United Office LCD−8310 User Manual
SCIENTIFIC CALCULATOR
LCD−8310
Gi
USER’S GUIDE
Olympia Business Systems Vertriebs GmbH
Weg zum Wasserwerk 10
45525 Hattingen
Safety Information 4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intended Use 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Batteries 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disposal instructions 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautionary Measures When Using the Calculator 4. .
Two−line Display 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before Starting to Calculate..... 6. . . . . . . . . . . . . . . . . .
Modes 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input capacity 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making corrections during input 6. . . . . . . . . . . . . . . . . . . . . . .
Replay function 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error locator 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exponential display formats 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Answer memory 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Calculations 8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Calculations 8. . . . . . . . . . . . . . . . . . . . . . . . . .
Independent memory 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Variables 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fraction calculations 9. . . . . . . . . . . . . . . . . . . . . . . . . .
Decimal−to−Fraction Conversion 9. . . . . . . . . . . . . . . . . . . . . . .
Fraction−to−Decimal Conversion 9. . . . . . . . . . . . . . . . . . . . . . .
Percentage calculation 9. . . . . . . . . . . . . . . . . . . . . . . .
Calculations Using Scientific Functions 10. . . . . . . . . . .
Trigonometric/Inverse trigonometric functions 10. . . . . . . . . . . . .
Hyperbolic/Inverse hyperbolic functions 11. . . . . . . . . . . . . . . . . .
Angle Unit Conversion 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common and natural logarithms / antilogarithms 11. . . . . . . . . . .
Square Roots, Cube Roots, Roots, Squares, Cubes, Reciprocals,
Factorials, Random Numbers and π 11. . . . . . . . . . . . . . . . . . . .
FIX, SCI, RND 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENG Calculations 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coordinate conversion (Pol (x, y), Rec (r, θ)) 13. . . . . . . . . . . . . .
Permutation 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Statistical Calculations 14. . . . . . . . . . . . . . . . . . . . . . . .
Standard Deviation (SD mode) 14. . . . . . . . . . . . . . . . . . . . . . . .
Precautionary measures when entering data 14. . . . . . . . . . . . . .
Regression calculation (REG mode) 15. . . . . . . . . . . . . . . . . . . .
Linear regression 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quadratic regression 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautionary measures when entering data 17. . . . . . . . . . . . . .
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Degrees, Minutes, Seconds Calculations 17. . . . . . . . . . .
Technical Information 17. . . . . . . . . . . . . . . . . . . . . . . . .
Error messages 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Order of Operations 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stacks 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the Battery 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Power Off 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input ranges 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guarantee 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
LCD−8310
Scientific Calculator
Safety Information
It is essential to read the following safety information before starting to use
the calculator. Keep this guide close to hand for reference later.
Intended Use
This calculator serves exclusively for completing arithmetical processes
indoors. Any other use is considered unintended use.
Batteries
l After removing the batteries from the calculator, put them in a safe
place where there is no danger of them getting into the hands of
small children and accidently swallowed.
l Keep batteries out of the reach of small children. If accidently
swallowed, consult with a physician immediately.
l Never charge batteries, try to take batteries apart, or allow batteries
to become shorted. Never expose batteries to direct heat or dispose
them by incineration.
l Misuse of batteries can cause them to leak and damage nearby
items. They also create the risk of fire and personal injury.
l Always make sure that a battery’s positive (+) and negative (−) sides
are facing correctly when you load it into the calculator.
l Remove the batteries if you do not plan to use the calculator for a
long time.
l Use only the type of batteries specified for this calculator in this
manual.
Disposal instructions
The implementation of European law in domestic
legislation and national regulations requires a suitable
disposal of durable goods. The aim is to protect people
and the environment. The symbol on the side indicates
that old electrical and electronic devices should not be
disposed of in domestic waste.
After devices and equipment have reached the end of
their service life, they must be brought to a collection
point provided by an authorised waste disposal enterprise.
Old batteries must be returned to the point−of−sale or to a collection
point provided by an authorised waste disposal enterprise.
Packing material must be disposed of according to local regulations.
Precautionary Measures When Using the Calculator
l It is essential to press the key before using the calculator for the
first time.
l Be sure to press the Reset button on the back of the calculator
before using it for the first time.
l Dead battery can leak, causing damage to and malfunction of the
calculator. Never leave the dead battery in the calculator.
l The battery that comes with the unit discharges slightly during
shipment and storage. Because of this, it may require replacement
sooner than the normal expected battery life.
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l Low battery power can cause memory contents to become corrupted
or lost completely. Always keep written records of all important data.
l Avoid use and storage in areas subjected to temperature extremes.
Very low temperatures can cause slow display response, total failure
of the display, and shortening of battery life. Also avoid leaving the
calculator in direct sunlight, near a window, near a heater or
anywhere else it might become exposed to very high temperatures.
Heat can cause discoloration or deformation of the calculator’s case,
and damage to internal circuitry.
l Avoid use and storage in areas subjected to large amounts of
humidity and dust. Take care never to leave the calculator where it
might be splashed by water or exposed to large amounts of humidity
or dust. Such elements can damage internal circuitry.
l Never drop the calculator or otherwise subject it to strong impact.
l Never twist or bend the calculator. Avoid carrying the calculator in
the pocket of your trousers or other tight−fitting clothing where it
might be subjected to twisting or bending.
l Never try to take the calculator apart.
l Never press the keys on the calculator with a ballpoint pen or
another pointed object.
l Use a soft, dry cloth to clean the exterior of the unit. If the calculator
becomes very dirty, wipe it off with a cloth moistened in a weak
solution of water and a mild neutral household detergent. Wring out
all excess moisture before wiping the calculator. Never use thinner,
benzine or other volatile agents to clean the calculator. Doing so can
remove printed markings and damage the case.
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Two−line Display
You can simultaneously check the calculation formula and its answer. The
first line displays the calculation formula. The second line displays the
answer.
Before Starting to Calculate.....
Modes
Application Mode
name
Calculation modes
Normal calculations COMP −−
Standard deviation calculations SD SD
Regression calculations REG REG
Angle Unit Modes
Degrees Deg D
Radians Rad R
Grads Gra g
Display Modes
Exponential notation (Canceling FIX and SCI
specification)
NORM 1
NORM 2−−−−
Number of decimal place specification Fix Fix
Number of significant digit specification Sci Sci
Note!
l Mode indicators appear in the lower part of the display.
l The COMP, SD and REG modes can be used in combination with the
angle unit modes.
l Be sure to check the current calculation mode (SD, REG, COMP)
and angle unit mode (DEG, RAD, GRA) before beginning a
calculation.
Input capacity
l The memory area used for calculation input can hold 79 "steps".
Whenever you input the 73rd step of any calculation, the cursor
changes from
you still need to input more, you should divide your calculations into
two or more parts.
" to J to let you know memory is running low. If
Making corrections during input
l Use and to move the cursor to the location you want.
l Press to delete the number or function at the current cursor
position.
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Mode
identification
l Press to change to an insert cursor . Inputting something
while the insert cursor is on the display inserts the input at the insert
cursor position.
l Press , , or returns to the normal cursor from
the insert cursor.
Replay function
l Pressing or recalls the last calculation you performed. You
can then make any changes you want in the calculation and
reexecute it.
l Pressing does not clear Replay memory, so you can recall the
last calculation even after you press
l Replay memory is cleared whenever you start a new calculation,
change to another mode or turn off power.
.
Error locator
l Pressing or after an error occurs displays the calculation
with the cursor positioned at the location where the error occured.
Exponential display formats
This calculator can display up to 10 digits. Larger values are automatically
displayed using exponential notation. In the case of decimal values, you
can select between two formats that determine at what point exponential
notation is used.
Press
(or ) to select NORM 1 or
NORM 2.
l NORM 1
With NORM 1, exponential notation is automatically used for integer values
with more than 10 digits and decimal values with more than two decimal
places.
l NORM 2
With NORM 2, exponential notation is automatically used for integer values
with more than 10 digits and decimal values with more than nine decimal
places.
l All of the examples in this manual show calculation results using the
NORM 1 format.
Answer memory
l Whenever you press after inputting values or an expression, the
calculated result is automatically stored in Answer Memory. You can
recall Answer Memory contents by pressing
l Answer Memory can store up to 12 digits for the mantissa and two
digits for the exponent.
l Answer Memory contents are not changed if the operation performed
by any of the above key operations results in an error.
.
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Basic Calculations
Note!
Use the
calculations.
COMP:
key to activate COMP mode in order to carry out basic
Example 1.: 3x(5x10−9)
3
5 9
1.5
Example 2.: 5x(9+7)
5
9 7
Memory Calculations
Note!
Use the
using the memory.
COMP:
Independent memory
l The values can be entered directly in the memory or added to and
subtracted from the memory. Independent memory is convenient for
calculating cumulative totals.
l Independent memory uses the same memory area as variable M.
l To clear independent memory, input .
Example 1.:
Variables
l There are nine variables (A through F, M, X and Y), which can be
used to store data, constants, results and other values.
l Use the following operation to delete data assigned to all nine
variables:
l Use the following operation to delete data assigned to a particular
variable:
variable A.
key to activate COMP mode to complete calculations
23+9=32
53ï6=47
ï)45x2=90
(Total) ï11
23
9
53 6
45 2
key.
. This operation deletes the data assigned to
−08
80.
32.
47.
90.
−11.
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