 [. . . ] ENGLISH

FIX/SCI/ENG: Indicates the notation used to display a value. DEG/RAD/GRAD: Indicates angular units. 
STAT

Priority Levels in Calculation
Operations are performed according to the following priority: Q Fractions (1l4,  etc. ) W ,  engineering prefixes E Functions preceded by their argument (x-1,  x2,  n!,  etc. ) R Yx,  x¿ T Implied multiplication of a memory value (2Y,  etc. ) Y Functions followed by their argument (sin,  cos,  etc. ) U Implied multiplication of a function (2sin30,  etc. ) I nCr,  nPr O ×,  ÷ P +,  ­ { AND } OR,  XOR,  XNOR q =,  M+,  M­,  M,  |DEG,  |RAD,  |GRAD,  DATA,  CD,  r,  xy and other calculation ending instructions · If parentheses are used,  parenthesized calculations have precedence over any other calculations. 

SCIENTIFIC CALCULATOR
MODEL

: Appears when statistics mode is selected. : Indicates that the calculator is waiting for a numerical value to be entered,  such as during simulation calculation. : Appears when the calculator shows an angle as the result in the complex calculation mode. 

EL-520W

M

OPERATION MANUAL
PRINTED IN CHINA / IMPRIMÉ EN CHINE / IMPRESO EN CHINA 04CGK (TINSE0730EHZZ)

?

i

: Indicates an imaginary number is being displayed in the complex calculation mode. 

INTRODUCTION
Thank you for purchasing the SHARP Scientific Calculator Model EL-520W.  [. . . ] · The calculation result is automatically stored in the X memory. Y Press ®. 

W

COMPLEX NUMBER CALCULATIONS
To carry out addition,  subtraction,  multiplication,  and division using complex numbers,  press m3 to select the complex number mode. Results of complex number calculations are expressed in two modes: Q @}: Rectangular coordinate mode (xy appears. ) W @{: Polar coordinate mode (r appears. )

· Use K and R to perform a STAT variable calculation. 

Data Entry and Correction
Entered data are kept in memory until @c or mode selection. [Data Entry] Single-variable data Data k Data & frequency k (To enter multiples of the same data) Two-variable data Data x & Data y k Data x & Data y & frequency k (To enter multiples of the same data x and y. ) · Up to 100 data items can be entered. With the single-variable data,  a data item without frequency assignment is counted as one data item,  while an item assigned with frequency is stored as a set of two data items. With the two-variable data,  a set of data items without frequency assignment is counted as two data items,  while a set of items assigned with frequency is stored as a set of three data items. [Data Correction] Correction prior to pressing k immediately after a data entry: Delete incorrect data with ª,  then enter the correct data. Correction after pressing k: Use [] to display the data previously entered. To reverse the display order to descending (latest first),  press the [ key. Each item is displayed with `Xn=',  `Yn=',  or `Nn=' (n is the sequential number of the data set). Display the data item to modify,  input the correct value,  then press k. Using &,  you can correct the values of the data set all at once. 

Complex number entry
Q Rectangular coordinates x-coordinate + y-coordinate Ü or x-coordinate +Ü y-coordinate W Polar coordinates rÖ r: absolute value : argument · On selecting another mode,  the imaginary part of any complex number stored in the independent memory (M) will be cleared. · A complex number expressed in rectangular coordinates with the y-value equal to zero,  or expressed in polar coordinates with the angle equal to zero,  is treated as a real number. · Press 0 to return the complex conjugate of the specified complex number. 

SIMULATION CALCULATION (ALGB)
If you have to find a value consecutively using the same formula,  such as plotting a curve line for 2x2 + 1,  or finding the variable for 2x + 2y =14,  once you enter the equation,  all you have to do is to specify the value for the variable in the formula. Usable variables: A-F,  M,  X and Y Unusable functions: Random function · Simulation calculations can only be executed in the normal mode. · Calculation ending instructions other than = cannot be used. 

ERROR AND CALCULATION RANGES Errors
An error will occur if an operation exceeds the calculation ranges,  or if a mathematically illegal operation is attempted. When an error occurs,  pressing < (or >) automatically moves the cursor back to the place in the equation where the error occurred. Edit the equation or press ª to clear the equation. 

Performing Calculations
Q Press m0. Input the value of the flashing variable,  then press ® to confirm. The calculation result will be displayed after entering the value for all used variables. · Upon completing the calculation,  press @ to perform calculations using the same formula. 

Error Codes and Error Types
Syntax error (Error 1): · An attempt was made to perform an invalid operation. 2 @{ Calculation error (Error 2): · The absolute value of an intermediate or final calculation result equals or exceeds 10100.  [. . . ] Tämä laite täyttää direktiivin 89/336/EEC vaatimukset,  jota on muutettu direktiivillä 93/68/EEC. ÑÌÌÓÂ ÛÒÚÓÈÒÚ, Ó ÒÓÓÚ, ÂÚÒÚ, ÛÂÚ ÚÂ·Ó, ÌËflÏ ËÂÍÚË, ° 89/336/ EEC Ò Û~ÂÚÓÏ ÔÓÔ, ÓÍ 93/68/EEC. módosításában foglalt követelményeknek. Tento pfiístroj vyhovuje poÏadavkÛm smûrnice 89/336/EEC v platném znûní 93/68/EEC. 

· Physical Constants and Metric Conversions are shown in the tables.  [. . . ]