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Solar Logic Operation Science Calculator FX-991MS

Digg(194) ( 9 Reviews)
US $15.68

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Qty 2-4 5-9 ≥10
Price USD$ 15.21 USD$ 15.05 Wholesale Price >>
Shipping cost: Free Shipping To Shipping cost:   USD$ 0.00 To United states Via Estimate shipping fee
· Orders over USD$ 50.00 will get free tracking services via air mail
High quality with great performance, this Solar Logic Operation Science Calculator will surely give you more than you pai!Features convenient operation and humanization design, the logic operation solar calculator is a good helper for students, teacher and business man. The science solar calculator is with folding and compact design, easy to carry. The logic operation solar calculator is with a LCD display, easy and convenient to read! Made of high quality material, the logic operation solar calculator is durable and reliable for long time use! Practical and stylish, this logic operation solar calculator provides all you want to you! Do not miss it, you will like the way it works!
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Product Description

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  • Specifications:

    • 2-line display
    • Fraction calculations
    • Integration calculations
    • Combination and Permutation
    • Statistics(STAT-data editor, Standard deviation, Normal distribution calculations, Regression analysis)
    • Base-n calculations / conversions
    • Logical operations
    • Complex number calculations 
    • Two way power
    • 401 Functions / Dot Matrix /
    • 2-Line Display / 10+2 Digits / Plastic Keys
    • Multi-replay function , Matrix calculations , Equation calculations , Vector calculations , Differential
    • calculations , SOLVE function
    • CALC memory
    • Engineering symbol calculations
    • 40 scientific calculations
    • 40 metric conversions(20 conversion pairs)


    DeLi Solar Logic Operation Science Calculator FX-991MS

    • This science solar calculator is with large display, easy to read

    Solar Calculator

    • The logic operation solar calculator features easy readability and sophisticated technology

    Science Solar Calculator

    Logic Operation Solar Calculato

    • The logic operation solar calculator is the perfect tool to work and study 

    How to Use a Solar Power Calculator:

    DeLi Solar Logic Operation Science Calculator FX-991MS

    Nearly every basic calculator has a set of solar panels built into it. Even so, these calculators usually come with a battery inside that actually powers the device. These panels help extend the life of the calculator by slowly recharging the original battery. The manufacturer's intention is to make the calculator last long enough that it gets replaced for a reason other than the battery, often being dropped and broken.

    • Use most solar powered calculators like you would any other calculator; direct exposure to light typically doesn't matter
    • Recharge a battery powered calculator by leaving it in a bright location but out of direct sunlight
    • Recognize when you have a true solar calculator. The numbers will fade when the light is blocked and there will often be a noticeable lag between pushing a button and its appearance on a calculator. When using a true solar calculator operate it in a bright location but still out of direct sunlight
    • Clean off the panels occasionally to keep them working well. Dust, dirt and oils from your fingers can cause a significant amount of refraction, and the solar energy is lost. Wipe them off with a paper towel or even the end of a shirt, the plastic covering over the panels will protect them

    How Does a Solar Powered Calculator Work at Night:

    • The process - Many readers may remember sitting in biology class and learning about photo-synthesis. Photo-synthesis is the process where plant-life takes in the rays of the sun and essentially converts that into food or energy. The solar powered calculator works much in the same way in that instead of plant cells, the calculator has the solar panels which consist of solar cells or photoelectric cells. These cells accept the sunlight and, acting as batteries, stores the sun's light and converts it into electricity. This, when you use the calculator, instead of alternate battery current, you are using energy converted from sunlight
    • Night Ops - Fortunately, these cells can store an amazing amount of energy for their size. The drawback, like with a rechargeable battery, is that they must be recharged frequently. In this case the calculator needs to be in sunlight as often as possible in order to maintain a constant supply of electro-power

    Package Included:

    • 1 x Calculator

Customers' Reviews

  ( 9 Reviews)
Ease Of Use:

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I have bought this product

Frank Moore

Bought this item on

00:00:00 08-16-2011 so fast Overall:  
  • Other Thoughts: The product purchased was exactly what i paid for and I am excited to be able to get what I did so fast!

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Carole Van Camp

Bought this item on

00:00:00 07-28-2011 Great product Overall:  
  • Other Thoughts: Great product and a great seller. Item was shipped fast and came in great condition.

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Matthew Holdren

Bought this item on

00:00:00 07-28-2011 satisfied with this product Overall:  
  • Other Thoughts: I am very satisfied with this product. This item was very cheap, in great condition, and was shipped in a reasonable amount of time.

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Wayne Lucas

Bought this item on

00:00:00 07-26-2011 wonderful item Overall:  
  • Other Thoughts: It's a wonderful item, as expected, Arrived on time, Fast Shipping, Fantastic service, Great price, Great seller, THANKS.. I will deal with you more and more

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Brett Stewart

Bought this item on

00:00:00 07-20-2011 Great Calculator Overall:  
  • Other Thoughts: I love this Portable Solar Calculator. It is easy to use. It is just the right size. I have used other calculators and this one is by far my favorite.

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Eric Lauziere

Bought this item on

00:00:00 07-05-2011 Perfect Overall:  
  • Other Thoughts: All new and in great packaging. Also cheaper than every where else. Will buy again!

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Deanna Wiseman

Bought this item on

00:00:00 06-20-2011 Nice calculator Overall:  
  • Other Thoughts: Nice science solar calculator with large numbers,very easy to read. A little bigger then I expected. It is solar which makes it a real plus.

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John Silber

Bought this item on

00:00:00 06-15-2011 Great science solar calculator Overall:  
  • Other Thoughts: I've been using the logic operation solar calculator at work for years, and everybody keeps stealing them from me because they are great. They're great desk calculators with big numbers for quick, easy, and accurate entry and a -/+ key for entering negative numbers. Can't believe I'm writing a review for a calculator, but I really LOVE these.

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James Gavin

Bought this item on

00:00:00 06-06-2011 The Best calculator I ever owned Overall:  
  • Other Thoughts: This is a great calculator for any basic function. first saw it at my local bank. I liked it so much I had to have one of my own. It does not have a lot of bells and whistles but it does have a neat little tax rate function where you can enter any % and it will hold it into memory. I may purchase a second one in fear that it will go away at some point. <br/> <br/>It is dual powered and I never had a problem with the display in any type of lighting condition. <br/> <br/>It is well built and the keys are really responsive, resulting in near flawless entry everytime. <br/> <br/>for a simple everyay desktop calculator, this one is a winner !

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