DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
EDF calculator by Texas Instruments
| Date of introduction: | 1979 | Display technology: | LED-stick |
| New price: | Display size: | 10 + 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 |
| 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 novelity 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.
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 colourful calculator appeared with the Pool Water Analysis module.
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.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 5, 2005. No reprints without written permission.