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
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,
|Program steps:||480-0||Courtesy of:||Joerg Woerner|
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: email@example.com.
© Joerg Woerner, June 5, 2005. No reprints without written permission.