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http://sharp-world.com/calculator/
Scientific Calculators
http://sharp-world.com/calculator/
Until the introduction of SHARP's D.A.L., keying in equations had been a
complicated process making scientific calculators difficult to use.
Introduced in 1992 and an industry-first, SHARP's D.A.L. allows symbols
and numbers of an equation to be entered as they are written. Instead of
wasting energy on difficult calculator operations, users are free to
concentrate on mathematical concepts.
•
Numerical Derivative
X=-2
dx=0.001
You can calculate the same derivative calculation repeatedly without having to input
the formula again.
•
Numerical Integral
You can calculate the same integral calculation repeatedly without having to input the
formula again.
[2, 3]
n=100
Simply enter numerical values following the interactive on-screen
instructions, and you can find the answer easily of derivative and integral
calculations. You don't have to re-enter the formula, and the calculation
can be repeated as many times as needed.
Equation y=x
2
Constant and Chain Calculation functions are popular in general
electronic calculators as they allow equations to be entered without
having to key repeatedly. Confusion may arise however, as not all
scientific calculators show the equation being equal to the answer in the
formula display. With SHARP's scientific calculators, the figures you omit
are automatically shown as K (constant) or ANS (answer). Contradictions
between equations and answers are eliminated and calculations are
easier and more logical to enter.
The answer can be used as is in
the next calculation.
•
Chain Calculation
Chain (ANS)
A portion of the equation is
automatically memorised as a
constant, thus omitting redundant
input.
Constant (K )
•
Constant Calculation
tan 30 10 5.773502692
tan 30 20 11.54700538
tan 30 50 28.86751346
Direct Algebraic Logic (D.A.L.)
A 2-line display allows the users to
check the equation and answer at
the same time. Because the
equation remains on display, it is
easy to edit or make substitutions if
necessary.
Display Example
2-Line Display
Numerical Derivative/Integral
SHARP's Multi-Line Playback function lets you recall any of the last 142
steps you have made. This feature is very useful for comparing formulas
and recalculating equations.
sin30 =
x
/ 5
x
= 5
sin30
cos30 =
y
/ 5
y
= 5 cos30
30
5cm
y
x
•
Edit and recalculate
Calculation A'
Calculation A
Edit (sin to cos)
Recalculate
Change the previous equation and recalculate.
•
Comparative learning
The equations are different, but the answers are the same.
Calculation A
(with parentheses)
Calculation B
(without parentheses)
▼
▲
Multi-Line Playback
Constant/Chain Calculations
Note: Even when the power is off, the
equation will remain in memory until a new
equation is stored.
(1) Store the equation into the calculator.
How to use it
(2) Call up the equation.
(3) Use the equation to
calculate.
Cubic volume
of a sphere
r
*Formulas up to 256 characters in length can be stored in F1–F4.
Frequently used formulas or complex equations can be stored as
functions in Formula Memory*. By recalling the formula, you can
substitute new variables into the equation and recalculate it without
having to enter the entire sequence again. Since you can do repeat
equations, it's also convenient for simulations.
Formula Memory
Greater Efficiency and Ease of Use
Equation
Answer
10
(r=10)
1 2
3 4
mat A
3 1
2 6
mat B
7 13
17 27
Solver Function
Matrix Function
This function enables calculation of a variable
in a given equation.
Other variables (a, b, c, etc.) must already be defined in order to
calculate
.
Equation "sin
– 0.5" (DEG)
In addition to the four basic arithmetic functions (excluding division
between matrices),
3
,
2
, and
-1
, users are provided with transpose and
cumulative matrix functions, among others. Up to four matrices can be
saved in memory, each up to four rows by four columns in size.
You have to push the keys in a different
order than the actual equation, making the
input process confusing.
You push the keys in the same order
as the actual equation.
• Non D.A.L. system key operation
10 + 2 sin30
2 30 sin
• D.A.L. system key operation
1 0 3 0
=
+
2
sin
For example, you want to input 10 + 2 sin30 =
▼ ▼ ▼
▼ ▼
3 + 4 25 (3
2
+ 4
2
= 25)
ANS 5
mat A mat B
(Example using EL-506W.)