Calculator is designed for a variety of
scientific, statistical and computer
uses.It provides many important
functions necessary for complex cal-
culations.
(LCD)
Liquid Crystal Display Format
.....4
Display Symbols .................4
Setting Display Format.............. ....7
Operating the Calculator ...........9
One Factor Operations...........21
FEATURES
Removable protective cover doubles
as a base for the calculator.
Large easy to read LCD (Liquid
Crystal Display).
Binary-Octal-Hexadecimal-Decimal
conversion.
Built-in Random Number Generator.
Built-in Trigonometric and Algebraic
Functions.
23
Two Factor Operations...........21
Correcting Incorrect Entries ......22
Correcting Overflow Errors........23
Scientific Notation...............25
Percentage.................... 26
Logarithm and Exponential.......26
Trigonometric Calculations........27
Applications and Examples.......28
Business......................28
Physics........................28
Civil Engineering................29
Electronics..................... 30
Parallel Resistance..............31
Care and Maintenance ..........32
Replacing The Batteries..........33
Page 3
(LCD) LIQUID CRYSTAL DISPLAY FORMAT
FLOATING POINT DISPLAY
SCIENTIFIC NOTATION DISPLAY
DISPLAY SYMBOLS
–Negative symbol
Indicates the displayed number is a
negative number.
M Memory symbol
Appears when number is stored in
memory.
2ndF Second function symbol
Appears when 2ndF is pressed,
allowing access to alternate key functions.
4
HYP Hyperbolic function
designation symbol
Appears when a hyperbolic function is
designated.
DEGDegree mode symbol
Appears when degree mode is designated or shows that the angular mode
of the converted result is in degrees.
RADRadians mode symbol
Appears when radian mode is designated or shows that theangular
mode of the converted result is in radians.
GRADGrad mode symbol
Appears when grad mode is designated or shows that the angular mode of
the converted result is in grads.
( )Parenthesis symbols
Appears when a calculation with
parenthesis is performed by pressing
the parenthesis key.
5
Page 4
BINBinary mode symbol
Appears when the binary mode is set
or the displayed result is a binary
number.
OCTOctal mode symbol
Appears when the octal mode is set or
the displayed result is an octal number.
HEXHexadecimal mode symbol
Appears when the hexadecimal mode
is set or the displayed result is a he xadecimal number.
CPLX
Complex number mode symbol
Appears when the complex number
mode is set.
STATStatistical mode symbol
Appears when the statistical calculations mode is set.
A calculated result is displayed as a floating point number within the range of:
0.000000001 ≤ 1 x ≤ 9999999999
Results outside this range are displayed in
scientific notation.
SETTING UP DISPLAY FORMAT
Display Format
Press TAB key to change format from
floating point to scientific notion
Change to scientific notion
Change to floating point
Setting Decimal Point
Press 2ndF, TAB and Number of digit
Example: Decimal Point 4
76
Page 5
Example: Decimal Point 6
Please note:
Once the decimal point is set, it will
remain after power is off, to resume
decimal point 2 (default), Please set
the decimal point to 2 again.
Example:
Setting back to Decimal Point 2
OPERA TING THE CALCULA TOR
Power off key
Press to turn off the calculator.
Automatically turns off 8 minutes after last keypress to conserve battery power.
Power on and clear / statistical calculation mode key
Press to turn on the calculator
or to clear the display.
Press to activate statistical
program.The display is
cleared and STAT appears in
the display. In this mode the ),
x -->m, RM and M+ keys function as the n, x, S and DATA
keys respectively. Press 2ndF
to activate the ∑x, ∑x2, Ó
and CD keys.
2nd function key
Press to use alternate functions located above most
keys.
8
9
Page 6
Degree / Radian / Grad
selector / angular unit conversion key
Use to calculate trigonometric
and coordinate conversion.The
DRG key changes the angular
mode with each press:
DEG -> RAD -> GRAD -> DEG.
Used with trigonometric functions for arc hyperbolic calculations.
Trigonometric / Inverse
Trigonometric function keys
DEG MODE - Entries and
results are in decimal degrees.
RAD MODE - Entries and
results are in radians.
Press for the desired trigonometric function. Press 2ndF
first for inverse trigonometric
functions.
GRAD MODE - Entries and
results are in grads.
Display Format Exchange /
Tabulation key
Functions the same as the
DEG key. The displayed number is converted into a number
of the specified angular mode.
Hyperbolic / Arc Hyperbolic
key
Used with trigonometric functions for hyperbolic calcula-
Press to change display for-
mat from floating point to sci-
entific notation and back
again.
Press 2ndF, TAB, then a digit
to specify the number of deci-
mal tab places in the dis-
played result.
tions.
1011
Page 7
Clear Entry / Factorial key
Press to clear the display of
an incorrect number.
Calculates the antilogarithm
base e of the displayed num-
ber.
Calculates the factorial of the
displayed number.
Degree / Minutes / Second ƒ
Decimal degrees conversion
/ Hexadecimal number key
Converts degree / minute /
second to decimal degree.
Press 2ndF first to convert
decimal degree to degree /
minute second.
Hexadecimal number D key
(HEX mode only).
Natural Logarithm /
Antilogarithm number key
Used to obtain the logarithm
base e (e= 2.718281828).
Hexadecimal number E key
(HEX mode only).
12
Common logarithm / antilog-
arithm and hexadecimal
number key
Press to obtain the base 10
logarithm of the displayed
number.
Hexadecimal number F key
(HEX mode only).
Press to obtain the base 10
antilogarithm of the displayed
number.
Real number enter / coordinate conversion key
Used when the real parts of
complex numbers are entered
and when calling the real
parts of calculated results.
13
Page 8
Used during coordinate conversions when entering the x coordinate of the rectangular coordinate (X, Y) or the r of the polar
Right Shift / Complex num-
ber mode key
Press to delete the last num-
ber key pressed.
coordinate. Also displays the
calculated values of X or r.
Press to set the complex number mode.
Press to convert polar coordinates to rectangular
coordinates
.
Enter Exponent / Pi and
Hexadecimal number key
Press to enter a number in
Imaginary number enter /
coordinate conversion key
Press to input the imaginary par ts
scientific notation.
Hexadecimal number A key
(HEX mode only).
of complex numbers or to display
the imaginary par ts of a calculated result.
Displays the value of Pi (π)
Pi= 3.141592654
During coordinate conversions,
press to enter the retangular y
coordinate, or the ø of the polar
y /x√ y and Hexadecimal
number key
coordinates (r, ø).Also used to
display the calculated values of y
or ø.
Raises the displayed number
to a power.
Hexadecimal number B key
Press to convert polar coordinates
(HEX mode only).
to rectangular coordinates.
1415
Page 9
Calculates the Xth root of Y.
Press to enter an open parenthesis in the display.
Square root / cube root and
hexadecimal number key
Press to exchange the displayed number with the number from the working register
Calculates the square root of
(x -> y)
the displayed number.
Hexadecimal number B key
(HEX mode only).
Close parenthesis / statistical calculation key
Calculates the cube root of the
displayed number.
Press to enter a close parenthesis in the display. In statistical mode it displays the
number of the samples
entered. (n)
Square / reciprocal key
Calculates the square of the
Press to obtain the sum of the
data (∑x)
displayed number.
Calculates the reciprocal of
the displayed number.
Open parenthesis /
exchange key
1617
Page 10
Number keys
Press to enter number 0-9.
Division / binary number key
Press for division.
Press to convert the displayed
number to a binary
number(base 2).
Multiplication / Octal number key
Press for multiplication.
Press to convert the displayed
number to an octal
number(base 8).
Subtraction / Hexadecimal
number key
Press for subtraction.
Plus / Decimal number key
Press for addition.
Press to convert the displayed
number to a decimal number
(base 10).
Memory-in / statistical calculation key
Press to store the displayed number into memory.To clear the
memory, press the ON/C key then
the x-> m key. In statistical mode,
press to obtain the mean value of
the data.
Press to obtain the sum of
squares of the data (∑ x^3)
Recall memory / Statistical calculation key
Displays the contents of the memory. In statistical mode, press to
obtain the standard the deviation
of the data simple.
Press to convert the displayed
number to a hexadecimal
number (base 2).
1819
Press to obtain the standard
deviation of the population of
data.
Page 11
Memory plus / DATA CD key
Press to add the displayed num-
ber to the contents of the
Memory.To subtract the displayed
number from the memory, press
the +/- key first.In statistical
mode, press to enter data.
In statistical mode, press to delete
a wrong data entry.
ONE FACTOR OPERATIONS
One-Factor operations require the entry
of only one mathematical function. The
single factor is entered into the calculation when you press the function key. You
do not have to press = to complete the
calculation.
Some one-factor functions include √, cos,
sin, tan and log.
Change sign key
Press to change the displayed
number from positive to negative
and vice versa.
Decimal point / random
number keyPress to
place a decimal point number in
the display.
Press to generate random num-
bers between 0.000 and 0.999
(Decimal mode only).
Equals /Percent key
Displays the results of arith-
metic and complex calcula-
tions.
Used for percentage calcula-
tions.
Example:
sin 90˚ = 1
Enter 90 [ sin ]. 1 is displayed
TWO-FACTOR OPERATIONS
Two-Factor operations require the entry
of at least two mathematical funtions.The
first factor is entered when you press the
function key such as +, --, x, ÷, or yx .
The second factor is entered when you
press the = key and the calculation is
completed.
Example: 7 x 5 = 35
Enter 7 [ x ] 5 [ = ] . 35 is diplayed.
Two factor functions can be chained
together but algebraic hierarchy is always
in effect. To perform a calculation of a
lesser
2120
Page 12
hierarchy first, press [ = ] to perform
the higher hierarchy calculation, then
enter the lower hierarchy calculation
to get an accurate result.
Example: (10 + 5 ) ÷ 3 = 5
CORRECTING OVERFLOW ERRORS
If a calculated result exceeds the display ability or the memory capacity,
the display stops and E appears in
the display. Press [ ON/C ] to
With this method, calculations can be
performed in the proper order.
CORRECTING INCORRECT ENTRIES
If you press the wrong function key (
+, --, x, or ÷ ), just press the correct
function after pressing the wrong
one. The calculator preforms the last
function pressed.
Example: If you press the 5 + -- x 5
=, the displayed result will be 25 as [
x ] was the last function key pressed.
If you press the wrong number key,
press [ ON/C ] once to clear the last
entry, or twice to clear all entries
made. Entries made with the memor y
keys are not affected.
the tip of the calculator with new batteries
following the polarity shown in the illustration.
3.Replace the back cover and screws.
BATTERY PRECAUTIONS
1.Only use the size and type of batteries
specified.
2.Follow the correct polarity when
installing the batteries. Reversed batteries can cause damage to the calculator.
the caclulator’s interal components
can cause a malfunction and invalidate the warranty.
3233
3.If the calculator is not going to be used
for a long period of time, remove the batteries to prevent the damage or injury
from possible battery leakage.
Page 18
Datexx Limited Warranty
This product is warranted against defects for 1 year from
date of purchase. Within this period, we will replace or
repair it, at our option, without charge for parts and labor,
with the exception of accessories such as batteries, wallets,
etc.
Return the defective unit with proof of purchase and a
check or money order for $5.00 (to cover postage, insurance and handling) to T eledex Service Center, 1 Atlas St.,
Kenilworth, NJ, 07033.
This warranty does not cover products subjected to misuse,
accidental damage, or repair by other than TELEDEX. In no
event shall TELEDEX be liable for consequential economic damage or damage to property.
Except as provided herein, DATEXX makes no express
warranties and any implied warranties are limited in duration to the written limited warranties contained herein.
Some states do not permit limitation or exclusion of implied
warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purchaser.
This warranty gives you specific legal rights and you may
also have other rights which vary from state to state.