Sharp EL-W531, EL-W531G, EL-W531H, EL-W531HA, EL-W535 Priority Levels in Calculation, INITIAL SET UP, Mode Selection, SET UP Menu, SCIENTIFIC CALCULATIONS, Arithmetic Operations, Constant Calculations, Functions

•Equations that have one result require an additional eleven characters’ worth of memory to store in order to hold the result.

•In addition to the amount of memory needed to store an equation, the WriteView editor will require a certain amount for the sake of display.

•Equations also include calculation ending instructions, such as “=”.

Priority Levels in Calculation

This calculator performs operations according to the following priority:

①Fractions (1m4, etc.) ② Functions preceded by their argument (x−1, x2, n!, etc.) ③ yx, xr ④ Implied multiplication of a memory value (2Y, etc.) ⑤ Functions followed by their argument (sin, cos,

etc.) ⑥ Implied multiplication of a function (2sin 30, A ⎯1 , etc.)

⑦nCr, nPr ⑧ ⋅, ⎟ ⑨ +, − ⑩ AND ⑪ OR, XOR, XNOR ⑫ =, M+, M−, ⇒M, ▶DEG, ▶RAD, ▶GRAD, DATA, CD, →rθ, →xy, and other calculation ending instructions

• If parentheses are used, parenthesized calculations haveprecedence over any other calculations.4

INITIAL SET UP

Mode Selection

NORMAL mode: b0(default)Used to perform arithmetic operations and function calculations.STAT mode: b1Used to perform statistical operations.DRILL mode: b2Used to practice math and multiplication table drills.

SET UP Menu

Press Jto display the SET UP menu.Press jto exit the SET UP menu.Determination of the angular unit

The following three angular units (degrees, radians, and grads) can be speciﬁ ed.

DEG (°): J00(default)RAD (rad): J01GRAD (g): J02

Selecting the display notation and decimal places

Five display notation systems are used to display calculation results: Two settings of Floating point (NORM1 and NORM2), Fixed decimal point (FIX), Scientiﬁ c notation (SCI), and Engineering notation (ENG).

•When J10(FIX) or J12(ENG) is pressed, “TAB(0–9)?” will be displayed and the number of decimal places (TAB) can be set to any value between 0 and 9.

•When J11(SCI) is pressed, “SIG(0–9)?” will be displayed and the number of signiﬁcant digits can be set to any value between 0 and 9. Entering 0 will set a 10-digit display.

Setting the ßoating point number system in scientiÞc notation

Two settings are used to display a ﬂ oating-point number: NORM1 (the default) and NORM2. A number is automatically displayed in scientiﬁc notation outside a preset range:

•NORM1 (J13): 0.000000001 ≤ x ≤ 9,999,999,999•NORM2 (J14): 0.01 ≤ x ≤ 9,999,999,999Selecting the editorTwo editors are available in NORMAL mode:•The WriteView editor (W-VIEW): J20(default)•The Line editor (LINE): J21Adjusting the display contrast

Press J3, then +or &to adjust the contrast. Press jto exit.

Insert and overwrite entry methods

When using the Line editor, you can change the entry method from “INSERT” (the default) to “OVERWRITE”.

After you switch to the overwrite method (by pressing J4 1), the triangular cursor will change to a rectangular one, and the number or function underneath it will be overwritten as you make entries.

SCIENTIFIC CALCULATIONS

•Press b0to select NORMAL mode.

•In each example, press jto clear the display ﬁrst. Unless otherwise speciﬁed, calculation examples are performed in the WriteView editor with the default display settings (@P 0).

Arithmetic Operations

•The closing parenthesis )just before =or mmay be omitted.

Constant Calculations

•In constant calculations, the addend becomes a constant. Subtraction and division are performed in the same manner. For multiplication, the multiplicand becomes a constant.

•In constant calculations, constants will be displayed as K.

Functions

•Refer to the calculation examples for each function.•In the Line editor, the following symbols are used:•: to indicate an expression’s power. (m, @",@Y)• : to separate integers, numerators, and denominators. (W, @k)•When using @Oor @Win the Line editor, values are entered in the following way:•logn (base, value)•abs value

Random Function

The random function has four settings. (This function cannot be selected while using the N-base function.) To generate further random numbers in succession, press e. Press jto exit.

Random numbers

A pseudo-random number, with three signiﬁcant digits from 0 up to 0.999, can be generated by pressing @w0 e.

Note: In the WriteView editor, the result will be a fraction or 0.Random dice

To simulate a die-rolling, a random integer between 1 and 6 can be generated by pressing @w1e.

Random coin

To simulate a coin ﬂ ip, 0 (heads) or 1 (tails) can be randomly generated by pressing @w2e.

Random integerAn integer between 0 and 99 can be generated randomly by pressing @w3e.

Angular Unit Conversions

Each time @]is pressed, the angular unit changes in sequence.

Memory Calculations

Memory calculations can be performed in NORMAL and STAT modes.Temporary memories (AÐF, X and Y)

Press xand a variable key to store a value in memory. Press tand a variable key to recall the value from that memory. To place a variable in an equation, press ;and a variable key.

Independent memory (M)

In addition to all the features of temporary memories, a value can be added to or subtracted from an existing memory value. Press jxMto clear the independent memory (M).

Last answer memory (ANS)

The calculation result obtained by pressing =or any other calculation ending instruction is automatically stored in the last answer memory.

Notes:

•Calculation results from the functions indicated below are automatically stored in the X or Y memories replacing any existing values.

•→rθ, →xy: X memory (r or x), Y memory (θ or y)

•Two x´ values from a quadratic regression calculation in STAT mode: X memory (1:), Y memory (2:)

•Use of tor ;will recall the value stored in memory using up to 14 digits.DeÞnable memories (D1ÐD4)You can store functions or operations in deﬁ nable memories (D1–D4).

•To store a function or operation, press x, followed by a deﬁ nable memory key (I, J, K, or L), followed by the operation you want to store. Menu-related operations, such as J, cannot be stored. Press jto return to the previous display.

•To call a stored function or operation, press the corresponding memory key. Calling a stored function will do nothing if the function that is called would be unusable in the current context.

•Any functions or operations that are stored in a deﬁnable memory will be replaced when you save a new one into that memory.

•When displaying and correcting a data set in STAT mode, you cannot store functions or operations in deﬁ nable memories.

Chain Calculations

The previous calculation result can be used in the subsequent calculation. However, it cannot be recalled after entering multiple instructions.

Fraction Calculations

Arithmetic operations and memory calculations can be performed using fractions. In NORMAL mode, conversion between a decimal number and a fraction can be performed by pressing U.