Radio-shack EC-3031 User Manual download pdf (Page 5)

CONTENTS

Preparation ...................................... 6

Choosing a Power Source ............. 6

Installing Batteries .................... 6

Using AC Power ........................ 9

Installing the Paper Roll .............. 12

Operation ....................................... 16

Turning the EC-3031 On/Off ........ 16

Printing ........................................ 17

Printing a Displayed Value ...... 18

Rounding ..................................... 19

Correcting Entry Errors ............... 21

Correcting Calculation Errors ...... 22

Estimating Calculation Results .... 22

Calculation Examples .................. 23

Basic Calculations .................. 23

Constant Calculations ............. 24

Memory Calculations .............. 26

Percentage Calculations ......... 28

Markup Calculations ............... 30

Care ................................................ 31

Replacing the Ink Roller .............. 32

Resetting the Calculator .............. 34

Specifications ................................ 35

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Radio-shack EC-3031 User Manual Page 5