Texas Instruments BA-45 Micro Business Manager

Date of introduction:  1984 Display technology:  LCD
New price:   Display size:  10
Size:  6.1" x 2.9" x 1.0"
 155 x 74 x 25 mm3
Printer technology:  Thermal TP-25000
Weight:  4,8 ounces, 136 grams Serial No:  131733
Batteries:  4*AAA Date of manufacture:  mth 12 year 1984
AC-Adapter:   Origin of manufacture:  Japan
Precision:  10 Integrated circuits:  NEC upD7503, Toshiba T6869
Memories:  1    
Program steps:  44 Courtesy of:  Joerg Woerner
    Download manual:   (US: 3.3 MByte)

BA-45MBM_PCB.jpg (301269 Byte)BA-45MBM_Back.jpg (152231 Byte)The BA-45 Micro Business Manager was one of the nice applications of the miniaturized printing technologies introduced with the TI-5000. The calculating capabilities of this 4-bit microcontroller (uPD7500 series) are less than a BA-II. A similar product was launched with the TI-45 Micro Scientific Printer.

If you need more powerful financial functions and like a alphanumeric prompting you should go for the Canon Financial Printer.

The only serious desktop printing calculator developed for financial applications was introduced already in 1983 with the rare TI-5310.

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