Texas Instruments BA Real Estate

Date of introduction:  1996 Display technology:  LCD
New price:  ($39.99 in 2003) Display size:  3 + 10 (7 + 2)
Size:  5.9" x 3.0" x 0.50"    
Weight:  2.9 ounces Serial No:  
Batteries:  2*LR44 Date of manufacture:  mth 04 year 1997
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  13 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

BA_RealEstate_P1.jpg (311544 Byte)Texas Instruments changed in 1996 the design of the scientific calculators to a smoother design. The family covers:

TI-30Xa Solar
TI-36X Solar   Includes 2-dim statistics, conversions and binary/hexadecimal number bases

Within this family two financial calculators were introduced:

BA Real Estate
BA-35 Solar

RealEstate_PCB.jpg (74842 Byte)BA_RealEstate_Back.jpg (224110 Byte)Together with the new design of the calculators the "chip-on-board" or COB-technology was introduced in the manufacturing process. We know this technology already from the PS-2100 Databank introduced in 1992. The calculator chip is attached direct on the printed circuit board and connected with small bond-wires. A small blob of epoxy resin on top finishes the construction.

The first generation of the BA Real Estate was introduced already in 1993.

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If you have additions to the above article please email:

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