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E – 4 

File name : SR19-English.doc   

vision : 2003/08/24 

Pressing the [ 

T

 ] or [ 

S

 ] following [ MODE ] key can make the 

contrast of the screen lighter or darker. Holding either key down will 
make the display become respectively lighter or darker. 

1–3 Display 

Readout 

The display comprises the entry line, the result line, and indicators. 

MA IN

7 – 8 

÷

66.

½

Entry line

Indicator

Result line

Indicator

 

Entry line

 

SRP-280 displays an entry of up to 76 digits. SRP-285 
displays an entry of up to 80 digits. Entries begin on 
the left ; those with more than 11 digits scroll to the left. 
Press [ 

X

 ] and [ 

W

 ] to move the cursor through an 

entry. Press [ 2nd ] [ 

X

 ] or [ 2nd ] [ 

W

 ] to move the 

cursor immediately to the beginning or end of the entry. 

Result line

  It displays a result of up to 10 digits, as well as a 

decimal, a negative sign, a " 

x10

 " indicator, and a 

2-digits positive or negative exponent. Results that 
exceed the digit limit are displayed in scientific 
notation. 

Indicators

  The following indicators appear on the display to 

indicate you the current status of the calculator. 

Indicator  

Meaning 

   

M Independent 

memory 

– 

Result is negative, or the entry line is full 

2nd 

2nd set of function keys is active. 

MAIN 

Main mode is active 

MODE 

Mode selection is active 

STAT 

Statistics mode is active 

Base-n 

Base-n mode is active 

VLE 

Variable linear equation mode is active 

QE 

Quadratic equation mode is active 

CPLX 

Complex number mode is active 

DEGRAD  Angle mode : 

DEG

rees, 

GRAD

s, or 

RAD

ENGSCI 

ENG

ineering or 

SCI

entific notation 

TAB 

Number of decimal places displayed is fixed 

HYP 

Hyperbolic-trig function will be calculated 

BUSY 

While an operation is executing 

»

 

¼

 

There are digits to the left or right of the display 

½

 

¾

 

There are earlier or later results that can be displayed 

Summary of Contents for SR-285

Page 1: ...3 Accuracy And Capacity 3 Error Conditions 3 2 Mode 0 MAIN 3 2 1 Arithmetic Calculations 3 2 2 Display formats 3 2 3 Parentheses Calculation 3 2 4 Percentage Calculation 3 2 5 Continuous calculation...

Page 2: ...E 2 File name SR19 English doc vision 2003 08 24 4 2 Negative expression 3 4 3 Basic arithmetic operations for bases 3 4 4 Logical operation 3 5 Mode 3 CPLX 3 6 Mode 4 VLE 3 7 Mode 5 QE 3...

Page 3: ...to turn the power on Auto Power Off Function This calculator automatically turns it off when not operated for approximately 9 15 minutes It can be reactivated by pressing ON key and the display memory...

Page 4: ...a decimal a negative sign a x10 indicator and a 2 digits positive or negative exponent Results that exceed the digit limit are displayed in scientific notation Indicators The following indicators app...

Page 5: ...mode 2 to enter the mode immediately Selecting an item from display menus Many functions and settings are available on menus A menu is a list of options displayed across the entry line Give Pressing...

Page 6: ...means the calculator is in insert mode On the contrary the blinking cursor is displayed as and it means the calculator is in overwrite mode To clear all characters clear all input character by CL key...

Page 7: ...to variables 2nd RECALL recalls the value of variable 2nd CL VAR clears all variables except PROG 2nd CL PROG clears the contents of PROG Order Of Operations Each calculation is performed in the follo...

Page 8: ...eral every reasonable calculation is displayed up to 10 digits mantissa or 10 digits mantissa plus 2 digits exponent up to 10 99 Numbers used as input must be within the range of the given function as...

Page 9: ...ad 100 2n 1 n is an integer DMS DD MM SS SS 1 x 10 100 0 MM SS SS x 2 777777777 x 10 96 x y x 0 1 x 10 100 y log x 100 x 0 y 0 x 0 y n 1 2n 1 n is an integer but 1 x 10 100 Y log x 100 x y y 0 x 0 1 x...

Page 10: ...gument to a function outside the valid range DOMAIN Error DOMAIN Er FREQ value in 1 VAR stats 0 or non integer FREQ DOMAIN Error DIVIDE BY 0 You attecmpted to divide by 0 DIVIDE BY 0 Error OVERFLOW Er...

Page 11: ...See Example 10 z Even if the number of decimal places is specified internal calculation for a mantissa is performed in 14 digits for SRP 285 and 24 digits for SRP 280 and the display value is stored i...

Page 12: ...number in the display by 100 You can use this key sequence to calculate percentages add ons discounts and percentages ratios See Example 19 2 5 Continuous calculation function z The calculator enables...

Page 13: ...mat See Example 27 2 9 Angle Unit Conversion The angle units DEG RAD GRAD is set by pressing DRG to display the angle menu The relation among the three angle units is 180 rad 200 grad Angle conversati...

Page 14: ...ple 33 Rectangular Coordinates Polar Coordinates x y i r cos i sin Note When using those key make sure the calculator is set for the angle unit you want 2 13 Probability z Pressing PRB displays the pr...

Page 15: ...uum 299792458 m s g Standard acceleration of gravity 9 80665 m s 2 G Gravitational constant 6 6725985x10 11 N m2kg 2 Vm molar volume of ideal gas 0 0224141 m 3 mol 1 NA Avagadro s number 6 022136736 x...

Page 16: ...d The values is copied to the entry line 4 To predict a value for x or y given a value for y or x select the x or y variable press ENTER enter the given value and press ENTER again Variable Meaning n...

Page 17: ...d h b o or an error message will appear Binary base b 0 1 Octal base o 0 1 2 3 4 5 6 7 Decimal base d 0 1 2 3 4 5 6 7 8 9 Hexadecimal base h 0 1 2 3 4 5 6 7 8 9 A B C D E F Pressing can use block func...

Page 18: ...ue 6 Mode 4 VLE Variable linear equations VLE mode can solve a set of simultaneous equations with two unknowns as follows a x b y c d x e y f where x and y are unknown z In VLE mode you just enter eac...

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