Texas Instruments BA-55 Professional Business Analyst

Date of introduction:  1983 Display technology:  LCD
New price:   Display size:  8 (5 + 2)
Size:  5.8" x 3.1" x 0.90"
 147 x 79 x 23 mm3
Weight:  3.7 ounces, 106 grams Serial No:  249330
Batteries:  2*LR44 Date of manufacture:  wk 17 year 1983
AC-Adapter:   Origin of manufacture:  USA
Precision:  11 Integrated circuits:  TP0456/CD4553, CD4554
Memories:  5-0    
Program steps:  0-40 Courtesy of:  Joerg Woerner
    Download manuals:   (PT: 3.5M Bytes)

In most generations of TI calculators you will find a product optimized for financial/business calculations based on a scientific product. Compare for example the following product pairs:

SR-40 and Business Analyst
TI-50 and Business Analyst-II
TI-55-II and this BA-55

The BA-55 could be called a financial calculator with limited programmability, you can store up to 40 keystrokes in the memories. Important to mention a rather unusual feature of this calculator, you could use the serial printer PC-200 known from the TI-66 PROGRAMMABLE calculator.

The BA-55 was later replaced within the second generation of the slanted line with the BA-54.


The BA-55 Professional Business Analyst is featured in the Texas Instruments Incorporated leaflet CL-199M dated 1983.


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If you have additions to the above article please email:

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