DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
EDF calculator by Texas Instruments
| Date of introduction: | 1979 | Display technology: | LED-stick |
| New price: | Display size: | 10 (8 + 2) | |
| Size: | 6.4" x 3.2" x
1.5" 162 x 81 x 37 mm3 |
||
| Weight: | 8.5 ounces, 240 grams | Serial No: | 2378882 |
| Batteries: | BP1A | Date of manufacture: | wk 14 year 1980 |
| AC-Adapter: | AC9131 | Origin of manufacture: | Netherlands |
| Precision: | 13 | Integrated circuits: | TMC0501E,
TMC0582, TMC0583,
TMC0571, 2*TMC0598 TMC0540 (ZA5528) |
| Logic: | AOS - 8 Pending Operations, 9 () | ||
| Memories: | 0-60 | ||
| Program steps: | 480-0 | Courtesy of: | Joerg Woerner |
The
innovative TI-58 was the perfect base for a lot of
customized calculators. This one was used end of the 70th by the EDF
Group in France - a leading supplier of Electricity in Europe - to calculate the
necessary energy to heat rooms and houses.
The idea behind these products
was the novelty of the
Solid State Software Modules™ with up to 5000 program steps. This software was
written by the SW-engineers of the EDF SA company and programmed into the
modules by Texas Instruments.
The
customized keyboard hides most functions available on the standard TI-58 and
allows only access to the basic calculation functions and the programmed
functions of the EDF module.
Dismantling the calculator reveals a standard TI-58
calculator manufactured in April 1980.
An almost identical Energy Calculator was sold
by Sanilabel Belgium CV.
Compare it with a similar product by the insurance companies Agrippina, Allianz, LVM, Lloyd, Nordstern and Victoria or the CAL-Q-TAX calculator.
Another approach to customize a calculator could be found in the Goulds Pumpulator.
Tired from insurance calculators? View the USMC HARRIER calculator!
A colorful calculator appeared with the Pool Water Analysis module.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 5, 2005. No reprints without written permission.