DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-31
|Date of introduction:||1986||Display technology:||LCD|
|New price:||Display size:||8 (5 + 2)|
|Size:|| 5.5" x 2.8" x 0.45"
140 x 72 x 11 mm3
|Weight:||2.8 ounces, 78 grams||Serial No:|
|Batteries:||n.a.||Date of manufacture:||mth 05 year 1986|
|AC-Adapter:||Origin of manufacture:||Japan (T)|
|Precision:||11||Integrated circuits:||Toshiba T6974S|
|Program steps:||Courtesy of:||Joerg Woerner|
|Download manual:||(US: 3.2 MByte)|
At first glance the TI-31 added just a few conversions and statistical functions to the TI-30 Challenger. If you explore the calculator from deeper, you'll discover the electronics of the earlier TI-30 SLR. Texas Instruments continued in 1986 the Toshiba-built calculators with this TI-31 and the great BA-SOLAR.
Only few month after production of the TI-31 was launched in Japan, a first redesign introduced both smaller solar cells and a new designation TI-31 SOLAR.
In a next step the production of this design was shifted to China. The calculator kept the name plate TI-31 SOLAR and uses identical housing parts and printed circuit boards.
The later Italian version of the TI-31 SOLAR looks completely different. View the Italian TI-31 SOLAR and BA-SOLAR for a small comparision.
This one seems to be identical to the later TI-30 SLR+ and the TI-35 SLR.
A less sophisticated calculator was introduced with the TI-30 SOLAR.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.