Máy tính khoa học năng lượng mặt trời với LCD Notepad 417 chức năng Máy tính cầm tay chuyên nghiệp có thể gập lại cho học sinh được nâng cấp 991ES2026

 how to use the writing area NEWYES 6.5 inch Solar Scientific Calculator with LCD Notepad, 417 Functions, Professional Portable Foldable Calculator for Students, Teacher, Engineer, Upgraded 991ES, with a Pen IncludedAbout this item【Innovation】:Advanced idea of combining a calculator with an LCD notepad, There is a built in stylus to write with, which allows you to take notes while calculating. You can delete the notes by using the delete button, or you can lock it to save it.【417 Functions】: The calculator has all the buttons you find on a standard scientific calculator, is very versatile, and can be used for children or even math majors. It contains more operations than basic scientific calculator, including integrals, derivatives, statistics and complex number calculations, etc.【Foldable & Portable】NEWYES Calculator Notepad can fold up and the LCD doubles as a cover that closes to put away neatly when you no longer require it, that fits nicely in your pocket. this is ideal for students, engineers, teachers and professional researchers.【Solar panel + replaceable battery】the main screen is powered by solar where as the LCD requires a button cellCR2032) that's included.【Good Quality】NEWYES Scientific calculator is durable and has premium plastic keys which are more sensitive and precise compared to silicone keys.Well-Featured Science CalculatorThis science calculator is perfectly integrated with an additional lcd writing tablet, allowing students to write while calculating. The button of this calculator are made of plastic, which is more comfortable and more sensitive. The calculator base plate uses ultrasonic fusion technology, and the fit is super good. At the same time,solar calculator has dual-battery (solar and cell) , solar powered with a battery back up.Packing list: Scientific calculator; instruction manual.The tablet has a lifespan of more than 50,000 times.Size: 16.2cm1.75cm8.1cmBattery model: Cr2032.If you are looking for a multifunctional accounting calculator,this calculator will be your perfect choice!Features of the NEWYES Scientific Calculator Foldable & PortableFoldable protective case covers either side of the calculator. Protects buttons and the device body. Professional3-line display shows inputs and results at the same time.Professional grade scientific calculator with 417 scientific functions.Long lifetimeCalculator powered by Solar Energy and writing tablet powered by replaceable coin button battery CR2032.Writing with a styluswhen taking notes, you can find the pen on the bottom side of the calculator (as the picture shows)Easy to clearwhen you want to delete writing, you can using the clear button,one press to delete (as the picture shows)Prevent accidental deletionwhen you writing with the wirting tablet, using lock button to prevent deletion or unlock (as the picture shows).Ideal for junior & high school students, college students and professional researchers.The calculator for secondary school meets most of the mathematical needs of trigonometric functions, logarithms and antilogarithms, powers, factorials, permutations, combinations, statistics, angles, coordinates, etc.this calculator is the perfect birthday, valentine, christmas gift for students, teachers, professors, kids, friends, parents!