65-754.fm Page 5 Friday, August 27, 1999 1:17 PM

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

5

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Radio Shack EC-3031 owner manual Contents