Texas Instruments BA-20 (1990)

Date of introduction:  1990 Display technology:  LCD
New price:   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:  LR41 (30A) Date of manufacture:  mth 07 year 1992
AC-Adapter:   Origin of manufacture:  Malaysia
Precision:  10 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

Compared with the original design of the BA-20 introduced in 1986 this later model lacks the switch to select between battery and solar cells operation. 

BA-20_1_Module.jpg (20657 Byte)The third generation of the BA-20 introduced in 1998 omitted the integrated clock.

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

Don't miss the rare TI-10 Profit Guide combining similiar functions in a much smaller housing.


The BA-20 Profit Manager is featured in the Texas Instruments Incorporated sales catalog CL-1233 dated 1994.


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If you have additions to the above article please email:

Joerg Woerner, December 25, 2001. No reprints without written permission.