Texas Instruments BA-20 (1998)

Date of introduction:  1998 Display technology:  LCD
New price:  $24.99 (SRP 2003) Display size:  10
Size:  4.7" x 5.0" x 0.80"
 120 x 128 x 20 mm3
Weight:  3.9 ounces, 110 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 02 year 2002
AC-Adapter:   Origin of manufacture:  China (S)
Precision:  10 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

Texas Instruments introduced in the United States with the BA-20 already in the year 1986 a very useful calculator. Beside the basic calculator functions 6 additional keys enable the COST, SELL, MARGIN calculations. You enter either two of the variables and get instantly the result of the remaining value.

BA-20_PCB.jpg (86492 Byte)The technology inside this BA-20 manufactured in 2002 looks very similiar to the first version - a 16 years old design. Even the Integrated Circuit makes use of a traditional housing instead the common Chip-on-Board (COB) technology.  

In Europe a very similar calculator was sold as TI-620.

An earlier version of the BA-20 sports an integrated clock like the European TI-610. In August 2002 the design of the BA-20 was slightly changed to allow the usage of larger solar cells.

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If you have additions to the above article please email:

Joerg Woerner, December 5, 2001. No reprints without written permission.