<p><img alt="Desktop Type" src="https://www.casio-intl.com/blob/image/1425477622539/" /></p> <p>Desktop Type</p> <p><img alt="DIGIT" src="https://www.casio-intl.com/blob/image/1425458217439/" /></p> <p>12 digits</p> <h2>Features</h2> <p><a id="features" name="features"></a></p> <h3>300 Steps Check</h3> <p>Review and Auto Review</p> <p>Review up to 300 calculation steps.</p> <p><img alt="Example" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_step01.jpg" style="height:90px; width:560px" /></p> <p><img alt="Review" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_step02.jpg" style="height:110px; width:560px" /></p> <p><img alt="Auto Review" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_Key_auto-review.jpg" style="height:40px; width:60px" /></p> <p>Auto Review by pressing one single button!</p> <p><img alt="Correct" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_Key_correct.jpg" style="height:40px; width:60px" /></p> <p>While reviewing a calculation, you can make changes in values and operators and re-execute to obtain a new result.</p> <p>*&nbsp;The LCD examples are from an DJ-120D Plus.</p> <p>Go to</p> <p><img alt="Auto Review" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_Key_goto.jpg" style="height:40px; width:60px" /></p> <p>Jump to a particular calculation step by pressing one single button.</p> <p>Grand total</p> <p><img alt="GT" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_Key_gt.jpg" style="height:40px; width:60px" /></p> <p>Automatic totalization of the results of different calculations.</p> <h3>Recheck function</h3> <p>Recheck with Sound Assist</p> <p>The recheck function allows confirmation of errors by sound when checking calculations. If the user presses an incorrect key when performing a second calculation to check calculation results, a buzzer sounds to alert the user of the error.</p> <p><img alt="Recheck with Sound Assist" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_recheck01.jpg" style="height:200px; width:270px" /></p> <p>First calculation</p> <p><img alt="First calculation" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_recheck02.jpg" style="height:420px; width:560px" /></p> <p>Second calculation</p> <p><img alt="Second calculation" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_recheck03.jpg" style="height:420px; width:560px" /></p> <p>*&nbsp;The LCD icons are shown enlarged for easier viewing.</p> <p>*&nbsp;The LCD examples are from an DJ-120D Plus.</p> <h3>Localized Number Display</h3> <p>One-touch switching between digit separator formats</p> <p><img alt="Recheck with Sound Assist" src="https://www.casio-intl.com/media/cal/images/practical/check/cal_check_localized01.jpg" style="height:210px; width:270px" /></p> <p>*&nbsp;The LCD examples are from an DJ-120D Plus.</p> <h2>Specifications</h2> <ul> <li> <p><img alt="Desktop Type" src="https://www.casio-intl.com/blob/image/1425477622539/" /></p> <p>Desktop Type</p> <hr /></li> <li> <p><img alt="DIGIT" src="https://www.casio-intl.com/blob/image/1425458217439/" /></p> <p>12 digits</p> <hr /></li> <li> <p><img alt="Regular percent" src="https://www.casio-intl.com/blob/image/1425458244103/" /></p> <p>Regular percentRegular percentage calculations.</p> <hr /></li> <li> <p><img alt="300 steps check" src="https://www.casio-intl.com/blob/image/1425458208526/" /></p> <p>300 steps checkDisplays up to 300 previous calculation steps.</p> <hr /></li> <li> <p><img alt="Recheck function" src="https://www.casio-intl.com/blob/image/1425458211218/" /></p> <p>Recheck functionThe recheck function allows confirmation of errors by sound when checking calculations. If the user presses an incorrect key when performing a second calculation to check calculation results, a buzzer sounds to alert the user of the error.</p> <hr /></li> </ul> <ul> <li> <p><img alt="Solar &amp; Battery" src="https://www.casio-intl.com/blob/image/1425458225867/" /></p> <p>Solar &amp; BatterySolar powered when light is sufficient, battery powered when light is insufficient.</p> <hr /></li> <li> <p><img alt="UV-coated durable keys" src="https://www.casio-intl.com/blob/image/1425585225770/" /></p> <p>UV-coated durable keysDurable key printings with UV-coating.</p> <hr /></li> <li> <p><img alt="Function command signs" src="https://www.casio-intl.com/blob/image/1425458304791/" /></p> <p>Function command signsA symbol (+, -, &times;, &divide;) on the display indicates the status of operation you are currently performing.</p> <hr /></li> <li> <p>Rounding selectorF: Floating decimals. CUT: Values are cut off. UP: Values are rounded up. 5/4: Values are rounded off.</p> <hr /></li> <li> <p>Decimal selector4,3,2,1,0 : Specifies the number of decimal places as 4,3,2,1,0. ADD2: 2 decimal places are assumed for entries and results of all addition and subtraction operations.</p> <hr /></li> <li> <p><img alt="Key rollover" src="https://www.casio-intl.com/blob/image/1425458228883/" /></p> <p>Key rolloverKey operations are stored in a buffer, so nothing is lost even during high-speed input.</p> <hr /></li> <li> <p><img alt="Extra Large display" src="https://www.casio-intl.com/blob/image/1425458222451/" /></p> <p>Extra Large displayLarger display makes more data easier to read.</p> <hr /></li> <li> <p><img alt="Plastic keys" src="https://www.casio-intl.com/blob/image/1425458303287/" /></p> <p>Plastic keysDesigned and engineered for easy operation.</p> <hr /></li> <li> <p><img alt="Mark-up" src="https://www.casio-intl.com/blob/image/1425458244769/" /></p> <p>Mark-upAll the mark-up capabilities of an adding machine for simplified cost and profit calculations.</p> <hr /></li> <li> <p><img alt="Localized number display" src="https://www.casio-intl.com/blob/image/1425458256201/" /></p> <p>Localized number displayDisplays numbers in four digit separator formats(Type A, Type B, Type C and Indian).</p> <hr /></li> </ul> <p>Close</p> <h3>Size of case / Total weight</h3> <ul> <li>Dimensions (D &times; W &times; H) : 192&times;144&times;34.6mm</li> <li>Weight : 205g</li> </ul>

<h2>Specifications</h2> <ul> <li> <p><img alt="DIGIT" src="https://www.casio-intl.com/blob/image/1425458217439/" /></p> <p>12 digits</p> <hr /></li> <li> <p><img alt="Regular percent" src="https://www.casio-intl.com/blob/image/1425458244103/" /></p> <p>Regular percentRegular percentage calculations.</p> <hr /></li> <li> <p><img alt="150 steps check" src="https://www.casio-intl.com/blob/image/1425458253971/" /></p> <p>150 steps checkDisplays up to 150 previous calculation steps.</p> <hr /></li> <li> <p><img alt="Tax calculation" src="https://www.casio-intl.com/blob/image/1425458235479/" /></p> <p>Tax calculationAutomatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount.</p> <hr /></li> <li> <p><img alt="Solar &amp; Battery" src="https://www.casio-intl.com/blob/image/1425458225867/" /></p> <p>Solar &amp; BatterySolar powered when light is sufficient, battery powered when light is insufficient.</p> <hr /></li> </ul> <ul> <li> <p><img alt="Function command signs" src="https://www.casio-intl.com/blob/image/1425458304791/" /></p> <p>Function command signsA symbol (+, -, &times;, &divide;) on the display indicates the status of operation you are currently performing.</p> <hr /></li> <li> <p><img alt="Key rollover" src="https://www.casio-intl.com/blob/image/1425458228883/" /></p> <p>Key rolloverKey operations are stored in a buffer, so nothing is lost even during high-speed input.</p> <hr /></li> <li> <p><img alt="Extra Large display" src="https://www.casio-intl.com/blob/image/1425458222451/" /></p> <p>Extra Large displayLarger display makes more data easier to read.</p> <hr /></li> <li> <p><img alt="Plastic keys" src="https://www.casio-intl.com/blob/image/1425458303287/" /></p> <p>Plastic keysDesigned and engineered for easy operation.</p> <hr /></li> <li> <p><img alt="Mark-up" src="https://www.casio-intl.com/blob/image/1425458244769/" /></p> <p>Mark-upAll the mark-up capabilities of an adding machine for simplified cost and profit calculations.</p> <hr /></li> <li> <p><img alt="Localized number display" src="https://www.casio-intl.com/blob/image/1425458256201/" /></p> <p>Localized number displayDisplays numbers in four digit separator formats(Type A, Type B, Type C and Indian).</p> <hr /></li> </ul> <p>Close</p> <h3>Size of case / Total weight</h3> <ul> <li>Dimensions (D &times; W &times; H) : 140&times;123&times;30.1mm</li> </ul>

<h2>Features</h2> <h3>Simple and easy to use</h3> <p>Optimal education tools realized through s design that emphasizes comfort in the hand, legibility, and usability through the pursuit of simplicity</p> <h3>Natural Textbook Display</h3> <p>Features Natural Textbook Display format for displaying equations and calculation result just as they appear in textbooks</p> <h3>Authentic quality</h3> <p>Excellent quality and authentication ensure confidence and peace of mind for use in educational settings</p> <h3>Main functions</h3> <ul> <li>Random integers</li> <li>Fraction calculations</li> <li>Combination and permutation</li> <li>Statistics (List-based STAT data editor, standard deviation, regression analysis)</li> <li>9 variables</li> <li>Table function</li> <li>Comes with new slide-on hard case</li> <li>Equation calculations</li> <li>Integration/differential calculations</li> <li>Matrix calculations</li> <li>Vector calculations</li> <li>Complex number calculations</li> <li>CALC function</li> <li>SOLVE function</li> <li>Base-n&nbsp;calculation</li> </ul> <p>Integration</p> <p><img alt="Integration" src="https://www.casio-intl.com/media/cal/images/scientific/ntd/fx991esplus/img01.gif" style="height:70px; width:170px" /></p> <p>Complex number calculations</p> <p><img alt="Complex number calculations" src="https://www.casio-intl.com/media/cal/images/scientific/ntd/fx991esplus/img02.gif" style="height:70px; width:170px" /></p> <p>Differential</p> <p><img alt="Differential" src="https://www.casio-intl.com/media/cal/images/scientific/ntd/fx991esplus/img03.gif" style="height:70px; width:170px" /></p> <p>Vector</p> <p><img alt="Vector" src="https://www.casio-intl.com/media/cal/images/scientific/ntd/fx991esplus/img04.gif" style="height:70px; width:170px" /></p> <p>Matrix operations</p> <p><img alt="Matrix operations" src="https://www.casio-intl.com/media/cal/images/scientific/ntd/fx991esplus/img05.gif" style="height:70px; width:355px" /></p> <p><a href="http://edu.casio.com/products/ntd/fx991es_2/">Learn More&nbsp;</a></p> <h2>Specifications</h2> <ul> <li> <p>Non Programmable</p> <hr /></li> <li> <p><img alt="Number of Functions : 417" src="https://www.casio-intl.com/blob/image/1425495929677/" /></p> <p>Number of Functions : 417</p> <hr /></li> <li> <p><img alt="Natural textbook display" src="https://www.casio-intl.com/blob/image/1425458266995/" /></p> <p>Natural textbook displayDisplay expression same as textbook.</p> <hr /></li> <li> <p><img alt="DIGIT" src="https://www.casio-intl.com/blob/image/1425458276521/" /></p> <p>10 + 2 digits10-digit mantissa + 2-digit exponential display.</p> <hr /></li> <li> <p><img alt="Dot matrix display" src="https://www.casio-intl.com/blob/image/1425458280229/" /></p> <p>Dot matrix displayHigh-resolution screen provides beautiful looking graphs every time.</p> <hr /></li> </ul> <ul> <li> <p><img alt="Multi-replay" src="https://www.casio-intl.com/blob/image/1425458276055/" /></p> <p>Multi-replayQuick and easy recall of previously executed formulas for editing and re-execution.</p> <hr /></li> <li> <p><img alt="Solar &amp; Battery" src="https://www.casio-intl.com/blob/image/1425458225867/" /></p> <p>Solar &amp; BatterySolar powered when light is sufficient, battery powered when light is insufficient.</p> <hr /></li> <li> <p><img alt="Plastic keys" src="https://www.casio-intl.com/blob/image/1425458303287/" /></p> <p>Plastic keysDesigned and engineered for easy operation.</p> <hr /></li> <li> <p>Basic Mathematical FunctionsTrigonometric, Exponential logarithmic, etc.</p> <hr /></li> <li> <p>Table GenerationYou can create a numerical table based on that expression by registering a function expression. In addition, graph functions can be represented by graphs.</p> <hr /></li> <li> <p>Base-n calculationBinary/Octal/Hexadecimal</p> <hr /></li> <li> <p>Scientific ConstantsYou can use constant symbols used in physics, science classes.</p> <hr /></li> <li> <p>Vector</p> <hr /></li> <li> <p><img alt="List based STAT-data editor" src="https://www.casio-intl.com/blob/image/1425458273763/" /></p> <p>List based STAT-data editorViewing and editing of input data in list format, showing data groups (x-data, y-data, frequency) and surrounding data.</p> <hr /></li> <li> <p>Basic StatisticsStandard statistics functions such as Mean, SUM, Standard Deviation, and Regression</p> <hr /></li> <li> <p>Non Graphing</p> <hr /></li> <li> <p>Differentiation</p> <hr /></li> <li> <p>Matrix</p> <hr /></li> <li> <p>Equation</p> <hr /></li> <li> <p>Integration</p> <hr /></li> <li> <p><img alt="Metric conversion function" src="https://www.casio-intl.com/blob/image/1425458297901/" /></p> <p>Metric conversion functionYou can convert a number in one unit to a number in a different unit.</p> <hr /></li> <li> <p>Complex number calculation</p> <hr /></li> </ul> <p>Close</p> <h3>Size of case / Total weight</h3> <ul> <li>Dimensions (D &times; W &times; H) : 161.5&times;77&times;11.1mm</li> <li>Weight : 95g</li> </ul>