Citizen SR-260 User Manual

E-1
Contents
General guide .................................................. E - 2
Power supply ......................................................................... E - 2
The keyboard ......................................................................... E - 2
Display symbols .................................................................... E - 3
Display formats ..................................................................... E - 3
Order of operations ................................................................ E - 4
Correction .............................................................................. E - 5
Accuracy and Capacity .......................................................... E - 5
Overflow / Error conditions .................................................... E - 7
Basic calculation ............................................. E - 8
Mixed arithmetic calculation ................................................. E - 8
Parentheses calculations ...................................................... E - 8
Constant calculation .............................................................. E - 8
Percentage calculation .......................................................... E - 9
Memory calculation ............................................................... E - 9
Scientific calculation ..................................... E - 10
Reciprocal, Factorial ........................................................... E - 10
Square, Square / Cubic Root, Power, Root ........................ E - 10
Logarithms and Antilogarithms ........................................... E - 10
Fraction calculation ............................................................. E - 10
Angular units conversion ..................................................... E - 11
Trigonometric / Inverse trigonometric functions ................. E - 11
Hyperbolic / Inverse hyperbolic functions ........................... E - 12
Rectangular / Polar coordinates .......................................... E - 12
Permutations, Combinations .............................................. E - 12
Sexagesimal ↔ Decimal form conversion ......................... E - 13
Base-n mode calculation .................................................... E - 13
Complex numbers calculation ............................................ E - 14
Random numbers and Exchange key. ................................ E - 14
Unit conversion .................................................................... E - 15
Statistics calculation ..................................... E - 15
Computing single variable statistics ................................... E - 15
Viewing statistics data ........................................................ E - 16
Adding a data entry ............................................................. E - 17
Editing statistics data .......................................................... E - 17
Delete error .......................................................................... E - 18
Weighted data entry method ............................................... E - 18

Citizen SR-260 Specifications

General

Brand	Citizen
Model	SR-260
Category	Calculator
Language	English

Summary

General guide

Power supply

Describes how to turn the calculator on/off and battery replacement procedures.

The keyboard

Explains the calculator's keys, including primary and secondary functions.

Display symbols

Display formats

Order of operations

Outlines the precedence rules for calculations, including parentheses and function order.

Correction

Covers how to correct entry errors using CE and backspace keys.

Overflow / Error conditions

Details conditions causing overflow/error messages and how to clear them.

Basic calculation

Mixed arithmetic calculation

Demonstrates calculations involving multiple arithmetic operations.

Parentheses calculations

Explains the use of parentheses to control calculation order and nesting.

Percentage calculation

Memory calculation

Scientific calculation

Square, Square / Cubic Root, Power, Root

Logarithms and Antilogarithms

Trigonometric / Inverse trigonometric functions

Explains how to use sine, cosine, tangent, and their inverse functions.

Hyperbolic / Inverse hyperbolic functions

Rectangular / Polar coordinates

Base-n mode calculation

Complex numbers calculation

Statistics calculation

Computing single variable statistics

Details how to calculate statistical measures like mean, standard deviation, and capability indices.

Viewing statistics data

Adding a data entry

Editing statistics data

Delete error