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Calculator
EC-3031
Radio Shack EC-3031
40 pages
Manual
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24
Constant Cal
culations
Pres
s the fu
ncti
on key (
÷
,
×
, –, +) twice
to make
the fo
llowing va
lue a
constant.
Note:
A
K
appears
on the
display
when
you us
e a co
nstant.
65-754.fm P
age 24 Friday, A
ugust 27, 1999 1:
17 PM
23
25
Table of Contents
Main Page
Default Chapter
5
Table of Contents
5
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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