Citizen SRP-145N Bedienungsanleitung

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BASIC DEFINITIONS.......................................................... 2

The Keys .......................................................................................2

GENERAL KEYS ..............................................................................2

MEMORY KEYS ...............................................................................2

SPECIAL KEYS ................................................................................3

FUNCTION KEYS.............................................................................4

PROGRAMMING KEYS (USE IN THE PGM MODE ONLY) ............5

STATISTICAL KEYS (USE IN THE STAT MODE ONLY).................5

THE DISPLAY..................................................................... 6

ORDER OF OPERATIONS................................................. 7

ACCURACY AND CAPACITY............................................ 7

OVERFLOW / ERROR CONDITIONS ................................ 8

POWER SUPPLY................................................................ 9

NORMAL CALCULATIONS ............................................... 9

Basic Calculation (Including Parenthesis Calculations)................9

Constant Calculations....................................................................9

Memory Calculations...................................................................10

FUNCTION CALCULATIONS........................................... 10

Sexagesimal ↔Decimal conversion ...........................................10

Fraction Calculation.....................................................................11

Trigonometric / Inverse – Tri. Functions ......................................11

Hyperbolic Functions and Inverse – Hyp. Functions ...................11

Common And Natural Logarithms / Exponentiations...................12

Power, Root, Reciprocals, Factorials...........................................12

STANDARD DEVIATIONS ............................................... 12

PROGRAMMING .............................................................. 13

Contents

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BASIC DEFINITIONS

The Keys

To keep your calculators as compact as possible, some keys have

more than one function. You can change the function of a key by

pressing another key first, or by setting the calculator in a certain

mode.

The following pages give you more detailed explanation of each key’s

use and function.

[ 2ndF ] Second Function Select Key

Some keys have a second function inscribed above them. To perform

this second function, press [ 2ndF ]. “ 2F ” appears in the display then

press the key.

GENERAL KEYS

[ 0 ] ~[ 9 ] [‧] Data Entry keys

Press these keys in their logical sequence to enter numbers.

[ + ] [ – ] [ x ] [ ÷ ] [ = ] Basic Calculation Keys

Press these keys in their logical sequence for addition, subtraction,

multiplication, division, and to display answers.

[ ON/C ] Power On / Clear Key

Press [ ON/C ] to turn on the calculator and to clear everything except

the contents of the memory, constant memory(Ka, Kb), and program

memory.

[ CE ] Clear Entry Key

Press [ CE ] to erase incorrect entries.

[ 00Æ0 ] Right Shift Key

Press to clear the last significant digit of the number displayed.

(Ex.) 123456 123456.

[ 00Æ0 ] 12345.

[ 00Æ0 ] 1234.

[ +/– ] Sign Change Key

Press [ +/– ] to change the displayed number from positive to negative

or from negative to positive.

MEMORY KEYS

[ MR ] Memory Recall Key

Press [ MR ] to display the contents of the memory.

[ XÆM ] Memory Store Key

Press [ XÆM ] to store the displayed value into memory. Any previous

value in memory is automatically erased.

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[ M+ ] Memory Plus Key

Press [ M+ ] to total the current calculation and add the result to the

value already in memory.

[ 2ndF ] [ Ka

], [ 2ndF ] [ Kb

] Constant (Ka, Kb) Memory

Store Key

Press to enter the displayed value into constant memory Ka or Kb.

[ Ka

], [ Kb

] Memory Recall Key

Press to display the contents of a constant memory.

Note :

•Constant memories Ka and Kb can have a value of 0

•If you press [ Ka

] or [ Kb

] after entering a number or marking

a calculation, the displayed value is multiplied by the value in Ka or

Kb.

SPECIAL KEYS

[ ( ], [ ) ] Parenthesis Keys

Press to override the calculation’s default order of operation by using

parentheses. You can use up to 6 levels of parenthes in a single

calculation.

[ EXP ] Exponent Key

To enter a number in scientific notation, first enter the numbers for the

mantissa, press [ EXP ], and then enter the numbers for the exponent.

[ 2ndF ] [ π] Key

Press [ 2ndF ] [π] to display the value of π, which is the ratio of

circle’s circumference to its diameter (approximately 3.141592654).

[ 2ndF ] [ X↔Y ] Register Exchange Key

Press [ 2ndF ] [ X↔Y ] to exchange the displayed value (X–register)

with the contents of the working register (Y–register).

(Ex.) 123 [ + ] 456 [ = ] 579.

[ 2ndF ] [ X↔Y ] 456.

[ 2ndF ] [ X↔Y ] 579.

[ 2ndF ] [ FIX ] Decimal Point Set Key

Use to set the number of digits displayed after the decimal point in

either final or intermediate results. The calculator continues to use its

full range for internal calculations and only rounds the number in the

display.

•[ 2ndF ] [ FIX ] [ 0 ]~[ 6 ] –– Sets the number of digits to be

displayed to the right of decimal point.

•[ 2ndF ] [ FIX ] [ 7 ], [ 8 ], [ 9 ], [‧] –– Selects floating point format.

(Ex.) 5 [ ÷] 9 [ = ] 0.555555556

[ 2ndF ] [ FIX ] [ 2 ] 0.56

[ 2ndF ] [ FIX ] [ 5 ] 0.55556

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[ 2ndF ] [ FIX ] [ ‧] 0. 555555556

Note : [ 2ndF ] [ FIX ] is inactive immediately after and during

numerical input.

[ SCI ] Scientific Key

Converts the displayed number into a power of ten and back.

(Ex.) : 12.3456 [ x ] 10 [ = ] 123.456

[ SCI ] 1.23456 02

[ SCI ] 123.456

[ SCI ] 1.23456 02

[ DRG ] Angle unit conversion key

Press to change the angle unit as DEG (Degrees), RAD (Radian), or

GRAD (Gradient).

FUNCTION KEYS

[ 2ndF ] [ ], [ 2ndF ] [ ] Sexagesimal Notation / Decimal

Notation Conversion Keys

To change from sexagesimal (base 60) notation (degree, minute,

second) to decimal notation (degree) press [ 2ndF ] [ ]. To

change from decimal notation to sexagesimal notation, enter the

number in decimal form and then press [ 2ndF ] [ ].

[ sin ], [ cos ], [ tan ] Sine, Cosine, Tangent Keys

Calculate the trigonometric functions of the displayed value.

[ 2ndF ] [ sin –1 ], [ 2ndF ] [ cos–1 ], [ 2ndF ] [ tan–1 ] Inverse Sine,

Inverse Cosine, Inverse Tangent Keys

Calculate the inverse trigonometric functions of the displayed value.

[ 2ndF ] [ HYP ] [ sin ], [ 2ndF ] [ HYP ] [ cos ], [ 2ndF ] [ HYP ]

[ tan ] Hyperbolic Keys

Calculate the hyperbolic functions of the displayed value.

[ 2ndF ] [ HYP ] [ 2ndF ] [ sin–1 ], [ 2ndF ] [ HYP ] [ 2ndF ]

[ cos–1 ], [ 2ndF ] [ HYP ] [ 2ndF ] [ tan–1 ] Inverse Hyperbolic Keys

Calculate inverse hyperbolic functions of the displayed value.

[ log ], [ 2ndF ] [ 10

] Common Logarithm And Common

Antilogarithm Keys

Calculate the common logarithm of the displayed value. To calculate

the common antilogarithm of the displayed value, press [ 2ndF ] [ 10 x ].

[ ln ], [ 2ndF ] [ ex ] Natural Logarithm And Natural Antilogarithm

Keys

To calculate the neutral logarithm of the displayed value, press [ ln ].

To calculate the natural antilogarithm of the displayed value, press

[ 2ndF ] [ e

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[ √], [ x 2 ] Square Root And Square Keys

Press [ √] to find the square root of the displayed value. To square

the displayed value, press [ x 2 ].

[ 2ndF ] [ 3√] Cubic Root Key

Press [ 2ndF ] [ 3√] to find the cubic root of the displayed value.

[ 2ndF ] [ 1/x ] Reciprocal Key

Press [ 2ndF ] [ 1/x ] to calculate the reciprocal of the displayed value.

[ 2ndF ] [ x! ] Factorial Key

To find the factorial of the displayed value, press [ 2ndF ] [ x! ]

[ x y] Power Key

Press any number [ x ],[ x y ], any number [ y ], and [ = ] raise x to the y

power.

[ 2ndF ] [ yx ] Root Key

Press any number [ x ] [ 2ndF ] [ yx ], any number [ y ], and [ = ] to

display the yth root of x.

[ c

a ], [ 2ndF ] [ e

→] Fraction key

Pressing by [ c

a ] can enter a fraction or convert a fraction to a

decimal number. Pressing by [ 2ndF ] [ e

→] can convert a mixed

number to an improper fraction and vice versa.

PROGRAMMING KEYS (USE IN THE PGM MODE ONLY)

[ 2ndF ] [ PGM ]─Program Mode Set and Clear Key

Set the calculator to the learn program mode. PGM appears on the

display and the previous contents of program memory are cleared.

When you finish entering the program, press [ 2ndF ] [ PGM ]. The

program you just entered is stored in the program memory. PGM

disappears and the calculator exits the program mode.

[ RUN ]─Compute Key

Runs the recorded program.

[ 2ndF ] [ [X] ]─Specify Variable Key

Lets you have the calculator wait for an entry during a program.

[ 2ndF ] [ HALT ]─Temporarily Halt Calculation Key

Temporarily halts a program so you can view the intermediate results

or interrupt calculation.

STATISTICAL KEYS (USE IN THE STAT MODE ONLY)

[ 2ndF ] [ SD ] Statistical Mode Select Key

Sets the calculator to statistical calculation mode. STAT appears in the

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display.

[ 2ndF ] [ CAD ] Statistical Register Clear Key

Clears the statistical calculation registers.

[ DATA ], [ DEL ] Data Entry and Delete Key

In the STAT mode, enter data by pressing the desired numbers, then

[ DATA ]. If you enter incorrect data and do not notice your mistake

until you press [ DATA ], enter the same incorrect data and then press

[ DEL ] to delete that incorrect data.

[ x] Arithmetic Mean Key

Calculates the arithmetic mean ( x) of the data.

[ 2ndF ] [σn] Population Standard Deviation Key

Calculates the population standard deviation of the data.

[σn–1] Sample Standard Deviation Key

Calculates the sample standard deviation of the data.

[ 2ndF ] [Σx 2 ] Sum of Square Value Key

Calculates the sum of the square value (Σx 2) of the data.

[ 2ndF ] [ Σx ] Sum of Value Key

Calculates the sum of the value (Σx ) of the data.

[ n ] Number of Data Key

Displays the number of data (n) entries.

The Display

Indicators showed on the display to indicate you the current status of

the calculator.

•Floating point displays up to 10 digits.

•The mantissa section displays up to 8 digits. the exponent section

displays up to ±99.

SD : Indicates the statistical mode.

M : Indicates that a value is stored in memory.

– : Appears to the left of the mantissa or exponent to

indicate that the respective value is negative.

E : Indicates an error.

PGM : Indicates the program learn mode.

GRAD : Indicates the gradient units have been selected.

RAD : Indicates that radian units have been selected.

DEG : indicates that degree units have been selected.

2F : Appears when the second function has been

selected.

HYP : Appears when the hyperbolic function has been

selected.

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( : Appears when you press [ ( ]. It shows the

present level of nesting.

( n ) : Appears when you press [SHIFT] [[X]] in the

program learn mode and when program

execution halts to let you enter a variable. The

number in brackets shows the number of the

place of the variable, and goes from 1 - 40.

ORDER OF OPERATIONS

Each calculation is performed in the following order of precedence:

1) Functions required inputting values before pressing the function

key, for example, cos, sin, tan, cos –1, sin –1, tan –1, log, ln, x 2, 1/x,

√, π, 3, x!, %, , .

2) Operation in parenthesis

3) Functions required pressing the function key before entering, for

example, [ EXP ] key .

4) Fractions

5) +/–

6) y x , x y

7) x ,

8) +, –

ACCURACY AND CAPACITY

Functions Input range

sin x, cos x, tan x Deg : x <1 x 10 11 deg

Rad : x <1745329252 rad

Grad : x <1.111111111 x 10 11 grad

however, for tan x

Deg : x ≠90 (2n+1)

Rad : x ≠2

(2n+1)

Grad : x ≠100 (2n+1)

(n is an integer)

sin –1 x, cos –1 x x ≤1

tan –1 x x <1 x 10 100

sinh x, cosh x x ≤230.2585092

tanh x x <1 x 10 100

sinh –1 x x <5 x 10 99

cosh –1 x 1 ≤x <5 x 10 99

tanh –1 x x <1

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log x, ln x 1 x 10 –99 ≤x <1 x 10 100

10 xx <100

ex x ≤230.2585092

x0 ≤x <1 x 10100

x 2x <1 x 10 50

1/x 1 x 10 –99 ≤x <1 x 10 100 , x ≠0

3xx <1 x 10 100

x ! 0 ≤x ≤69, x is an integer.

, x <1 x 10 100

x yx >0 : –1 x 10100 <y log x <100

x = 0 : y >0

x <0 : y=n, 1/(2n+1), n is an integer.

but –1 x 10100 <y log x <100

yxx >0 : y ≠0, –1 x 10100 <y

1 log x <100

x = 0 : y >0

x<0 : y=2n+1, l/n, n is an integer.(n≠0)

but –1 x 10100 <y

1 log ⏐x⏐100

a b/cInput：Total of integer, numerator and

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 10

STAT ⏐x ⏐<1 x 10 50 , ⏐Σ x ⏐<1 x 10 100

0 ≤Σx 2 <1 x 10100, 0 ≤n <1 x 10 100

: n ≠0 ; σn–1 : n >1 ; σn: n >0

OVERFLOW / ERROR CONDITIONS

A symbol “ E ” is indicated on the display when any of the following

conditions occur and further calculation becomes impossible. Just

press [ ON/C ] to release those overflow or error indicator and the

subsequent calculation can then be performed.

•An intermediate or final calculation result exceed 1 x 10 100

(including memory calculations).

•You try to divide by zero.

•The number of low priority storage levels exceeds 6 in a

parentheses calculation or nesting parentheses exceed 7 in one

level. (Even if the number of levels is within 6, an error might occur

if you are using memories Ka or Kb, or program memories.)

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•You try to use [ 2ndF ] [ Ka xÆk ] or [ 2ndF ] [ Kb xÆk ] while memories

Ka and Kb are being used for low–priority calculation storage.

•You make a calculation that is out of the range for functional and

statistical calculations.

•You try to store over 40 steps in a program.

To clear calculation after an overflow condition, press [ ON/C ].

POWER SUPPLY

To turn the calculator on, press [ ON/C ] ; To turn the calculator off,

press [ OFF ]. This calculator automatically turns it off when not

operated for approximately 9 minutes. It can be reactivated by

pressing [ ON/C ] key and the display, memory, settings are retained.

The calculator is powered by two alkaline batteries (G13 or LR44).

When the display dims, replace the batteries. Be careful not to be

injured when you replace the battery.

1. Unscrew the screws on the back of the calculator.

2. Insert a flat bladed screwdriver into the slot between the upper and

lower case then carefully twist it to separate the case.

3. Remove both batteries and dispose of them properly. Never allow

children to play with batteries.

4. Wipe off the new batteries with a dry cloth to maintain good contact.

5. Insert the two new batteries with their flat sides (plus terminals) up.

6. Align the upper and lower cases then snap them to close together.

7. Tighten the screws.

NORMAL CALCULATIONS

Basic Calculation

(Including Parenthesis Calculations)

(Ex.) : – 3.5 + 8 ÷2 = 0.5

3.5 [ +/–] [ + ] 8 [ ÷] 2 [ = ] DEG 0.5

(Ex.) : ( 5 – 2 x 1.5 ) x 3 + 0.8 x ( – 4 ) = ?

[ ( ] 5 [ – ] 2 [ x ] 1.5 [ ) ] [ x ] 3 [ + ] 0.8 [ x ]

4 [ +/ – ] [ = ]

DEG 2.8

(Ex.) : 2 x [ 7 + 6 x ( 5 + 4 ) ] = 122

2 [ x ] [ ( ] 7 [ + ] 6 [ x ] [ ( ] 5 [ + ] 4 [ = ] DEG 122.

(Note) : It is unnecessary to press the [ ) ] key before the [ = ] key.

Constant Calculations

(Ex.) : 3 + 2.3 = 5.3

6 + 2.3 = 8.3

3 [ + ] 2.3 [ = ] DEG 5.3

6 [ = ] DEG 8.3

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