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FX-55
User Manual
20 pgs701.88 Kb0

Casio FX-55, FX55PLUSTP, EDWKBK55PLUS, FX55BU-TP, fx55Plus User Manual

fx-55 PLUS
User’s Guide
E
CASIO Worldwide Education Website
http://edu.casio.com
CASIO EDUCATIONAL FORUM
http://edu.casio.com/forum/
Contents
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Important Information
The displays and illustrations (such as key markings) shown in this User’s
• Guide are for illustrative purposes only, and may differ somewhat from the actual items they represent. The contents of this manual are subject to change without notice.
• In no event shall CASIO Computer Co., Ltd. be liable to anyone for special,
• collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of this product and items that come with it. Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of any kind whatsoever by any other party arising out of the use of this product and the items that come with it. Be sure to keep all user documentation handy for future reference.
•
Sample Operations
Sample operations in this manual are indicated by a icon. Unless specifically stated, all sample operations assume that the calculator is in its initial default setup. Use the procedure under “Initializing the Calculator” to return the calculator to its initial default setup. For information about the K and L marks that are shown in the sample operations, see “Configuring the Calculator Setup”.
Initializing the Calculator
Perform the following procedure when you want to initialize the calculator and return the setup to their initial default settings. Note that this operation also clears all data currently in calculator memory.
r3(All)=(Yes)
Safety Precautions
Battery
Keep batteries out of the reach of small children.
• Use only the type of battery specified for this calculator in this manual.
•
Handling Precautions
Even if the calculator is operating normally, replace the battery at least
• once every three years (LR44 (GPA76)).
A dead battery can leak, causing damage to and malfunction of the calculator. Never leave a dead battery in the calculator. Do not try using the calculator while the battery is completely dead.
The battery that comes with the calculator discharges slightly during
• shipment and storage. Because of this, it may require replacement sooner than the normal expected battery life. Do not use an oxyride battery* or any other type of nickel-based
• primary battery with this product. Incompatibility between such batteries and product specifications can result in shorter battery life and product malfunction. Avoid use and storage of the calculator in areas subjected to
• temperature extremes, and large amounts of humidity and dust.
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Do not subject the calculator to excessive impact, pressure, or
• bending.
•
Never try to take the calculator apart.
•
Use a soft, dry cloth to clean the exterior of the calculator.
•
Whenever discarding the calculator or batteries, be sure to do so in accordance with the laws and regulations in your particular area.
* Company and product names used in this manual may be registered
trademarks or trademarks of their respective owners.
Removing the Hard Case
Before using the calculator, slide its hard case downwards to remove it, and then affix the hard case to the back of the calculator as shown in the illustration nearby.
Turning Power On and Off
Press O to turn on the calculator. Press 1A(OFF) to turn off the calculator.
Auto Power Off
Your calculator will turn off automatically if you do not perform any operation for about 10 minutes. If this happens, press the O key to turn the calculator back on.
Adjusting Display Contrast
Display the CONTRAST screen by performing the following key operation: s8(]CONT'). Next, use d and e to adjust contrast. After the setting is the way you want, press A.
Important: If adjusting display contrast does not improve display readability, it probably means that battery power is low. Replace the battery.
Key Markings
Pressing the 1 key followed by a second key performs the alternate function of the second key. The alternate function is indicated by the text printed above the key.
Alternate function
OFF
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A
Keycap function
Reading the Display
The display of the calculator shows expressions you input, calculation results, and various indicators.
Math
Input expression
Calculation result
If a g indicator appears on the right side of the input expression, it means
• the displayed calculation continues to the right. Use e and d to scroll the input expression display.
Display indicators
Indicators
This indicator:
Means this:
The keypad has been shifted by pressing the 1 key. The
S
keypad will unshift and this indicator will disappear when you press a key.
M There is a value stored in independent memory.
FIX A fixed number of decimal places is in effect.
Appears when natural calculation formula input (using
Math
the same format as a formula is written) is enabled. Also appears when LineO is selected as the display format.
Calculation history memory data is available and can be
$`
replayed, or there is more data above/below the current screen.
Appears when “Manual” is selected for the “Simp” setting on the setup menu, and indicates that the fraction result of a calculation can be simplified.
Important: For some type of calculation that takes a long time to execute, the display may show only the above indicators (without any value) while it performs the calculation internally.
Configuring the Calculator Setup
Press s to display the setup menu. Press the number key for the item you want to configure. To close the setup menu without changing any setting, press A or s. Underlined ( ___ ) settings are initial defaults.
1MathO 2LineO Specifies the display format. MathO displays input and calculation results using
the same format as they are written on paper.
LineO displays input the same way as MathO, but calculation results are displayed in decimal form.
Note: In this manual, the K symbol next to a sample operation indicates MathO, while the L symbol indicates LineO.
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MathMath
MathMath
3Fix 4Norm Specifies the number of digits for display of a calculation result. Fix: The value you specify (from 0 to 9) controls the number of decimal places for displayed calculation results. Calculation results are rounded off to the specified digit before being displayed.
Example: L 100 ÷ 7 = 14.286 (Fix 3)
14.29 (Fix 2)
Norm: Selecting one of the two available settings (Norm 1, Norm 2) determines the range in which results will be displayed in non-exponential format. Outside the specified range, results are displayed using exponential format. Norm 1: 10 Example: L 1 ÷ 200 = 5 × 10–3 (Norm 1)
0.005 (Norm 2)
5ab/c 6 d/c Specifies either mixed fraction (ab/c) or improper fraction (d/c) for display of fractions in calculation results.
7Simp 1Auto ; 2Manual Specifies automatic or manual simplification of fractions. When manual is specified, fraction calculation results are always displayed as improper fractions, even if the fraction display format setting is ab/c. Even if the result of a calculation can be displayed as a fraction when automatic simplification is used, performing the same calculation with manual simplification may produce a non-fraction (decimal) result.
–2
|x|, |x| 1010 Norm 2: 10–9 |x|, |x| 10
10
Example:
sh(Simp)b(Auto)
2
2
3
1
×
5
8
41
k 2 e 2 c 3 e*k 5 e 1 c 8 = 
3
sh(Simp)c(Manual)
k 2 e 2 c 3 e*k 5 e 1 c 8 =
328
24
8]CONT' Adjusts display contrast. See “Adjusting Display Contrast” for details.
Initializing Calculator Settings
Perform the following procedure to initialize the calculator, which returns all settings, including setup menu settings, to their initial defaults.
f1(Setup)=(Yes)
Inputting Expressions and Values
Basic Input Rules
Calculations can be input in the same form as they are written. When you press = the priority sequence of the input calculation will be evaluated automatically and the result will appear on the display.
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