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

    Casio FX991ES Scientific Calculator  (12 Digit)

    4.9
    209 Ratings & 36 Reviews
    Price: Not Available
    Currently Unavailable
    Highlights
    • Scientific Calcualtor
    • 12 Digits Display
    • Powered By Battery and Solar
    Services
      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 and Reviews
      4.9
      209 Ratings &
      36 Reviews
      • 5
         192
      • 4
         16
      • 3
         0
      • 2
         0
      • 1
         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

      Certified Buyer

      11 Dec, 2011

      16
      3
      Report Abuse
      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

      Certified Buyer

      23 Nov, 2011

      9
      2
      Report Abuse
      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

      3 May, 2012

      4
      0
      Report Abuse
      5

      Amaizing

      Best calculator i have ever used. natural notebook dishplay makes easy to write fraction,solution of equations, matrix,integration, differentiation etc.
      user friendly platform
      it has memory to store values
      must buy
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      Ashok sahu

      Certified Buyer

      22 Nov, 2011

      4
      0
      Report Abuse
      5

      Paisa Vasool

      I've been using this calculator for 2 years and had no issues with it so far. It is an excellent product from casio.
      Pros-
      1. textbook display which makes entering fractions very easy.
      2. flexible matrix operations.
      3. conversion tables provided on the cover panel.

      Cons-
      1. Takes time while calculating complex equations. Especially while solving interpolation problems and numerical integration (taylor series, simpsons' rules etc.)
      2. max order of the matrix is 3x3.
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      Vamsi Chivukula

      Certified Buyer

      4 May, 2012

      3
      0
      Report Abuse
      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

      Certified Buyer

      5 Aug, 2012

      1
      0
      Report Abuse
      5

      extremely useful

      purchased this item 2 weeks ago. working fine. the solar charge pannel is really good. no tension for changing the battery. best buy for engineers & technical students. key buttons are hard plastick made & rigid. good stuff overall.
      READ MORE

      Biplab Roy

      Certified Buyer

      28 Apr, 2012

      1
      0
      Report Abuse
      5

      Best for Engineer..!!!

      One of the best calculator in the current market for engineers and I'll give 5 out of 5...!!!
      It has enough functions which assist in your examination..!!!
      But some of the university and colleges doesn't allow this series calculator in exam..!!!
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      Pratik Patel

      Certified Buyer

      1 Mar, 2012

      1
      0
      Report Abuse
      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

      Certified Buyer

      25 Feb, 2012

      1
      0
      Report Abuse
      5

      the one for engg students

      i have used this calc for the past 3 years...really amazing one...it has easy to use functions like equations,matrices,solve func this makes engg calculations piece of cake....a definite must buy product
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      Adithya kalliath

      Certified Buyer

      29 Dec, 2011

      0
      0
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