Sight Enhancement Systems SciPlus-3500 User manual

User Guide
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© 2020, Sight Enhancement Systems version 1.2
SciPlus-3500 Scientific Calculator – User Guide
Table of Contents
Getting Started ................................................................................................................................................... 1!
Charging your SciPlus-3500 ................................................................................................................................ 2!
Auto Shutoff ....................................................................................................................................................... 2!
The SciPlus-3500 Display .................................................................................................................................. 3!
SciPlus-3500 Operations .................................................................................................................................... 4!
Soft Keys ............................................................................................................................................................ 4!
A Note Regarding Nomenclature: .................................................................................................................... 4!
Working with Previous Results ......................................................................................................................... 5!
Implied Operators ............................................................................................................................................. 5!
Speech Output ................................................................................................................................................... 6!
Settings ............................................................................................................................................................... 7!
Basic Functions .................................................................................................................................................. 11!
Mathematical Functions ................................................................................................................................... 13!
Trigonometry .................................................................................................................................................... 15!
Converting Angles ............................................................................................................................................ 16!
Converting Coordinates between Polar and Rectangular .............................................................................. 17!
Working With Fractions .................................................................................................................................... 18!
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Memory Operations ......................................................................................................................................... 19!
Statistical Operations ....................................................................................................................................... 21!
Using the SciPlus-3500 to Evaluate Mathematical Functions ........................................................................ 23!
Graphing with Your SciPlus-3500 .................................................................................................................... 28!
Errors ................................................................................................................................................................. 35!
Troubleshooting .............................................................................................................................................. 36!
Service ............................................................................................................................................................... 37!
Warranty ........................................................................................................................................................... 37!
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SciPlus-3500 Scientific Calculator – User Guide
Getting Started
Your SciPlus-3500 calculator performs a wide
variety of mathematical, statistical, and
trigonometric calculations. The speech
output provides an audible description of all
operations.
The SciPlus-3500 also enables you to evaluate
and graph mathematical functions.
This User Guide will explain how to get the
best from your calculator. Let’s first get
familiar with the SciPlus-3500 controls.
Learning Mode: If you press and hold for five seconds the SciPlus-3500 enters “Learning Mode”. In
this mode, the keys do not operate normally. Rather, they simply announce (through the earbuds) their
function. This allows you to become comfortable navigating the keyboard. If you precede a key with it
will speak its alternate function if one exists. Press and hold again to return to normal operation.
“settings”
“soft” keys
“speech”
earbud jack
USB
(on side)
“ENTER”
2nd
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Charging your SciPlus-3500
Charging the calculator is easy. Your SciPlus-3500 calculator includes a USB Wall Charger and cord. Simply
plug the USB wall charger into a regular outlet, and plug the USB cable into the SciPlus-3500. The
calculator should fully charge overnight. On a full battery the SciPlus-3500 will operate for about 6-8 hours
of continuous use. Note this is less than an ordinary calculator because of the bright backlight, which
makes the display much easier to read.
When the SciPlus-3500 is charging, you will notice the battery symbol is animated. The battery is
completely charged if when the animation stops and three solid bars are shown. When the battery
requires recharging, you will hear a beep in your earbuds every 30 seconds.
Note: If your SciPlus has been unused for a very long time, you may need to charge it for a while before
it will even turn on. When this happens, make sure you “RESET” the SciPlus by carefully inserting a
paperclip into the hole on the backside of the calculator. This restores factory settings to ensure proper
operation.
Auto Shutoff
Your SciPlus-3500 calculator will automatically shut off after a few minutes of inactivity. Many of the
calculator’s current settings such as the angle mode, number format, etc., will be saved, so that it will turn
on again in the same state. Values stored in memory and the statistics table are also saved.
If the calculator is left off for an extended period (typically many weeks), these settings may be lost.
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SciPlus-3500 Scientific Calculator – User Guide
The SciPlus-3500 Display
The SciPlus-3500 screen has four lines. The
bottom line with the flashing red cursor is where
you enter expressions. The other three lines
show the results of previous operations. Once
you press an expression is evaluated and its
result is moved up a line, leaving the bottom line
empty to enter another expression.
Note: When lengthy expressions or results do
not fit on the screen you will notice a or as
shown in the diagram. This is to indicate that
characters are hidden to the left or right. Use
the keys to move the cursor. In
expressions use the backspace key to delete
what is to the left of the cursor and edit the
expression.
The characters above the horizontal red line at the top of the screen show the status line of the calculator.
If the battery symbol is animated, this indicates that the battery is being charged. Some of the characters
in the status line may not appear at all times. For example, if there is no entry in memory, or if the statistics
register is currently empty, these items will not appear.
current expression
cursor (flashing)
previous results
battery level
plugged in
statistics array (2 entries)
value saved in memory
display notation:
-Standard, Fixed, Engineering, Scientific
1.367
1.333333333
15
17+SIN(45)
angle notation: Degrees, Radians, Gradians
2nd function (yellow keys)
D STD M Σ:2
MEM
BKSP
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SciPlus-3500 Operations
The SciPlus-3500 follows the “BEDMAS” rule for order of operations:
Brackets è Exponents è Divide è Multiply è Addition è Subtraction
Many of the SciPlus-3500 keys have two functions. The lower function appears in a white font. The
alternate function appears in a yellow font. To access this function, the key must first be pressed. You
will notice a yellow up arrow in the status line when you do this. Throughout the key descriptions below,
if a key symbol appears in a yellow background, this indicates that the key must be used.
Soft Keys
The keys do not have a specific function. Instead, labels at the bottom of the display define
the function of these keys. If there are no labels, these keys will not do anything. You will use these keys
when adjusting the SciPlus-3500’s settings, and for memory and statistics operations, and when using the
function ( ) and graphing ( ) features.
A Note Regarding Nomenclature:
Throughout this manual, a key press is indicated either by the key image or a boldface blue character. For
example, 3 indicates the key on the keyboard. Note that sometimes boldface blue characters might
be implemented using the SciPlus-3500's soft keys .
2nd
2nd
A
B
C
D
f(x)
3
A
B
C
D
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SciPlus-3500 Scientific Calculator – User Guide
Working with Previous Results
When entering expressions in the bottom line, it’s very easy to use the results of previous calculations
displayed in the lines above it. Using the keys, position the cursor at the location in the expression
where you wish to insert a previous result. Now, using the keys, select the previous result that
you wish to insert into the current expression, and press .
Implied Operators
In some cases there is no need to enter in an expression. Here are some examples:
2 (3+1) is the same as 2 × (3+1)
2 sin(30) is the same as 2 × sin(30)
2 π is the same as 2 × π
( 3 + 2 ) ( 7 - 3 ) is the same as ( 3 + 2 ) × ( 7 - 3 )
×
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Speech Output
Your SciPlus-3500 will automatically read the results of expressions when they are evaluated. You will
also notice that the speech output describes settings screens, etc., when they appear. At any time,
pressing a button to continue operations will halt the speech output. To replay previous results, simply
use the key to highlight the line to be read, and select
Turn speech output on/off:
Read status line:
HINT: Always ensure that the volume control on your ear buds is turned up.
2nd
2nd
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SciPlus-3500 Scientific Calculator – User Guide
Settings
There are five settings screens in the SciPlus-3500, accessed by the key. Cycle through the settings
screens using , or by entering 1 through 5. Change settings using the keys.
Number Format (Settings Screen #1)
There are four number formats supported by the SciPlus-3200:
Standard: Numbers show up to ten-digit precision.
Examples: 101, 41250.5, 0.3333333333
Fixed Notation: Number of decimals is fixed.
Examples: 101.00, 41250.50, 0.33
Scientific Notation: Numbers are displayed in powers of ten,
with a fixed number of decimals.
Examples: 1.01E+02, 4.13E+04, 3.30E-01
Engineering Notation: Numbers displayed in powers of … 10-6,
10-3, 100, 103, 106…, with fixed decimal
precision. These steps express values
corresponding with “micro, milli, kilo,
mega, etc.”.
Examples: 101, 41.25E+03, 333E-03
A
B
C
D
STD
FIX
SCI
ENG
0 1 23 4
5 6 7 8 9
NUM FORMAT1
- +
A B C D
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Screen Color Options (Settings Screen #2)
Often, people with low vision are able to benefit from different
color options. Use and to scroll through the available
options.
As you scroll through the options you will notice the calculator
display changes accordingly.
Highlight Color Options (Settings Screen #3)
Highlight colors are used for items like the cursor and overflow
arrows.
Use and to select highlight color #1.
Use and to select highlight color #2.
A
B
A
B
C
D
COLORS
A B C D
BLACK ON WHITE
WHITE ON BLACK
BLACK ON YELLOW
YELLOW ON BLACK
2
HIGHLIGHT COLORS
A B C D
RED
GREEN
ORANGE
RED
GREEN
ORANGE
3
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SciPlus-3500 Scientific Calculator – User Guide
Backlight Brightness (Settings Screen #4)
Use the and softkeys to adjust the brightness of the
backlight. Maximum brightness will create the most contrast in
brightly lit environments. Lowering the brightness will extend the
battery life between charging
Audio Output (Settings Screen #5)
The SciPus-3500 can operate in English, Spanish, French, and
Arabic.
Use the and softkeys to select the language.
The and softkeys adjust the output volume.
A
B
C
D
1 2 34
BACKLIGHT4
- +
A B C D
C
D
ENGLISH
FRANCAIS
ESPANOL
AUDIO
5
- +
A B C D
VOLUME
1 2 3
4 5 6
7 8 9
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Angle Mode (Settings Screen #6)
Use the and softkeys to select the angle mode.
Trigonometry functions and graphing will use degrees, radians, or
gradians based on this setting.
You will see “D”, “R”, or “G” in the status line.
A
B
DEGREES
RADIANS
GRADIANS
ANGLE
6
A B C D
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SciPlus-3500 Scientific Calculator – User Guide
Basic Functions
The tables below describe the functions of the SicPlus-3500 calculator. Note that several examples are
included. You will find that some functions automatically introduce a left bracket “(”, indicating that you
need to enter an expression, which could be as short as a simple number, or a long mathematical
expression. For these functions you must close the expression with a right bracket “)”.
KEY
NAME
DESCRIPTION
2nd Function
Press this key before any dual-function key to access the upper (yellow)
function. You will notice the symbol flashing in the status line.
Note: In this table, if the key symbol at right appears on a yellow
background, the description applies to the upper (yellow) function.
ON/Clear
Turn calculator ON. The cursor will appear on the bottom line. Most of
the settings from the previous session will remain as they were. If the
calculator is already on this key clears the bottom line.
OFF
Save settings, memory and statistics data, and turn calculator OFF.
Backspace
Delete last entry or function.
2nd
CLR
CLR
MEM
BKSP
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KEY
NAME
DESCRIPTION
Enter
( = )
Resolves the current expression, displaying the result in the second line.
If the expression contains errors, an error message will appear.
Clear Screen
then clears the current expression and all previous results.
Open Parentheses
Open parentheses.
Note: Some expressions automatically include the opening parentheses.
Close Parentheses
Close parentheses.
Change Sign
Change the sign of the operand. After some operators (e.g. × ÷), this
operation will insert a negative sign into the expression.
Scientific Notation
This is equivalent to “×10 raised to the power…”
Settings
Manage settings (see section on Settings). Toggles on/off.
(
R P
)
DD
+
/
−
DRG
EE
A
B X
2nd
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SciPlus-3500 Scientific Calculator – User Guide
Mathematical Functions
KEY
NAME
DESCRIPTION
Pi
Enters the symbol π into an expression. If you press then the
result 3.141592654 will be displayed.
Factorial
Calculates the factorial of the value to the left. Enter this after you enter
the value of ‘x’.
X2
Squares the value to the left. Enter ‘x’ first.
e.g: 10 followed by yields a result of 102, or 100.
yx
Raises the value to the left, to an exponent. Enter ‘y’ first. Shown as ‘^’.
e.g.: 2 3 followed by yields a result of 23 or 8.
Reciprocal
Calculates the reciprocal of an expression in brackets.
e.g: 25 4 followed by yields 1/100, or 0.01.
Square Root
Calculates the square root of a value.
e.g.: 4 followed by yields √4, or 2.
nth Root
Calculates the nth root of a value.
e.g.: 3 8 followed by yields the 3√8, or 2.
LOG
Calculates the base10 logarithm of an expression in brackets.
e.g.: 25 4 followed by yields log10(100), or 2.
π
%
x!
1/x
x2
2 x
yx
y x
x!
1/x
x2
2 x
yx
y x
10x
LOG
π
%
x2
2 x
yx
y x
x!
1/x
×
)
x2
2 x
yx
y x
10x
LOG
×
)
2nd
2nd
2nd
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KEY
NAME
DESCRIPTION
Percentage
The behavior of the % function depends upon context.
If the expression is simply a number with the % operator, the result of the
expression is the number divided by 100.
If the % operator is appended to a number which is itself to the right of
the + - × or ÷ operator, the percentage is added to, subtracted from,
multiplied by, or divided by the number to the left of the operator.
e.g.: 3 50 followed by yields a result of 4.5.
If used in a larger expression the operand must be enclosed in brackets.
e.g.: 3 50 1 results in 5.5
If is followed by any operator without a preceding closing bracket as
shown above example, a Syntax Error will result.
LN
Calculates the natural logarithm of an expression.
e.g.: 25 4 followed by yields ln(100), or 4.605170186.
ex
Calculates the value of e (2.2718282) raised to an expression.
e.g.: 2 3 followed by yields e5, or 148.4131591.
10x
Calculates the value of 10 raised to a value.
e.g.: 5 followed by yields 105, or 100000.
π
%
ex
LN
ex
LN
10x
LOG
+
(
R P
)
π
%
+
π
%
+
π
%
ex
LN
×
)
ex
LN
+
)
2nd
2nd
10x
LOG

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SciPlus-3500 Scientific Calculator – User Guide
Trigonometry
Trigonometry functions are very straightforward with the SciPlus-3500. Note that the values used in
trigonometry functions, and the result, are expressed in Degrees, Radians, or Gradians, as indicated by ‘D’
‘R’ or ‘G’ in the status line. The examples shown below assume the SciPlus-3500 is in “DEGREES” mode.
KEY
NAME
DESCRIPTION
Sine
Calculates the sine of an expression.
e.g.: 30 followed by yields 0.5.
Arcsine
Calculates the inverse sine (arcsine) of an expression.
e.g.: 0.5 followed by yields 30.
Convert Angle
converts the current value displayed in the second line, and
changes the status line parameter.
The Cosine and Tangent functions, and their inversions, work the same way.
SIN-1
SIN
SIN-1
SIN
+
/
−
DRG
SIN-1
SIN
)
SIN-1
SIN
2nd
)
2nd
+
/
−
DRG
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Converting Angles
KEY
NAME
DESCRIPTION
Decimal Degrees
to DMS
Converts decimal degrees into degrees, minutes, seconds.
e.g.: 45.5 followed by yields (45,30,0.00).
Note that if the second line is in DD format, entering followed
by converts that value into DMS format.
DMS to Decimal
Degrees
Converts degrees, minutes, seconds into decimal degrees.
e. g.: 45,30,0 followed by yields (45.5)
Note that if the second line is in DMS format, entering followed
by converts that value into DD format.
DMS
,
)
DD
)
2nd
2nd
DMS
,
DMS
,
)
DD
)
DD
2nd
)
DD
2nd
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