DATAMATH CALCULATOR MUSEUM
Texas Instruments BA Real Estate
|Date of introduction:||1993||Display technology:||LCD|
|New price:||Display size:||3 + 10 (7 + 2)|
|Size:||5.7" x 2.8" x 0.45"|
|Weight:||2.9 ounces||Serial No:|
|Batteries:||2*LR44||Date of manufacture:||mth 07 year 1993|
|AC-Adapter:||Origin of manufacture:||Italy|
|Precision:||13||Integrated circuits:||Toshiba T6M51|
|Program steps:||Courtesy of:||Joerg Woerner|
In 1993 Texas Instruments introduced a new design that replaced both the TI-68 look of the earlier TI-35X and the boxy design of the TI-30 Stat calculator.
The smooth shape together with rubber-like keys was used with 5 different calculators:
BA Real Estate Financial calculations
|• TI-30X New display with 10 + 2 digits, 3 memories
• TI-30X SOLAR With Anylite solar-cells
• TI-35X Adds 2-dim statistics and hex-calculations
• TI-36X SOLAR With Anylite solar-cells
The internal construction of these calculators is identical and based on a flexible printed circuit board (Flex-PCB) for the keyboard and a Rigid-PCB for the display and calculator chip in a conventional Flat-pack housing.
This design approach creates a lot of interconnections between
the comonents but the
calculator line was one of the most reliable designs of Texas Instruments ever.
The BA Real State does:
|• Quickly computes principal and interest payment amounts
• Computes buyer qualification for both income and loan amount
• Accepts qualifying ratio values based on local rates to computer the buyer qualifications
• Calculates PITI (principal, interest, taxes, and insurance)
• Computes ARMs, bi-weekly payments, Canadian mortgages
• Solves time-value-of-money calculations
• Generates amortization schedules with an automatic incrementing feature
• Converts between nominal (NOM) and effective (EFF) interest rates
• Includes 32 worksheets for use with clients and to practice calculator skills
In 1996 the design of these calculators was changed again. View the updated BA Real Estate here.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.