Citizen SR-282 User Manual

-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

Citizen SR-282 Specifications

General

Brand	Citizen
Model	SR-282
Category	Calculator
Language	English

Summary

General Guide

Turning on or off

Instructions for powering the calculator on and off, including battery replacement.

Auto power-off function

Details on the automatic power-off feature and how to reactivate the calculator.

Reset operation

Procedure for resetting the calculator to default settings and clearing memory.

Contrast adjustment

How to adjust the screen contrast for better readability.

Display readout

Explanation of the display components, lines, and indicators.

Before Starting Calculation

Using MODE keys

Guide on using MODE keys to select operating modes like MAIN, STAT, CPLX, RESET, ENG.

Using 2nd Keys

Explanation of how to access secondary functions using the 2nd key.

Corrections

Methods for correcting input errors, deleting digits, or clearing entries.

Undo function

How to use the undo function to revert recent errors.

Replay function

Functionality to review and edit previously executed operations.

Memory calculation

Details on using memory variables (A-Y, M) for storing and recalling values.

Order of operations

Explanation of the calculation precedence rules followed by the calculator.

Accuracy and Capacity

Information on the calculator's display and calculation digit limits.

Error conditions

Basic Calculations

Arithmetic calculation

Covers basic arithmetic operations and expression entry.

Parentheses calculations

Explains how to use parentheses for order of operations.

Percentage calculation

Details how to perform percentage calculations, add-ons, and discounts.

Display notations

Describes fixed-point, scientific, and engineering display formats.

Engineering Symbol Notation

Scientific Functional Calculations

Logarithms and Antilogarithms

Covers common and natural logarithms and anti-logarithms.

Fraction calculation

Explains how to input and display fractional values.

Angle unit conversions

Details converting between degrees, radians, and grads.

Sexagesimal → Decimal transformation

Describes converting between sexagesimal and decimal notations.

Trigonometric / Inverse-Tri. functions

Explains standard trigonometric and inverse functions.

Hyperbolic / Inverse-Hyp. functions

Covers hyperbolic and inverse hyperbolic functions.

Coordinates transformation

Explains conversion between rectangular and polar coordinates.

Probability

Details probability functions like nPr, nCr, and factorial.

Other functions (1/x, √, √, x², x³, x, INT, FRAC)

Lists and explains reciprocal, roots, powers, INT, and FRAC functions.

Unit Conversion

Covers the built-in unit conversion feature.

Physics constants

Lists and explains available physics constants.

Base-n calculations

Bases conversions

Explains conversions between binary, octal, decimal, and hexadecimal.

Block Function

Describes how binary results are displayed in blocks.

Basic arithmetic operations for bases

Covers arithmetic operations in binary, octal, and hex bases.

Negative expressions

Explains representation of negative numbers in non-decimal bases.

Logical operation

Details logical operations like AND, OR, XOR, NOT.

Statistical Calculations

Entering data

Guides on how to input single-variable and paired-variable data.

Deleting data

Explains methods to delete input or stored statistical data.

Editing data

Details how to view, correct, and delete data entries.

FULL message

Explains the "FULL" indicator and its causes.

Complex Calculations

Complex Number Operations

Covers addition, subtraction, multiplication, and division of complex numbers.