Casio FX991ES FX991ES Scientific  Calculator
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Casio FX991ES FX991ES Scientific Calculator  (12 Digit)

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Highlights
  • Scientific Calculator
  • 12 Digits Display
  • Powered By: Battery and Solar
  • Model Name : FX991ES
Description

Casio Calculators provide quick and easy results and are widely used by businessmen and students around the world. The Casio FX991ES is a scientific calculator with a Full Dot Matrix Natural Textbook Display. The screen is wide and spacious and this calculator has plastic keys, which are designed and engineered for easy operation.

Body and Power

The Casio FX991ES has multiple abilities and is capable of performing 403 functions in all. This calculator has a 10-digit mantissa + 2-digit exponential display with an AAA size R03 battery.

Complex mathematical calculations such as integration, differential equations, matrix and vector calculations, complex number calculation, CALC function, SOLVE function, base-n calculation. Sin, cos and tan functions help solve geometrical problems easily at the click of a few buttons.

Intricate steps to obtain results for other algebraic conversations such as fractions, permutation and combination, standard deviation, table function etc. can be avoided since the user-friendly built of this Casio Calculator makes it easy to get quick results to these operations. Market researchers, data collectors and data analysts can easily carry out paired -variable statistics regression analysis, standard deviation and other operations related to organized collection and preservation of data using this Casio FX991ES. The List-based STAT data editor makes viewing and editing of input data in list format and shows data groups with x-data, y-data and frequency and surrounding data.

The Multi-replay function makes it easy to obtain quick and easy recall of previously executed formulas for editing and re-execution. The Dot Matrix Display features a high-resolution screen, providing beautiful looking graphs every time.

Logarithmic log, table function and logical operations make calculations easy, quick and convenient. This Casio Calculator has 40 stored scientific constants, which come into effect while carrying out these calculations. Data and information is stored on 9 variable memories and there are 20 pairs of metric conversions available.

The two way power system is capable of using battery as well as solar power for the calculator thus making optimum usage. This Casio Calculator comes with a new slide on hard case, which makes working on the calculator convenient and protects it from scratches and other impacts.

With its wide variety of features and specifications, this Casio FX991ES is used extensively by students and other professionals in course of their daily routine. The user-friendly and budget-friendly nature of this Casio Scientific Calculator makes it a good buy.

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Specifications
Brand Name
  • Casio
Model No
  • FX991ES
Type
  • Scientific
Display (Digits)
  • 12
Power Source
  • Battery and Solar
Ratings & Reviews
4.9
208 Ratings &
36 Reviews
  • 5
  • 4
  • 3
  • 2
  • 1
  • 191
  • 16
  • 0
  • 0
  • 1
5

991ES is gr8 calc for engg. students .... its a steal at this price

I have been using the Casio FX991ES for the past 4 yrs. Its a gr8 device for engg. students. The greatest feature is the natural notebook display which allows the user to write fractions and functions in a natural manner.
For just 100-150 bucks more than the 991MS model its a significant improvement with more memory, larger display, gr8tr function(ex:log10 and u can store stat tables) and easy and quick operations (very helpful during exams).
Bottomline: go for it !!!!
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Debarun Majumdar

Dec, 2011

17
4
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5

Best for Engineering students

I felt that it is the best klc for engineering students @ very affordable price with trust of flipkart.
Its operations are user friendly & provides much graphical interface.
I bought it 4 years before @ 620/-
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Saurabh Sinha

Nov, 2011

9
2
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5

Worth the money.

Now of course Flipkart is always the best! I've been a regular customer and never have they let me down. Rock bottom prices and lightning speed deliveries!

The Casio FX991ES is master piece. Once you start using it to the max, you realize that the returns are many times higher than what you paid to buy it!

The natural number display, the plethora of functions and the smooth finish of the product make you a proud owner of one of the finest pieces of technology.

Must have for most of the stu...
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Vivek Todi

Certified Buyer

May, 2012

4
0
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5

An Engineer's life depends on how well his calculator works.

This calculator is like a perpetual motion machine. It never needs a battery! (Although I did get the battery that came with it after six months of purchase). Since then, There has been no battery issue. In first six months of Engineering, we don't use the calculator that much, but the battery needed to be replaced. But after that, I have been using it extensively (to the point of doing calculations like 15+7=22 :P along with the engineering functions

The most useful functions for engineerin...
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VamsiMohanKrishna Vadrevu

Aug, 2012

1
0
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5

this product is so good

this product is good but this product price is high in my nearer shop. this product is useful of the all engineering students. this calculator is use of to matrix multiplication and matrix diterminets and this products is so good for all engineering students.
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shihora hardik

Feb, 2012

1
0
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5

Serves the purpose, too good for me!!

Flipkart's best service and Casio's best product quality.
I bought this for my examination purpose, and this is the highest programmable calculator they had allowed into exam hall that time.

But this calculator has more functionality and its predecessor FX900. Worth the price !!
A satisfied customer :)
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Sheshadri T R

Certified Buyer

Dec, 2013

0
0
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5

Best in class

this is the best calculator an engineer as well a CA aspirant can have..I had a MS990 earlier but when I got this I got amazed of the display. the double line display is good..and the keys are the best in its catagory
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AVINASH KUMBHAR

Certified Buyer

Aug, 2012

0
0
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5

Awesome is the only word for the complete package

5 start fro the product and for the service provider. Cheaper that anywhere in India. A genuine product will all papers. Unfortunately, the educators in India do not allow usage of these devices in school or collages. They think students will learn the best by doing never-ending manual calculations rather than consolidating on the conceptual knowledge. Buy this before it vanishes from stock.
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S. Chatterjee

Certified Buyer

Aug, 2012

0
0
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5

It's Genuine!!

I ordered this with Cash-On-Delivery option and it got delivered exactly 5 days later, as promised. The calculator is brand new & 100% genuine. It's stupendous, with it's natural display, which is larger than it's 991MS counterpart. Also it calculates complicated equations faster than than the latter. If you're going to buy a scientific calculator for engineering and don't mind spending 100 bucks more for superior performance, I would recommend you to buy this one. Kudos to Flipkart!
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Dheeraj Hegde

Certified Buyer

Jul, 2012

0
0
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5

A MASTER PIECE

No cons,only pros.The best non programmable scientific calculator you can imagine which is allowed in examination halls.It is easy to use and has lots of functions to ensure that you get the right thing at the right time.excellent power supply and really fast processing power is equipped with it to let you perform uninterruptedly.from the soft keys to the smooth,durable body,everything is just flawless.A TRUE CASIO PRODUCT!!!Hesitate no more.If you are gonna spend your money on a calculator,t...
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Arnab De

Certified Buyer

Jul, 2012

0
0
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All 36 reviews
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