Eco Cal Scientific Calculator 991-ESEco Cal Scientific Calculator 991-ES
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Eco Cal Scientific Calculator 991-ES. Buy Best at Lelow Online

249

Eco Cal Scientific Calculator 991-ES

  • 38 Built-in scientific formula calculator.
  • 12 digits – 2-line display.
  • Dual Power.

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EAN: 5824898209919 SKU: EcoCal-991ES-01 Categories: , Tags: , Brand:

Description

Eco Cal Scientific Calculator 991-ES

The calculator comes with a look and trendy design with a tamper-proof case. Since the calculator has S.V.P.A.M (Super Visually Perfect Arithmetic Manipulation), it is able to give wonderful results. Here are some of its features.

Eco Cal Fx-991ES Scientific Calculator

Power Source Solar, Battery
Brand ECOCAL
Colour Black
Item Dimensions LxWxH 15.2 x 10.2 x 7.6 Centimeters

About Eco Cal Fx-991ES Scientific Calculator

Eco Cal Scientific Calculator 991-ES

  • 38 Built-in Formulas, as this is both scientific and formula calculator.
  • CONSTANT MEMORIES: There are 9 scientific function constants in the calculator4: Fraction Calculation, 5: Base N calculation, 6: Statistical Calculation
  • 7: Input Range of functions. 8: calculation Priority 9: Angle Unit Definition 10: scientific calculation
  • 12 digits – 2-line display. Dual Power. Both Solar Power and Double AA Battery.
  • Two Way Power both Solar and Battery (AA x 2 Battery)

Eco Cal Scientific Calculator 991-ES

scientific calculator fx-991es
scientific calculator fx-991es

The Keys: –With case sensitive keys, the calculator comes in very handy when it comes to quick calculation. The functions are printed in a crystal-clear fashion and this helps the user. The keys are strong and definitely durable.

Eco Cal Scientific Calculator 991-ES

Eco Cal-Scientific-Calculator-FX-991ES-fmla orange colour

     Functions: –The calculator is capable of doing all basic engineering functions. Some of them are given below.

  1. Trigonometric and inverse trigonometric.
  2. Hyperbolic functions,
  3. Standard deviation,
  4. Squares, Cubes and multiple powers,
  5. Square roots, Cube roots and multiple roots,
  6. Exponential and Basic Mathematics,
  7. Logarithmic conversions, Polar to base conversions etc.
  8. Permutations and Combinations
Eco cal scientific calculator fx-991es
Eco cal scientific calculator fx-991es
  1. Memory: –The Fx-991ES has considerable memory and commendable processing speed and accuracy. We can store 9 data items at a time and recall them whenever necessary. The term “Ans” stores the previous value and can be used for further calculations. Using the “Alpha” key, one can calculate problems on stored data with recalling them every time.

 

  1. Display: –This is the most attractive thing out here. We get a display of both the input and output, enabling us to know if we have committed some mistakes. If any error is found out, one can always correct it, using the “DEL” key. Also, the “Reply” key facilitates a look into the input data.

Eco Cal Scientific Calculator 991-ES

What this model Fx-991ES doesn’t have? This model has no stored data of universal constants. Moreover, it lacks the integration function. And it is not programmable. Other than this, I think, this calculator doesn’t lag behind any others.

Buy scientific calculator fx-991es online
Buy scientific calculator fx-991es online

 

With just an AA sized battery, the calculator has been running for more than two years now. So definitely it is energy efficient and durable. As far as the strength of the case is concerned, there is nothing to worry. I have dropped it a thousand times and not a scratch was traced under the electron microscope. Oh! Sorry!! That was a bit too much, but believe me, it’s really good.

Eco Cal Scientific Calculator 991-ES review

Finally, I can only say that if you have purchased an Fx-991ES model then you shouldn’t have any regrets. But if you are entering an engineering college and need to buy a “Calci” then do purchase this product. It is highly recommended from my side.

 

EAN; 5824898209919

Scientific calculator Fx-991 EX 

Eco Cal Scientific Calculator 991-ES

  • 38 Built-in Formulas, as this is both scientific and formula calculator. CONSTANT MEMORIES: There are 9 scientific function constants in the calculator4: Fraction Calculation, 5: Base N calculation, 6: Statistical Calculation. 7: Input Range of functions. 8: calculation Priority 9: Angle Unit Definition 10: scientific calculation. 12 digits – 2-line display. Dual Power. Both Solar Power and Double AA Battery.
  • Two Way Power both Solar and Battery (AA x 2 Battery), Eco Cal Scientific Calculator 991-ES

Additional information

Weight 0.250 kg
Dimensions 12 × 10 × 8 cm
Color

Blue, Orange

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