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CITIZEN SR-281 EN User Manual

CITIZEN Calculators, organizers

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File name : SR17E-E.doc

Date: 2003/10/8 Trimmed Size : 140 x 75 mm SCALE 1 : 1

-E1-

General Guide.................................................................................... 2

Turning on or off .............................................................................. 2
Battery replacement......................................................................... 2
Auto power-off function.................................................................... 2
Reset operation ............................................................................... 2
Contrast adjustment......................................................................... 3
Display readout................................................................................ 3

Before Starting Calculation .............................................................. 4

Using " MODE " keys....................................................................... 4
Using " 2nd " Keys........................................................................... 4
Corrections ...................................................................................... 4
Undo function .................................................................................. 4
Replay function................................................................................ 5
Memory calculation.......................................................................... 5
Order of operations.......................................................................... 6
Accuracy and Capacity .................................................................... 7
Error conditions ............................................................................... 9

Basic Calculations ............................................................................ 9

Arithmetic calculation..................................................................... 10
Parentheses calculations............................................................... 10
Percentage calculation .................................................................. 11
Display notations ........................................................................... 11

Scientific Functional Calculations................................................. 13

Logarithms and Antilogarithms ...................................................... 13
Fraction calculation ....................................................................... 13
Angle unit conversions .................................................................. 14
Sexagesimal

↔ Decimal transformation........................................15

Trigonometric / Inverse-Tri. functions ............................................ 15
Hyperbolic / Inverse-Hyp. functions............................................... 16
Coordinates transformation ........................................................... 16
Probability...................................................................................... 17
Other functions ( 1/x,

,

3

,

X

, x

2

, x

3

, x

y

, INT, FRAC )........ 18

Unit Conversion ............................................................................. 19
Physics constants .......................................................................... 19

Base–n calculations........................................................................ 24

Bases conversions ........................................................................ 25
Block Function ............................................................................... 25
Basic arithmetic operations for bases............................................ 27
Negative expressions .................................................................... 27
Logical operation ........................................................................... 27

Statistical Calculations ................................................................... 27

Entering data ................................................................................. 28

SR-281 / SR-282

Scientific Calculator

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