Sharp EL-6990 operation manual

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NOTICE

•SHARP strongly recommends that separate permanent written records be kept of all important data. Data may be lost or altered in virtually any electronic memory product under certain circumstances. Therefore, SHARP assumes no responsibility for data lost or otherwise rendered unusable whether as a result of improper use, repairs, defects, battery replacement, use after the specified battery life has expired, or any other cause.

•SHARP assumes no responsibility, directly or indirectly, for financial losses or claims from third persons resulting from the use of this product and any of its functions, such as stolen credit card numbers, the loss of or alteration of stored data, etc.

•The information provided in this manual is subject to change without notice.

CAUTIONS

•Do not carry the Organizer in the back pocket of slacks or trousers.

•Do not drop the Organizer or apply excessive force to it.

•Do not subject the Organizer to extreme temperatures.

•Since this product is not waterproof, do not use it or store it where fluids can splash onto it. Raindrops, water spray, juice, coffee, steam, perspiration, etc. will also cause malfunction.

•Clean only with a soft, dry cloth.

•Use only a SHARP approved service facility.

NOTES

• All company and/or product names are trademarks and/or registered trademarks of their respective manufactures.

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Contents EL-6990 Page Using the Organizer for the First Time If a malfunction occurs under abnormal conditionsBacklight Auto Power Off FunctionAdjusting the LCD Contrast Turning the key sound On and OffDisplay Symbols and Part Names Display SymbolsPart Names Key AssignmentsEntering Characters Entering CharactersMoving the Cursor Making CorrectionsSetting the Home Clock Clock ModePrecautions Built-in Calendar and ClockHome Selecting the date format Default Month-Day-YearSetting Daylight Saving Time DST Summer time ON/OFF NE W Y ORKSetting the Daily Alarm time AlarmTurning the Daily and Hourly Alarms ON/OFF AlarmTelephone Mode BUS I Ness Pers Onal Sear CH NA ME? Others Search NAME?RST Name Company EntryBUS I Ness Search NAME? ExampleNavigating the Monthly Calendar Display Calendar ModeSearch Last Name Alphabetical SearchSchedule Mode Directly go to the target monthSequential search Alarm YESAlarm no Anniversary Mode Date searchDescr I PT I on To Do ModeTo do Sequential searchDone Completed Items Direct Search Memo ModeMemo SEARCH? 2AB3 4 5 6Expense Report Category Expense ModeAmount Payment Check AtegoryPayment Check Rece I PT YES Summary ReportRecall ExpenseEdit the Category Editing ListingsDeleting Listings EditWord Translator Mode ENG SPAExample Operation Display Calculator ModeCAL Culat or Setting a new currency conversion rate Conversion ModeCurrency Conversion Mode Currency CAD USD RATE=Currency conversion Metric Conversion ModeConvert metric unit Accessing listings Registering a PasswordChanging the Password Secret FunctionBlackjack Game ModeBlackjack Twenty-one 32K4Alpha Attack Alpha Attack Level 0 EY3KWBacklight Battery Replacement Battery ReplacementOperating Battery Replacement Battery replacement time Batteries used Type Model Quantity UseSpecifications Replacing the batteriesPower consumption Currency/Unit conversion modeGame mode Power supplyAppendices Exchanging Data with a PCMemo Canada Sharp Corporation

EL-6990 specifications

The Sharp EL-6990 is a versatile scientific calculator that is particularly well-suited for students, engineers, and professionals who require advanced calculations for their daily tasks. It is known for its robust features, user-friendly design, and innovative technology, making it an invaluable tool in a variety of settings.

One of the primary features of the Sharp EL-6990 is its large 2-line display that provides a clear view of calculations and results. The dual-line feature allows users to input equations and see the results simultaneously, enhancing the user experience and reducing errors during complex calculations. The display is also capable of showing fractions, equations, and various other functions in a format that is easy to understand.

The calculator is equipped with a comprehensive range of built-in functions, including more than 400 scientific and statistical functions. This includes everything from basic arithmetic operations to advanced statistical calculations, such as standard deviation and regression analysis. Furthermore, the EL-6990 supports complex numbers and can perform operations with them, which is particularly beneficial for higher-level mathematics and engineering courses.

In addition to its wide array of mathematical functions, the Sharp EL-6990 also features programmable capabilities. Users can store previously calculated formulas and equations for quick access, allowing for increased efficiency when working on repetitive tasks. This programming function makes it a popular choice among both students and professionals who need to streamline their workflow.

The EL-6990 incorporates Sharp’s proprietary WriteView technology, which enables users to view and edit expressions in a format that replicates traditional mathematical notation. This feature makes it easier for users to input complex formulas and understand the relationship between inputs and outputs.

Another notable characteristic of the Sharp EL-6990 is its portability. Designed with a compact body, the calculator is lightweight and easy to carry, making it a convenient companion for students on the go. Its durable construction and user-friendly interface further enhance its appeal, making it suitable for extensive daily use.

In conclusion, the Sharp EL-6990 is a powerful scientific calculator, offering a range of features and technologies tailored to meet the needs of students and professionals alike. Its clear display, extensive function library, programmability, and innovative WriteView technology set it apart as a reliable choice for anyone looking to enhance their computational efficiency. Whether for classroom use, fieldwork, or extensive calculations, the EL-6990 is engineered to deliver performance and reliability.
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