Calculatrice scientifique rechargeable CalcNote 991ES MAX avec écran multi-vues 4 lignes, tablette d'écriture LCD et bloc-notes pliable

Scientific Calculators for Students 991ES Office Calculators Desktop, ROATEE 4-Line Display Calculator with Erasable LCD Writing Tablet, Solar Battery Power with Notepad Calculator for School About this item: 991ES Multifunctional Scientific Calculators: ROATEE business calculator features 417 functions, deal For: General math and science, Pre-Algebra, Algebra 1 and 2, Geometry, Statistics and regressioncal culations, Calculus, fractions, decimals, Calculations involving specificnumber systems (BASE-N, binary,octal, decimal,hexadecimal), Complex number calculations, EQN, Matrix calculations, TABLE, VECTOR, SOLVE, Biology, Chemistry so on and it has memory function calculation more user-friendly Scientific Calculators with Notepad: This scientific calculators for school and business intergrates calculation and notebook with a stylus pen. The lcd writing tablet enables you to take notes during the calculation, which do great help for study and work. NOTE!Only Unlock the LOCK KEY will the writing area and the erase button work Multiview: display shows 4 calculations at the same time on screen, greatly improves computational efficiency Dual Power Solar Panel & Coin Battery: The replaceble coin battery is built in this scientific calculators. It is also powered by solar energy so you don't need to worry about battery depletion Anti-Drop Body with High Durability and Portable: The body of this scientific calculators undergoes rigorous quality tests. Due to the design of anti-drop body, no need to worry about the damage by accidentally falling and it has only weighs 5 ounces can be easily put in your pocket, which is convenient for business and it is a popular back to school supplies at the beginning of the school year What Will You Get?: 991ES scientific calculators*1,instructions*1,exquisite packing box*1,packing case*1. Q: How to take the pen out? A: The pen is built in the left lower corner of the calculator,you can slide it out.Please NOTE：It might be a little tight to take it out at the first time. Q: How to clear up the writing tablet? A: Turn the button to the unlocked position, so you can erase the notes on the screen by pressing the clear button. Q: How do you change the setting from fractions to obtain a decimal answer? A: You can change the results through the key 'S⇔D'; Or you can configure calculator setting: 1. Press the button 'SHIFT'. 2. Press the button 'MODE'. 3. Choose 1 or 2 to set the mode of fraction or decimal. MthIO for fraction, LineIO for decimal.