Citizen SRP-265N: инструкция

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

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

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

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

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

UNIT CONVERSION KEY ................................................................4

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

PROGRAMMING KEYS (USE IN THE PGM MODE ONLY) ............6

STATISTICAL KEYS (USE IN THE STAT MODE ONLY).................6

THE DISPLAY..................................................................... 7

ORDER OF OPERATIONS................................................. 8

ACCURACY AND CAPACITY............................................ 8

OVERFLOW / ERROR CONDITIONS ................................ 9

POWER SUPPLY.............................................................. 10

NORMAL CALCULATIONS ............................................. 10

Basic Calculation  (Including Parenthesis Calculations) ..............10

Constant Calculations..................................................................10

Memory Calculations ...................................................................11

FUNCTION CALCULATIONS........................................... 11

Sexagesimal 

↔

 Decimal conversion ...........................................11

Fraction Calculation.....................................................................12

Trigonometric / Inverse – Tri. Functions ......................................12

Hyperbolic Functions and Inverse – Hyp. Functions ...................12

Common And Natural Logarithms / Exponentiations ...................13

Power, Root, Reciprocals, Factorials...........................................13

Unit Conversion...........................................................................13

Physics Constants .......................................................................14

STANDARD DEVIATIONS ............................................... 14

PROGRAMMING .............................................................. 15

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. 

[ 00

Æ

0 ] Right Shift Key 

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

(Ex.)  

123456  

123456. 

 [ 

00

Æ

0 ] 

12345. 

 [ 

00

Æ

0 ] 

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. 

[ X

Æ

M ] Memory Store Key 

Press [ X

Æ

M ] 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

 X

Æ

K 

], [ 2ndF ] [ Kb

 X

Æ

K 

] Constant (Ka, Kb) Memory 

Store Key  

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

[ Ka

 X

Æ

K 

], [ Kb

 X

Æ

K 

] 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

 X

Æ

K 

] or [ Kb

 X

Æ

K 

] 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). 

UNIT CONVERSION KEY 

This calculator has 13 unit conversion keys as follows. Each key has 

two conversion features. For example, pressing [ A

Æ

B ] before 

[ in

↔

cm] can convert a number in inches to centimeters ; Pressing 

[ 2ndF ] [ A

Å

B ] before [ in

↔

cm] can convert a number in centimeters 

to inches.  

   Key 

Meanings   

[ in

↔

cm ] 

inch

↔

centimeter  

[ feet

↔

m ] 

feet

↔

meter 

[ feet 

2 

↔

 m 

2

 ] 

feet 

2

↔

meter 

2 

[ B.gal

↔

l ] 

Britain. gallon

↔

liter 

[ gal

↔

l ] 

gallon

↔

liter 

[ Pint

↔

l ] 

Pint

↔

liter 

[ Tr.oz

↔

g ] 

Troy ounce

↔

gram 

[ oz

↔

g ] 

ounce

↔

gram 

[ lb

↔

kg ] 

libra

↔

kilogram 

[ atm

↔

kpa ] 

atmospheric pressure

↔

kilopascal 

[ cal

↔

KJ ] 

calorie

↔

Kilo–Joule 

[ 

℉

↔

℃

 ] 

Fahrenheit 

↔

 Celsius 

[ mmHg

↔

kpa ] 

mmHg

↔

kilopascal 

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. 

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[ 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 

x 

] 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 ] [ e

x 

] 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 

x 

]. 

[ 

√

 ], [ 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 ] [ 

y

x  ] Root Key 

Press any number [ x ] [ 2ndF ] [ 

y

x  ], any number [ y ], and [ = ] to 

display the yth root of x. 

[ a

b/c ], [ 2ndF ] [  d/e ] Fraction key  

Pressing by [ a

b/c ] can enter a fraction or convert a fraction to a 

decimal number. Pressing by [ 2ndF ] [  d/e ] can convert a mixed 

number to an improper fraction and vice versa. 

[ CONST ] Physics Constant Key 

This calculator enables you to perform calculations with 15 built–in 

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physics constants. Just pressing [ CONST ] key continuously can 

show the following symbols and values.  

Symbol Meaning 

Value 

c

Speed of light 

299792458 m / s 

g

Acceleration of gravity 

9.80665 m s 

–2

G

Gravitational constant 

6.6725985 x 10 

–11

 N m 

2 

kg 

–2

Vm

Molar volume of ideal gas 

0.0224141 m 

3

 mol 

–1

N 

A

Avagadro’s number 

6.022136736 x 10 

23

 mol 

–1

R

Molar gas constant 

8.3145107 J / K mol 

e

Elementary charge 

1.6021773349 x 10 

–19

 C 

m 

e

Electron mass 

9.109389754 x 10 

–31  

kg 

m 

p

Proton mass 

1.67262311  x 10 

–27 

kg 

m 

n

Neutron mass 

1.67492861 x 10 

–27 

kg 

u

Unified atomic mass 

1.66054021 x 10 

–27 

kg 

h

Plank constant 

6.62607554 x 10 

–34

J.S 

k

Boltzmann constant 

1.38065812 x 10 

–23 

J.K 

–1 

μ

0

Magnetic permittivity

1.2566370614 x 10

 -06 

Hm 

–1

ε

0

Dielectric permittivity

8.854187817 x 10 

–12

 Fm 

–1

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 ] [ STAT ] Statistical Mode Select Key 

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

display. 

[ 2ndF ] [ CAD ] Statistical Register Clear Key 

Clears the statistical calculation registers.