Table of Contents
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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
Contents
E-1
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Table of Contents
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Summary of Contents for Citizen SR-260
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Page 1: Table Of Contents
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 ............ -
Page 2: General Guide
General guide Power supply On or Off : To turn the calculator on, press [ON/C]; to turn the calculator off, press [2ndF] [OFF]. Auto power-off function : This calculator automatically turns off it when not operated for approximately 9 minutes. Power can be restored by pressing the [ON/C] key again. -
Page 3: Display Symbols
(Note) : [ A ], [ B ], [ C ], [ D ], [ E ], [ F ] are 1 functions in HEX mode. Display symbols Indicators shown on the display is to indicate you the current status of the calculator. -
Page 4: Order Of Operations
On the contrary, if fewer than the selected number of decimal places is keyed, it will be padded with trailing zero. (Ex.) : Fix the display at 4 decimal places, then key in 4.23 Step 1 : press [ 2ndF ] [ TAB ] 4 0.0000 Step 2 : key in 4.23 [ = ] 4.2300... -
Page 5: Correction
5) +/– 6) X 7) nPr, nCr 8) x , ÷ 9) +, – Correction If you have made a mistake when entering a number (but you have not yet pressed an arithmetic operator key), just press [ CE ] to clear the last entry then input it again, or delete individual digits by using the backspace key [ 00 (Ex.) : Correct 12385 as 789... - Page 6 –1 –1 x, cos ≤ 1 –1 1 x 10 sinh x, cosh x X ≤ 230.2585092 tanh x 1 x 10 –1 sinh 5 x 10 –1 cosh 1 ≤ X 5 x 10 –1 tanh –99 log x, ln x 1 x 10 ≤...
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Page 7: Overflow / Error Conditions
Input Total of integer, numerator and a b /c denominator must be within 10 digits (includes division marks) Result Result displayed as fraction for integer when integer, numerator and denominator are less than 1 x 10 nPr, nCr n, n 9999999999, n,r are integers. -
Page 8: Mixed Arithmetic Calculation
Mixed arithmetic calculation 1 + 2 x 3 = ? 1 [ + ] 2 [ x ] 3 [ = ] – 3.5 + 8 ÷ 2 = ? 3.5 [ +/– ] [ + ] 8 [ ÷ ] 2 [ = ] Parentheses calculations Operation inside parentheses are always executed first. -
Page 9: Percentage Calculation
96 ÷ 8 = ? 96 [ ÷ ] 8 [ = ] 75 ÷ 8 = ? 75 [ = ] 9.375 (1.2 x 10 ) ÷ 8 = ? 1.2 [ EXP ] 2 [ = ] Percentage calculation 30% of 120 = ? 120 [ x ] 30 [ 2ndF ] [ % ] [ = ]... -
Page 10: Reciprocal, Factorial
Reciprocal, Factorial 1.25 [ 2ndF ] [1/X] [ = ] 0.80 1.25 5 [ 2ndF ] [ X! ] [ = ] 120.00 5! = ? Square, Square / Cubic Root, Power, Root 2 [ X ] [ + ] 3 [ X ] 4 [ = ] 85.00 5 [ x ] 27 [ 2ndF ] [... -
Page 11: Angular Units Conversion
8 [a b /c ] 4 [a b /c ] 9 + 3.75 12.19 = 12.19 [ + ] 3.75 [ = ] During a fraction calculation, if the figure is reducible, a figure is reduced to the lowest terms after pressing a function command key ([ + ], ÷... -
Page 12: Hyperbolic / Inverse Hyperbolic Functions
–1 ) = ? rad 2 [ ] [ 2ndF ] [ 1/X ] 0.79 – 1 [ 2ndF ] [ cos –1 –1 GRAD 1 = ? grad 1 [ 2ndF ] [ tan 50.00 Hyperbolic / Inverse hyperbolic functions cosh1.5+sinh1.5 = 1.5 [ HYP ] [ cos ] [ + ] 4.48... -
Page 13: Sexagesimal ↔ Decimal Form Conversion
How many 7 [ 2ndF ] [ nCr ] 4 [ = ] 35.00 combinations of 4 items can you select out of a set of numbers of 7 items? Sexagesimal ↔ ↔ ↔ Decimal form conversion ↔ ↔ The calculator enables you to converts the sexagesimal figure , ,, (degree, minute and second) to decimal notation by pressing [ and converts the decimal notation to the sexagesimal notation by [2ndF]... -
Page 14: Complex Numbers Calculation
DEG HEX 4 X 1B (base 16) [ 2ndF ] [ HEX ] 4 [ x ] 1B [ = ] DEG BIN = ? (base 2) [ 2ndF ] [ BIN ] 1101100. = ? (base 10) [ 2ndF ] [ DEC ] 108.00 DEG O C T = ? (base 8) -
Page 15: Unit Conversion
Unit conversion in↔ ↔ ↔ cm ↔ ↔ 12 in = ? cm 12 [ A B ] [ 2ndF ] 30.48 [ in↔cm ] 98 cm = ? in 98 [ 2ndF ] [ A B ] 38.58 [ 2ndF ] [ in↔cm ] (Note) : The operating procedure for unit conversion key, [ ↔... -
Page 16: Viewing Statistics Data
S T A T [ DATA ] 5 S T A T [ DATA ] 5 S T A T [ DATA ] 5 S T A T [ DATA ] 9 S T A T [ DATA ] 9 S T A T [ DATA ] 9 S T A T... -
Page 17: Adding A Data Entry
(Method 2) : Step 1 : Press [ = ] once to view the first data DEG ED S T A T 2.00 Step 2 : Continue pressing [ = ] once for each data, it will display 5.00, 5.00, 5.00, 5.00, 9.00, 9.00, 9.00 in sequence. -
Page 18: Delete Error
Delete error (Ex.6) : If you enter and delete a value that isn’t included in the stored data by mistake, “dEL Error ” appears, but the previous data are still retained, for example, delete 7 based on Ex.1. S T A T Step 1 : Press 7 [ 2ndF ] [ DEL ] dEL Error STAT...
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