Radio Shack EC-3031 owner manual Fm Page 3 Friday, August 27, 1999 117 PM

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65-754.fm Page 3 Friday, August 27, 1999 1:17 PM

Paper Feed Key — lets you quickly ad- vance the print paper without affecting calculations.

Non-Add Print Key — lets you print dates, code numbers, or other refer- ence numbers without affecting the cal- culations. You can also print out only the calculation results.

Two-Way Paper Feed — lets you feed paper from an internal compartment or from a convenient fold-out roll holder.

Two Power Sources — let you power your calculator from four AA batteries or standard AC power (with an optional AC adapter).

Automatic Power Off — conserves battery power by turning off the calcula- tor about 6 minutes after the last entry.

Before you begin using your new EC- 3031, we recommend you completely read through this manual and familiar- ize yourself with the calculator’s many functions and features.

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Contents EC-3031 Features Fm Page 3 Friday, August 27, 1999 117 PM FCC Wants YOU to Know Contents Choosing a Power Source Installing BatteriesPreparation Fm Page 7 Friday, August 27, 1999 117 PM Fm Page 8 Friday, August 27, 1999 117 PM Using AC Power Fm Page 10 Friday, August 27, 1999 117 PM Fm Page 11 Friday, August 27, 1999 117 PM Installing the Paper Roll Fm Page 13 Friday, August 27, 1999 117 PM Fm Page 14 Friday, August 27, 1999 117 PM Fm Page 15 Friday, August 27, 1999 117 PM Turning the EC-3031 ON/OFF OperationPrinting Printing a Displayed Value Rounding Fm Page 20 Friday, August 27, 1999 117 PM Correcting Entry Errors Estimating Calculation Results Correcting Calculation ErrorsBasic Calculations Calculation ExamplesConstant Calculations Fm Page 25 Friday, August 27, 1999 117 PM Memory Calculations To recall the value from memory, press MR Percentage Calculations 15% add-on to 25% decrease Markup Calculations Care Replacing the INK Roller Fm Page 33 Friday, August 27, 1999 117 PM Resetting Calculator Specifications Fm Page 36 Friday, August 27, 1999 117 PM Fm Page 37 Friday, August 27, 1999 117 PM Fm Page 38 Friday, August 27, 1999 117 PM Limited One-Year Warranty RadioShack Division Tandy Corporation Fort Worth, Texas