 34 II overheadModel: TI-34 II 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".


 

 


 

TI 0034 IIModel: TI-34 II
Battery: solar
Adapter: 
Year: 2000
Chip:  
Info: In 1999 the TI-30 line of calculators received a great feature - a 2-line display. The upper entry line displays up to 11 characters and can be scrolled left and right up to 88 characters. The lower result line displays 10 digits of mantissa and 2 digits for the exponent.
Compared with the traditional TI-34 the upper line permits to recall the last entry and to correct instantly. 


 

 


 

TI 34Model: TI-34
Battery: solar
Adapter: 
Year: 1987
Chip:  Thoshiba T7988 
Info:  modern LCD  1982 - 1987

 

 

Donated by Onofri Rodolfo (Rudy) 

 


 

TI 0340Model: TI-340
Battery:          
Adapter: 120 volt
Year: 1975
Chip: TMS0106      
Info:

 

 

 


 

TI 35Model: TI-35 black
Battery: 2 x LR44
Adapter: 
Year: 1981 Price: L. 35.00 + iva 14%
Chip:  TPO324
Info:From an advertisement of the time! The most ready. The TI-35 scientific calculator is more responsive because it has "constant" memory. To keep the contents unchanged, even when the calculator is turned off, restart the calculations in due course. AOS (algebraic operating system): 54 functions, algebraic, logarithmic, trigonometric and statistical, ultra-flat with very long life batteries, energy saving device!

 

 

 


 

TI 35Model: TI-35 Galaxy Solar
Battery: solar
Adapter: 
Year: 1985 Price: L. ? + iva 14%
Chip:  Toshiba T6975AS
Info:

  


 

TI 35Model: TI-35 plus
Battery: 2 x LR44
Adapter: 
Year: 1981 Price: L. 35.00 + iva 14%
Chip:  TPO324
Info:From an advertisement of the time! The most ready. The TI-35 scientific calculator is more responsive because it has "constant" memory. To keep the contents unchanged, even when the calculator is turned off, restart the calculations in due course. AOS (algebraic operating system): 54 functions, algebraic, logarithmic, trigonometric and statistical, ultra-flat with very long life batteries, energy saving device!

 

 

 


 

TI 35 silverModel: TI-35 silver
Battery: 2 x LR44
Adapter: 
Year: 1981
Chip:  TPO324
Info:  silver frame  

 

 

 


 

TI 35 solarModel: TI-35 solar
Battery: solar
Adapter: 
Year: 1984
Chip:  T6974S Toshiba
Info:          



 

 

 


 

TI 3500Model: TI-3500
Battery:                
Adapter:  110 volt 
Year: 1973
Chip: TMS0106
Info:  DESKTOP line 


 

 

 


 

TI 3510Model: TI-3510
Battery:                
Adapter:  110 volt 
Year: 1974
Chip: TMS0106, MM5314 national semiconductor
Info:  DESKTOP line   with clock


 50px icona pdf

Diagram TI-3510

 


 

TI 36 solarModel: TI-36
Battery: solar
Adapter: 
Year: 1986
Chip:  Thoshiba T7768 
Info:  modern LCD  1982 - 1987

 

 

 


 

TI 0036 x solar 1996Model: TI-36 x
Battery: solar
Adapter: 
Year: 1996
Chip:
Info:


 

 

 


 

TI 0036x 2000TI 0036 x solar 2000Model: TI-36 x
Battery: solar
Adapter: 
Year: 2000
Chip:
Info: This TI-36 with the "Delia" inscription has a special meaning, because it was donated to our association by Mrs. Stefania Cervelli, a former Texas Instruments employee at the Cittaducale (Rieti) plant. Delia is Mrs. Stefania's daughter !

Questa calcolatrice TI-36 con la scritta "Delia" ha un significato speciale, perché è stata donata alla nostra associazione dalla Signora Stefania Cervelli, ex dipendente della Texas Instruments dello stabilimento di Cittaducale (Rieti). Delia è la figlia della Signora Stefania!

 

 

 

DATAMATH.ORG

 


 

TI 38Model: TI-38
Battery: 2 x LR44
Adapter: 
Year: 1981
Chip:  TPO326
Info:  first LCD and slimline LCD     

 

 

 


 

TI 40Model: TI-40
Battery: 2 x LR44
Adapter: 
Year: 1983
Chip:  CD4507
Info:  slanted LCD  generation

 

 

 


 

TI 4000Model: TI-4000
Battery:                
Adapter:  110 volt 
Year: 1974
Chip: TMS0201,TMS0301 
Info:  DESKTOP line  


 

 


 

TI 41Model: TI-41
Battery: 9 volt
Adapter: 
Year: 1977
Chip: TMC0982
Info: EURO line 

 

 

 


 

TI 410Model: TI-410
Battery:          
Adapter: 120 volt
Year: 1974
Chip: TMS0201 and TMSxxxx      
Info:



 

 


 

TI 42Model: TI-42 mba
Battery: BP7
Adapter: AC9900
Year: 1979
Chip: TMC1502
Info: EURO line Made in Iatly

 

 

 


 

TI 44Model: TI-44
Battery: 2 x LR44
Adapter: 
Year: 1983
Chip:  TPO322
Info:  first LCD and slimline LCD   

 

 

 


 

TI 0045 1vModel: TI-45 1 version
Battery: BP8 or BP9
Adapter: AC9900
Year: 1977
Chip: TMC1983
Info:At first glance is the European TI-45 identical to the SR-40. Surprisingly the TI-45 features a green vacuum fluorescent display (VFD), a major exception in the Majestic-line. Dismantling this TI-45 manufactured in September 1978 by Texas Instruments in their Rieti, Italy facility reveals a slightly more complex design than the SR-40 sporting a red LED display. Main reason is the higher operating voltage of the VF-Display, engineers at Texas Instruments are using a very effective way to generate -22 Volts out o the 9V battery with a simple voltage multiplier using just four diodes and four capacitors and an charge-pump oscillator integrated on the TMC1980 single-chip calculator circuit. Two variations of the TI-45 were reported, they differ in the mask over the display. View the later model with a molded TI-logo and TEXAS INSTRUMENTS nameplate. 

 TI 0045 v1 01On the side you can see the serial, the date of construction 53 week of 1977 and the nation of manufacture Italy.

 


 

TI 0045 2vModel: TI-45 2v
Battery: BP8 or BP9
Adapter: AC9900
Year: 1978
Chip: TMC1983
Info: The TI-45 uses the exact same 4 ceramic capacitors plus 4 diodes to boost the 30 V anode voltage. No other components beside the TMC chip



 

 


 

TI 450Model: TI-450
Battery: 
Adapter: 120 vac
Year: 1974
Chip: TMS0203, TMC0322
Info:


 


 

TI 50Model: TI-50
Battery: 2 x LR44
Adapter: 
Year: 1979
Chip:  TPO321
Info:  first LCD and slimline LCD   

 

 

 


 

TI 0500 01Model: TI-500
Battery: 
Adapter: 120 vac
Year: 1974
Chip:TMS0203, TMS0221, TMC0305
Info: 
This rare TI-500 was introduced in the year 1974 and seems to be a sibling of the TI-450 and TI-620.The TI-500 is based on the TMS0200 Chipset for 12-digit desktop calculators but misses the usual 12-digit display.TI 0500 02 Related calculators using this chip set are the SR-20 and SR-22. The first usage of the TMS0200 Building Blocks were the TI-4000 and the Canon 121F. The architecture found in this TI-500 differs greatly from these calculators, it uses the  Data Chip TMS0203, ROM Chip TMC0305, adding the Printer Chip TMS0221 to control the drum printer.



TI 5000 microprinterModel: TI-5000 microprinter
Battery: 4 x AAA                       
Adapter: AC9175
Year: 1982
Chip: Toshiba T676         
Info:  later HANDHELD printing

 

 


TI 5006 IIModel: TI-5006 II
Battery: 4 x AA                  
Adapter: 
Year: 1994
Chip: Toshiba T7916S
Info:  later HANDHELD printing 

 

 

 

 


TI 5008 (2)TI 5008 (1)Model: TI-5008 microprinter
Battery: 3 x AAA                       
Adapter: AC9175
Year: 1982
Chip: Toshiba T676         
Info:  Thermal paper TP-25000

 

 

 


TI 501Model: TI-501
Battery:  2 x AA        
Adapter: 
Year: 1982
Chip: Toshiba    
Info:    



 

 


 

TI 502 blueModel: TI-502 blue
Battery: LR1130
Adapter: 
Year: 1988
Chip: Sharp LI3155
Info: LCD  1985 - 1990

 

 

 


 

TI 502 REDModel: TI-502 red
Battery: LR1130
Adapter: 
Year: 1988
Chip: Sharp LI3155
Info: LCD  1985 - 1990 



 

 


 

TI 5020Model: TI-5020
Battery:  Solar
Adapter:     
Year: 1984
Chip: Toshiba T6897
Info:

 

 


 

TI 5022Model: TI-5022
Battery:  solar
Adapter:    
Year: 1983
Chip: Thoshiba T6897
Info: modern DESKTOP

 

 


 

ti 5025Model: TI-5025
Battery: 7 x AA ni-cd    
Adapter:  AC9172
Year: 1980
Chip: TMC0262       
Info:  first HANDHELD printing 

 

 

 


TI 503Model: TI-503
Battery: LR54
Adapter: 
Year: 1991
Chip:     
Info: LCD  1991 - 1999 Made in China

 

 


 

TI 503 svModel: TI-503 sv
Battery: solar , CR2032
Adapter: 
Year: 2017
Chip:
Info: modern LCD  2000 - 2017 made in Philippines

 

 


 

TI 5032Model: TI-5032
Battery: 4 x AA
Adapter: AC9175
Year: 1983
Chip: 
Manual:
   

Info: Donated from Maurizio Candito / The TI-5032 was the first battery operated printing desktop calculators introduced by Texas Instruments


 

 


 

TI 5034Model: TI-5034 2nd design
Battery: 220 volt        
Adapter: 
Year: 1990
Chip: Mitsubishi M58345AP      
Info:

 

 

 


 

TI 5038 paper free printerModel: TI-5038 paper free printer
Battery: 3 x AA        
Adapter: AC9175
Year: 1989
Chip: Toshiba T7724, UM6116  
Info:  The TI-5038 continued a revolutionary concept introduced already in the year 1987: The TI-2800 Paperless Printer! The calculator works like the known printing desktops e.g. the TI-5130. All calculations are done on the main display. Instead the usual printout on a paper the results are scrolled through a secondary display with 6 lines. A maximum of 99 lines could be stored and scrolled up and down with the arrow keys. 

 


 

TI 5045 SVModel: TI-5045 SV
Battery:  no
Adapter:  220 volt AC   
Year: 1996 made in China
Chip: Toshiba TC83220-0027 or T7872-0016
Info: Donated by Fabio Sala

 


 

TI 505Model: TI-505
Battery: solar
Adapter: 
Year: 1985
Chip:     
Info: LCD  1985 - 1990 


 

TI 5050mModel: TI-5050 M
Battery: 6 x AA ni-cd            
Adapter: AC9171
Year: 1976
Chip: TMS1115         
Info:  first HANDHELD printing

 

 

 

 


TI 508 plusModel: TI-508 plus
Battery: solar 
Adapter: 
Year: 1995
Chip: Sharp LI3154
Info: made in Thailand 


 

 


 

TI 51 IIIModel: TI-51 III
Battery: BP7
Adapter: AC9132
Year: 1979 Price: L.59.000 + iva 14%
Chip: TMC1502
Info:TI-51 III same as TI-55, but TI-55 was sold in the US while TI-51 III was sold in Europe. From an advertisement of the time! The most technical. Because it specializes in solving math problems (90 functions): from logarithms to trigonometry and complex statistical problems. Easy programmability (32 program steps, 10 memory registers) exponential notation. AOS (algebraic operating system). Polar/Rectangular conversions and unit conversions. It offers you the possibility to solve all your professional problems at the touch of a button. 

 

 

 


 

TI 510Model: TI-510
Battery: LR54 / solar
Adapter: 
Year: 1980
Chip: Toshiba T9731BU
Info:

 

 


 

TI 5100Model: TI-5100
Battery:                
Adapter:  AC/DC 220 volt -12 volt  
Year: 1981
Chip: TMC1073    
Info:  DESKTOP line 

 

 


 

ti 5112Model: TI-5112
Battery: 2 x AA           
Adapter: 
Year: 1988
Chip: Toshiba T6736S      
Info:



 

 


 

TI 5130Model: TI-5130
Battery: 220 volt        
Adapter: AC9900/T2
Year: 1983
Chip: NEC uPD1234G      
Info: donated by the cellar clearer

 

 

 


 

TI 5130 IIModel: TI-5130 II
Battery: 220 volt        
Adapter: 
Year: 1987
Chip: NEC uPD1234G      
Info: made in Japan   



 


 

TI 5150Model: TI-5150
Battery: 220 volt        
Adapter: 
Year: 1990
Chip:  
Info:

 

 


 

TI 5200 beigeModel: TI-5200 beige
Battery:                
Adapter:  AC/DC 220 volt -12 volt  
Year: 1978
Chip: TMC1278 
Info:  DESKTOP line 



 


 

TI 5200 brownModel: TI-5200 brown
Battery:                
Adapter:  AC/DC 220 volt -12 volt  
Year: 1978
Chip: TMC1278 
Info:  DESKTOP line 



 


 

TI 5220Model: TI-5220
Battery:      
Adapter:  110 or 220 volt     
Year: 1977
Chip: TMS1309, TMS1372
Info:  DESKTOP line 

 


 

TI 53Model: TI-53
Battery: 2 x LR44
Adapter: 
Year: 1982
Chip:  TPO323
Info:  first LCD and slimline LCD

 

 

 


 

TI 0053 slanted RCIModel: TI-53 slanted
Battery: 2 x LR44
Adapter: 
Year: 1985 ( RCI 17 85 )
Chip:  TPO323
Info: Calculator donated by Ludovisi Giancarlo in 2023 during the 2nd edition "the story with Texas Instruments" in Rieti, (World Chili Pepper Fair).

 

 

 


 

TI 5315Model: TI-5315
Battery: 
Adapter: AC 110 volt    
Year: 1989
Chip: NEC upd7520
Info: modern DESKTOP built in clock

 


 

TI 54Model: TI-54
Battery: 2 x LR44
Adapter: 
Year: 1982
Chip:  CD4555,CD4551  
Info:  slanted LCD  generation

 

 

 


 

TI 55Model: TI-55
Battery: BP 7
Adapter: AC9132
Year: 1979
Chip: TMC1503          
Info: TI
-55 same as TI-51 III, but TI-55 was sold in the US while TI-51 III was sold in Europe.

 

 


 

TI 55 IIModel: TI-55 II
Battery: 2 x LR44
Adapter: 
Year: 1981
Chip:  CD4555,CD4556
Info:  slanted LCD  generation

 

 

 


 

TI 0055 II programmableModel: TI-55 II programmable
Battery: 2 x LR44
Adapter: 
Year: 1984
Chip:  TP0456/CD4555, CD4556
Info: This TI-55 II could be called a rare calculator.

 

 

 


 

TI 55 IIIModel: TI-55 III
Battery: 2 x LR44
Adapter: 
Year: 1986
Chip:  CD4555,CD4556
Info:  slanted LCD  generation

 

 

 

 


 

TI 56Model: TI-56
Battery: 2 x LR44
Adapter: 
Year: 1985
Chip:  CD4555,CD4556
Info:  slanted LCD  generation

 

 

 


 

TI 57 lcdModel: TI-57 lcd
Battery: 2 x LR44
Adapter: 
Year: 1984
Chip:  CD4555,CD4572
Info:  slanted LCD  generation