Texas Instruments Financial Investment Analyst FIA-10

Date of introduction:  1989 Display technology:  LCD multi segment
New price:   Display size:  3+12 * 6 lines
Size:  6.8" x 3.1" x 0.6"    
Weight:  6.0 ounces Serial No:  35319
Batteries:  2*CR2032 Date of manufacture:  wk 26 year 1989
AC-Adapter:   Origin of manufacture:  Italy
Precision:  13 Integrated circuits:  TMC70035, LH5821, TC5518, TC54256
Memories:  10    
Program steps:   Courtesy of:  Joerg Woerner
Download leaflet:   (DE: 1.2 MByte) Download manual:   (US: 1.78 MByte)

With the Financial Investment Analyst FIA-10 and the Business Edge introduced Texas Instruments in 1989 two exceptional Financial calculators. Compared with the former Business Analyst BA-II the FIA-10 uses a huge, alphanumerical display and seperate function keys to interact with the user. In most calculations all results and variables are visible simultaneously and like a spreadsheet on the personal computer you can change one value and observe the new results. In fact the FIA-10 is based on internal spreadsheet calculations called worksheets and uses a 8-bit hardware architecture similar to the TI-74 Basicalc and TI-95 Procalc instead the traditional 4-bit calculator chips of a BA-54

FIA-10_PCB.jpg (119082 Byte)FIA_Back.jpg (304284 Byte)The hardware is based on a 8-bit TMS7000 microcontroller supported by a 2k*8 RAM (TC5518), 32k*8 ROM (TC54256) and a LCD-controller (LH5821). The same hardware architecture with increased RAM and a changed program in the ROM was used with the Fixed Income Securities calculator.

The software of the FIA-10 supports 10 different worksheets to solve specific types of problems:

WS Title and function of the worksheet
#1 The Time Value of Money / Amortization worksheet analyzes equal cash flows, such as annuities, and generates an amortization schedule. 
#2 The Cash Flow worksheet analyzes unequal cash flows; the worksheet calculates net present value, net future value, and internal rate of return.
#3 The Bond Calculations worksheet calculates yield and price of a bond.
#4 The Depreciation worksheet lets you generate a depreciation schedule using one of several depreciation methods.
#5 The Statistics worksheet performs statistical analyses on one-variable and two-variable data, including linear regression models.
#6 The Interest Conversions worksheet converts interest rates between annual percentage rate (APR) and annual effective rate (AER).
#7 The Percent Change worksheet calculates the percent difference between two values. 
#8 The Profit Calculation worksheet calculates cost, selling price, margin, or markup.
#9 The Date Calculation worksheet finds the number of days between two dates, or finds a date that is a specified number of days from a given date.
#10 The Memory worksheet provides a visible storage area for as many as 10 values. You can display five of the values at a time.

The FIA-10 could be called the missing link between traditional, line orientated calculators like the BA-II Plus and the new Graphing calculators started with the TI-81.

If you are interested in the Flight calculators (avstar, prostar) manufactured by Texas Instruments for Jeppesen Sanderson, Inc. you'll ask: Why no product based on this FIA-10 ? The huge display and the function keys would give a perfect product. Jeppesen Sanderson was indeed inspirated from the FIA-10 but the product was developed elsewhere. View the wonderful result here.

The Financial Investment Analyst FIA-10 is featured in the Texas Instruments Deutschland GmbH bulletin ECD067 dated 1989.

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If you have additions to the above article please email:

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