Fraction Calculations; Initial Setup; Scientific Calculations - Sharp WriteView EL-W531 Operation Manual

• 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:
m
① Fractions (1 4, etc.) ② Functions preceded by their argument
−
x x r ④ Implied multiplication of a memory
x x y
1 2 , n!, etc.) ③
( , ,
value (2Y, etc.) ⑤ Functions followed by their argument (sin, cos,
etc.) ⑥ Implied multiplication of a function (2sin 30, A
× ÷ + −
⑦ nCr, nPr ⑧ ⑨
, ,
+ −
M , M , M, ▶DEG, ▶RAD, ▶GRAD, DATA, CD,
⇒
and other calculation ending instructions
• If parentheses are used, parenthesized calculations have
precedence over any other calculations.
INITIAL SET UP
Mode Selection
NORMAL mode: b 0 (default)
Used to perform arithmetic operations and function calculations.
STAT mode: b 1
Used to perform statistical operations.
DRILL mode: b 2
Used to practice math and multiplication table drills.
SET UP Menu
Press J to display the SET UP
menu.
Press j to exit the SET UP menu.
Determination of the angular unit
The following three angular units (degrees, radians, and grads)
can be specifi ed.
J 0 0 (default)
DEG (°):
RAD (rad): J 0 1
GRAD (g): J 0 2
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 J 1 0 (FIX) or J 1 2 (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 J 1 1 (SCI) is pressed, "SIG(0–9)?" will be
displayed and the number of signifi cant digits can be set to any
value between 0 and 9. Entering 0 will set a 10-digit display.
Setting the fl oating point number system in scientifi c notation
Two settings are used to display a fl oating-point number: NORM1
(the default) and NORM2. A number is automatically displayed in
scientifi c notation outside a preset range:
• NORM1 (J 1 3): 0.000000001
• NORM2 (J 1 4): 0.01
Selecting the editor
Two editors are available in NORMAL mode:
• The WriteView editor (W-VIEW): J 2 0 (default)
• The Line editor (LINE): J 2 1
Adjusting the display contrast
Press J 3, then + or & to adjust the contrast.
Press j to 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 J 4
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 b 0 to select NORMAL mode.
• In each example, press j to clear the display fi rst. Unless
otherwise specifi ed, calculation examples are performed in the
WriteView editor with the default display settings (@ P
0).
Arithmetic Operations
• The closing parenthesis ) just before = or m may
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.
⑩ AND ⑪ OR, XOR, XNOR ⑫
≤ ≤
| x | 9,999,999,999
≤ ≤
| x | 9,999,999,999
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 @ O or @ W in 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
⎯
1
, etc.)
4
be selected while using the N-base function.) To generate
=
,
further random numbers in succession, press e. Press
θ
xy
r
, ,
j to exit.
Random numbers
A pseudo-random number, with three signifi cant digits from 0
up to 0.999, can be generated by pressing @ w 0
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 @ w 1 e.
Random coin
To simulate a coin fl ip, 0 (heads) or 1 (tails) can be randomly
generated by pressing @ w 2 e.
Random integer
An integer between 0 and 99 can be generated randomly by
pressing @ w 3 e.
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 (A–F, X and Y)
Press x and a variable key to store a value in memory.
Press t and a variable key to recall the value from that
3
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 j x M to 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.
θ
r
• ,
x
• Two
STAT mode: X memory (1:), Y memory (2:)
• Use of t or ; will recall the value stored in memory
using up to 14 digits.
Defi nable memories (D1–D4)
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 j to
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 defi nable
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
4
calculation. However, it cannot be recalled after entering
multiple instructions.

Fraction Calculations

5
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.
Notes:
• Improper/proper fractions will be converted to and displayed
as decimal numbers if the number of digits used in their
expression is greater than nine. In the case of mixed
fractions, the maximum number of displayable digits
(including integers) is eight.
• To convert a sexagesimal value to a fraction, fi rst convert it
by pressing @ :.
xy
r x
: X memory ( or ), Y memory (
´ values from a quadratic regression calculation in
6
7
8
θ
y
or )
9
10