Ataba Co DS737CQ Owner's Manual

Before Starting Calculations

Operation Modes

When using this calculator, it is necessary to select the
proper mode to meet your requirements. This can be
done by pressing [MODE] to view the main menu and
select the appropriate mode by moving the cursor to the
right or the left.
Press [MODE] once to read the first page of the main
menu.
Press [→] to select the mode.
As the icons [→] or [←] appear, one can press [→] or [←
] correspondingly to view the hidden menu.
2-lines display
Scientific Calculator
After locating the desired mode, press [=] to confirm and
leave the main menu.
Or if you want to define the "degree" or "radian" or
"gradient", you can press [MODE] again during the
with
display of "mode-selection" menu mentioned above.
fractional, statistical,
Press [MODE] again. (This sub-menu will be skipped in
formula memory,
Base-N mode.)
equation solving
functions
Select the angular unit by pressing [←] or [→] then
followed by [ = ].
Or if you want to define the answer display format, you
can proceed to the following page by pressing [MODE]
further. (This sub-menu will be skipped in Base-N mode.)
Press "MODE" once more to leave the menu.
Please read before using.

Safety Precautions

Calculation Modes

"COMP" mode : - general calculations, including function
Be sure to read the following safety precautions before calculations can be executed.
using this calculator. Keep this manual handy for later "CMPLX" mode:- calculations including complex numbers
reference.
can be executed.
"SD" mode:- standard deviation calculation can be
Batteries executed. "SD" symbol appears in display.
"REG" mode:- regression calculations can be performed.
• After removing the batteries from the calculator, put "LR" symbol appears in display.
them in a safe place where there is no danger of them "BASE-N" mode:- binary, octal, decimal, hexadecimal
getting into the hands of small children and accidently conversion and calculations, as well as logical operations
swallowed. can be carried out.
• Keep batteries out of the reach of children. If accidentally
swallowed, consult with a physician immediately. Note:-
• Never charge batteries, try to take batteries apart, or
• The five calculation modes listed above are totally
allow batteries to become shorted. Never expose independent, and cannot be used together.
batteries to direct heat or dispose of them by • The calculation mode last selected is retained in memory
incineration. when the power is switched OFF.
• Misuse of batteries can cause them to leak acid that can
cause damage to nearby items and creates the Angular Measurement Modes
possibility of fire and personal injury. "DEG" mode:- specify measurement in "degrees". "D"
• Always make sure that a battery's positive (+) and symbol appears in display window.
negative (–) sides are facing correctly when you load it "RAD" mode:- specify measurement in "radians". "R"
into the calculator. symbol appears in display window.
• Remove the batteries if you do not plan to use the "GRA" mode:- specify measurement in "grads". "G"
calculator for a long time. symbol appears in display window.
• Use only the type of batteries specified for this calculator
in this manual. With the exception of the BASE-N mode, these three
angular measurement modes
Disposing of the Calculator combination with the manual calculation modes.
• Never dispose of the calculator by burning it. Doing so
can cause certain components to suddenly burst, Display Modes
creating the danger of fire and personal injury. "FIX" mode:- specify number of decimal places. "FIX"
• The displays and illustrations (such as key markings) symbol appears in display window.
shown in this Owner's Manual are for illustrative "SCI" mode:- specify number of significant digits. "SCI"
purposes only, and may differ somewhat from the actual symbol appears in display window.
items they represent. "NORM" mode:- cancels "Fix" and "Sci" specifications. This
• The contents of this manual are subject to change operation also changes the range of the exponent display.
without notice. When the results exceed the following limits, exponent is
to be displayed.
Norm 1 :- 10
Norm 2 :- 10
In combination with "FIX", "SCI" or "NORM" mode, you can
cause the exponent display for the number being
– 1 –
Handling Precautions displayed to change in multiples of 3 by pressing the
[ENG] key .
• Be sure to press the "ON" key before using the calculator
for the first time. • With the exception of the BASE-N mode, "FIX", "SCI" and
"NORM" modes can be used in combination with the
• Even if the calculator is operating normally, replace the
battery at least once every three years. Dead battery can manual calculations.
leak, causing damage to and malfunction of the • Engineering display format is not available in "CMPLX"
calculator. Never leave the dead battery in the calculator. mode.
• The battery that comes with this unit discharges slightly • The display mode last selected is retained in memory
when the power is switched OFF.
during shipment and storage. Because ofthis, it may
require replacement sooner than the normal expected
battery life. Calculation Priority Sequence
• Low battery power can cause memory contents to This calculator employs true algebraic logic to calculate
become corrupted or lost completely. Always keep the parts of a formula in the following order :-
1. Coordinate transformation / integration, Pol(x, y),Rec(r,
written records of all important data.
• Avoid use and storage in areas subjected to temperature ), ∫dx
extremes. Very low temperatures can cause slow display 2. Type A functions :-
response,total failure of the display, and shortening of These functions are those in which the value is entered
battery life.Also avoid leaving the calculator in direct and than the function key is pressed, such as x
º ''', Engineering symbols.
sunlight, neara window, near a heater or anywhere else it
might become exposed to very high temperatures. Heat 3. Power / root, x
can cause discoloration or deformation of the 4. Fractions, a
calculator's case, anddamage to internal circuitry. 5. Abbreviated multiplication format in front of π, memory
• Avoid use and storage in areas subjected to large or parenthesis, such as 2π, 5A, π6. R, etc.
6. Type B functions :-
amounts of humidity and dust. Take care never to leave
the calculator where it might besplashed by water or These functions are those in which the function key is
exposed to large amounts of humidity or dust. Such pressed and then the value is entered such as √,
x
elements can damage internal circuitry. ln, e , 10
–1
• Never drop the calculator or otherwise subject it to sinh , cosh
BASE-N mode only) d, H, b, o, Neg, Not.
strong impact.
• Never twist or bend the calculator. Avoid carrying the 7. Abbreviated multiplication format in front of Type B
calculator in the pocket of your trou-sers or other functions, such as, 2√3, A log2, etc.
tight-fitting clothing where it might be subjected to 8. Permutation, combination, nPr, nCr
twisting or bending. 9. , 
10. , 
• Never try to take the calculator apart.
• Never press the keys of the calculator with a ball-point 11. and ( in BASE-N mode only )
pen or other pointed object. 12. or, xor, xnor ( in BASE-N mode only )
• Use a soft, dry cloth to clean the exterior of the unit. If the
calculator becomes very dirty, wipe it off with acloth • When functions with the same priority are used in series,
execution is performed from right to left for :- e
moistened in a weak solution of water and a mildneutral
x
household detergent. Wring out all excess moisture ➞ e {ln(√120)}. Otherwise, execution is from left to right.
before wiping the calculator. Never use thinner, benzine • Operations enclosed in parentheses are performed first.
or other volatile agents to clean the calculator. Doing so
can remove printed markings and damage the case. Number of Stacks
There is a memory area known as a "stack" for the
temporary storage of low priority numeric values and
commands ( functions, etc. ). The numeric value stack has
– 2 –
Two-lines Display nine levels, while the command stack has 24. If a complex
formula is employed that exceeds the stack space
available, a stack error (Stk ERROR) message will appear on
the display.
i i
Calculations are performed in the order of the highest
M S H A STO RCL CMPLX SD LR PAUSE D R G FIX SCI ENG
calculation priority first. Once a calculation is executed, it
You can simultaneously check the calculation formula and is cleared from the stack.
its answer. The first line displays the calculation formula.
Number of Input/output Digits and Calculation Digits
The second line displays the answer.
The allowable input/output range (number of digits) of
this unit is 10 digits for a mantissa and 2 digits for the

Keys Layout

exponent. Calculations, however, are performed internally
with a range of 12 digits for a mantissa and 2 digits for an
exponent.
Mcl Scl
Example: 3  10
SHIFT ON
ALPHA
MODE ÷
3[EXP]5[
÷
3[EXP]5[
x
3 LOGIC
3 y
SOLVE CALC IN OUT x x
x x
i d /c x x e

Overflow and Errors

–1 10
! DEC HEX BIN OCT
If the operational range of the unit is exceeded, or
a b /c x 2 log ln
ENG
[d] [h] [b] [o]
incorrect inputs are made, an error message will appear
∫dx A B C sin –1 D cos –1 E tan –1 F
on the display and subsequent operation will be
,,,
(–) hyp sin cos tan
º
impossible. This is carried out by the error check function.
;
The following operations will result in errors :-
: = r
arg Abs X Y M– M
,
STO RCL ( ) M+
1. The answer, whether intermediate or final, or any value
DT CL
in memory exceeds the value of ±9.999999999  10
A B C INS OFF
2. An attempt is made to perform function calculations
7 8 9
DEL AC
that exceed the input range.
3. Improper operation during statistical calculations, e.g.,
y y y
–1 nPr nCr
n n
attempting to obtain x or xn without data input.
÷
4 5 6 4. The capacity of the numeric value stack or the
command stack is exceeded.
x x x x y
Pol( Rec( 5. Input errors are made, e.g. 5   3 = .
n n –1
+
1 2 3
–
When error message appears, most keys will become
π
% inoperative. In this case, press the [AC] key to return to
Rnd Ran# DRG Re Im
normal operation. You can also press the [←] or [→] key
=
0 • Ans
EXP
to cause the cursor to show the position of the error.
The following error messages will be displayed for the
operations listed above:-
– 3 –
case (1) to case (3)
case (4)
case (5)
Besides pressing [AC] when an error occurs, you can also
press [ON] key to clear the error.
Number of Input Characters
This calculator features a 79-step area for calculation
execution. One function comprises one step. Each press
of numeric or  ,  ,  and  keys comprise one step.
C OM P CMP LX
Though such operations as [SHIFT] [x!] (x
two key operations, they actually comprise only one
function, and, therefore, only one step. These steps can be
confirmed using the cursor. With each press of the [←] or
C OM P CMP LX
[→] key, the cursor is moved one step.
Input characters are limited to 79 steps. Usually, the cursor
is represented by a blinking " _ ".
SD REG BASE
When numeric values or calculation commands are input,
they appear on the display from the left. Calculation
results, however, are displayed from the right.
Corrections
To make corrections in a formula that is being input, use
the [←] and [→] keys to move to the position of the error
and press the correct keys.
Example: To change an input of 122 to 123 :-
[1] [2] [2]
DE G RAD GRA
[←]
[3]
Example: To change an input of cos60 to sin60 :-
[cos]60
FI X SCI NORM
[←][←][←]
[sin]
– 4 –
If after making corrections, input of the formula is
complete, the answer can be obtained by pressing [ = ]. If,
however, more is to be added to the formula, advance the
cursor using the [→] key to the end of the formula for
input.
If an unnecessary character has been included in a
formula, use the [←] and [→] keys to move to the
position of the error and press the DEL key. Each press of
DEL will delete one command ( one step ).
Example: To correct an input of 369   2 to 369  2 :-
[3] [6] [9] [] [] [2]
[←][←][DEL]
If a character has been omitted from a formula, use the
" ← " and " → " key to move to the position where the
character should have been input, and press [SHIFT]
followed by [INS] key. Each press of [SHIFT] [INS] will
create a space for input of one command.
Example: To correct an input of 2.36
2[•]36[x 2 ]
[←][←][←][←][←]
can be used in
[SHIFT][INS]
[sin]
When [SHIFT] [INS] are pressed, the space that is opened
is displayed as " ". The function or value assigned to the
next key you press will be inserted in the
the insertion mode, move the cursors, or press [SHIFT]
[INS] , or press [=].
–2 10 Even after the [=] key has been pressed to calculate a
> |x|, or |x| ≥ 10
result, it is possible to use this procedure for correction.
–9 > |x|, or |x| ≥ 10 10
Press the [←] key to move the cursor to the place where
the correction is to be made.
– 5 –
Arithmetic Operations & Parenthesis Calculations
• Arithmetic operations are performed by pressing the
keys in the same order as noted in the formula.
• For negative values, press [(-)] before entering the value
• For mixed basic arithmetic operations, multiplication and
division are given priority over addition and subtraction
• Assuming that display mode Norm is selected.
Example
23 + 4.5 –53 =–25.5
56(–12)(–2.5)=268.8
12369753274103=
12
6.90368061310
75
(4.510 )(–2.3
–79 –3
10 ) = –1.03510
2
(2+3)10 =500
2 , x –1 , x!,
5
(110 )7=
14285.71429
y x
, √
5
b (110 )714285=
/
c
0.7142857
please note that internal calculation is calculated
in 12 digits for a mantissa and the result is
displayed and rounded off to 10 digits.
3 + 5  6 = 33
3 √, log,
7  8  4  5 = 36
x –1 –1 –1
, sin, cos, tan, sin , cos , tan , sinh, cosh, tanh,
1  2  3  4  5  6
–1 –1
, tanh , Int, Frac, Abs, (–), (following in
= 6.6
100  (23)  4 = 80
2  3  ( 4  5 ) = 29
( 7  2 )  ( 8  5 ) = 65
x ln√120
10  { 2  7  ( 3  6 )}
= –55
– 6 –

Percentage Calculations

Percentage cannot be executed in Base-N mode or CMPLX
mode.
Example
Percentage
26% of $15.00
Premium
15% increase from
$36.20
Discount
4% discount from
$47.50
Ratio
75 is what % of 250?
5  7 = Rate of change
3 5 ÷7 141 is an increase of
]7[=] E
42857.14286
what % from 120?
D
Rate of change
240 is a decrease of
]7[]42857[=] 3 E 5 ÷7 –4 28 5 7
0.14285714
what % from 300?
D

Specifying the Format of Calculation Results

You can change the precision of calculation results by
specifying the number of decimal places or the number of
significant digits. You can also shift the decimal place of a
displayed value three places to the left or right for
one-touch conversions of metric weights and measures.
Upon power up reset, the display format is defaulted at
99 . "Norm1". Each time you can press [MODE] to enter the
menu and select the desired format in the sub-menu
"FIX/SCI/NORM". When you choose "Norm", you can
further select between "Norm 1" or "Norm 2" in the
following window.
N o rm 1 ~ 2?
Key in either 1 or 2 to specify "Norm 1" or "Norm 2"
respectively.
Norm 1 :- all values less than 10
automatically expressed as exponents.
Norm 2 :- all values less than 10
automatically expressed as exponents.
– 7 –
Ma ERROR Note: You cannot specify the display format (Fix, Sci) while
Stk ERROR the calculator is in Base-N mode.
Syn ERROR
Specifying the Number of Decimal Places
The calculator always performs calculations using a
10-digit mantissa and 2-digit exponent, and results are
stored in memory as a 12-digit mantissa and 2-digit
exponent no matter how many decimal places you
specify. Intermediate results and final results are then
automatically rounded off to the number of decimal
places you have specified.
–1 key) require
It should be noted that displayed results are rounded
to the specified number of decimal places, but stored
results are normally not rounded.
To specify the number of decimal places ( FIX ), select [FIX]
in the sub-menu "FIX/SCI/NORM" and then you are asked
to enter a value indicating the number of places (0~9) as
below.
F i x 0 ~ 9 ?
At this time, you should be able to see "FIX" on the display.
The number of decimal places specified will remain in
effect until Norm1 or Norm2 is specified as described
above or significant digits are specified by selecting "SCI"
in the sub-menu "FIX/SCI/NORM".
1 2 2 _
0 .
Example Operation
D
1006 = 16.66666666 100 [] 6 [=]
1 2 2
specify 4 decimal places [Mode][Mode][Mode][=][4]
0 .
cancel specification [Mode][Mode][Mode]
D
[→][→][=][1]
1 2 3 _
200714 = 400 200[]7 [] 14[=]
0 .
rounded to 3 decimal [Mode][Mode][Mode][=][3]
D
places
200 [] 7[ =]
c o s 6 0
The intermediate result is
0 .
automatically rounded
D
to the specified three
c o s 6 0
decimal places.
0 .
D
s i n 6 0
0 .
D
– 8 – – 12 –
Example Operation
The stored 10-digit []
result (28.571421857) is
used when you continue
the calculation by simply
pressing [] or any other
arithmetic function key.
14 [=]
(The final result is
automatically rounded to
3 6 9 x x 2 _
the specified three
0 .
decimal places.)
D
Cancel specification by [Mode][Mode][Mode]
3 6 9 x 2
specifying Norm 1 again. [→][→][=][1]
0 .
D
Rounding the Intermediate Result
As the number of decimal places is specified, the
intermediate result will be automatically rounded to the
specified decimal places.
intermediate result is not rounded. In order to match the
displayed value and the stored value, [SHIFT] [RND] can
be input.
2 2
to sin 2.36 :-
2 . 3 6 _
2 You can compare the final result obtained in the previous
0 .
example with the final result of the following example.
D
2 . 3 6
2
0 .
Example Operation
D
200714 = 400 200[]7 [] 14[=]
. 3 6 2 rounded to 3 decimal [Mode][Mode][Mode][=][3]
0 .
places
D
200[]7 [=]
s i n . 3 6 2 The intermediate result is
0 .
automatically rounded
D
to the specified three
decimal places.
round the stored [SHIFT] [RND]
. To exit from intermediate result to
the specified three
decimal places
[]
14 [=]
Cancel specification by [Mode][Mode][Mode]
specifying Norm1 again. [→][→][=][1]
– 9 – – 13 –
Specifying the Number of Significant Digits
This specification is used to automatically round
intermediate results and final results to the number of
digits you have specified.
As with the number of decimal places, displayed results
are rounded to the specified number of digits, but stored
results are normally not rounded.
Display
To specify the number of significant digits (Sci.), select
Operation (Lower)
[SCI] in the sub-menu "FIX/SCI/NORM" and then you are
23 [] 4.5 [] 53 [=] –25.5
asked to enter a value indicating the number of significant
56[][(–)]12[][(–)]2.5[=] 268.8
digits (0~9) as below.
12369[] 7532 []
S c i 0 ~ 9 ?
12
74103[=] 6.903680613
4.5[EXP]75 [] [(–)]2.3
–03
[EXP] [(–)]79 [=] –1.035
Note : "0" indicating 10 significant digits.
[( ] 2 [] 3[ )][] 1
Meanwhile, the "SCI" indicator will appear on the display.
[EXP]2 [=] 500.
1[EXP]5 [] 7 [=]
14285.71429 Example Operation
1[EXP]5[]7 []
1006 = 16.66666666 100[]6 [=]
14285 [=] 0.71428571
specify 5 significant [Mode][Mode][Mode][→]
digits [=][5]
Cancel specification by [Mode][Mode][Mode]
specifying Norm 1 again. [→][→][=][1]
3 [] 5 [] 6 [=] 33.
7 [] 8 [] 4 [] 5 [=] 36.
Shifting the Decimal Place
1 [] 2 [] 3 [] 4 []
You can use the key [ENG] to shift the decimal point of
5 [] 6 [=] 6.6
the displayed value three places to the left or right. Each
100 [][( ] 2 [] 3[ )]
3-place shift to the left is the same as dividing the value
[] 4 [=] 80.
by 1000, and each shift to the right is the same as
2 [] 3 [] [(] 4 [] 5 [=] 29.
multiplying by 1000. This means that this function is
Closed parentheses
useful when converting metric weights and measures to
occurring immediately
other metric units.
before operation of the
[=] key may be omitted.
Example Operation
[( ] 7 [] 2 [ )][( ] 8 [] 5 [=] 65.
A multiplication sign [] 123m456 = 56088m 123[]456 [=]
= 56.088km [ENG]
occurring immediately
before an open parantheses 78g0.96 = 74.88g 78[]0.96 [=]
= 0.07488kg [SHIFT] [ENG]
can be omitted.
10 [][( ] 2 [] 7 [( ] 3 [] –55.
6 [=]

Memory

This calculator contains 9 standard memories. There are
two basic types of memories, i.e., "variable" memories,
which are accessed by using the [STO] and [RCL] keys in
– 10 – – 14 –
combination with the alphabets A, B, C, D, E, F, M, X and Y.
The "independent" memories, which are accessed by
using the [M+] , [Shift] [M–] and [RCL] and [M] keys. The
variable memory and independent memory utilize the
Display
same memory area.
Operation (Lower)
Contents of both the variable and independent memories
are protected even when the power is turned OFF.
15 []26 [SHIFT] [%] 3.9
Variable memories
Up to 9 values can be retained in memory at the same
36.2[]15 [SHIFT] [%] [] 41.63
time, and can be recalled when desired.
Example: Input 123 into memory "A" :-
47.5[]4 [SHIFT] [%] [] 45.6 [AC] [1] [2] [3]
75[]250 [SHIFT] [%] 30.
[STO] [A]
141[]120 [SHIFT] [%] 17.5
[AC]
240[]300 [SHIFT] [%] –20.
[RCL] [A]
When formulas are input, the result of the formula's
calculation is retained in memory.
Example: Input the result of 123456 into memory "B" :-
[AC] [1] [2] [3] [] [4] [5] [6]
[STO] [B]
[AC]
[RCL] [B]
–2 9
or greater than 10 are
If a variable expression is entered, the expression is first
–9 or greater than 10 9 are
calculated according to the values stored in the variable
memories used in the expression. The result is then stored
in the variable memory specified for the result.
– 11 – – 15 –
Example: Input the results of AB into memory "C" :-
[AC] [ALPHA] [A] [] [ALPHA] [B] A X B _
[STO] [C] C =
_
[AC]
[RCL] [C] C =
Syn ERROR is generated when an attempt is made to
input a substitution formula (such as C = AB) or
multistatements (such as AB : CD), and the existing
memory contents are retained.
When input is made in a format such as "A=log 2", where
the variable is equal to the formula, the results of the
calculation are input into the specified memory.
Example: Executing "A=log2" :-
A = l o g 2 _
[AC] [ALPHA] [A] [ALPHA] [=]
[log] [2]
[=] A = l o g 2
0.301029995.
[AC] _
Display
(Lower)
16.66666667
[RCL] [A] A =
16.6667
0.301029995.
16.66666667
Deleting memories
400.
To delete all contents of variable memories, press [Shift]
400.000
followed by [Mcl] [=].
28.571
Independent Memory
Addition and subtraction (to and from sum) results can be
stored directly in memory. Results can also be totalized in
memory, making it easy to calculate sums. The icon "M"
will be lighted as long as M is not empty.
Example: Input 123 to independent memory.
– 16 –
1 2 3 _
[AC] [1] [2] [3]
Display
(Lower)
Ans 
[M+] 1 2 3
(upper display)
Recall memory data
[AC] _
400.000
[RCL] [M] M =
Add 25, subtract 12
1 2
25 [M+] 12 [SHIFT] [M–]
400.
Recall memory data
_
[AC]
[RCL] [M] M =
However, the stored
To clear memory contents, press [0] [STO] [M].
Addition/subtraction to or from sum in memory cannot
be carried out with [M+], [Shift] [M–] keys in SD mode
and LR mode.
Difference between [STO][M] and [M+], [Shift][M–] :-
Display
Both [STO] [M] and [M+], [Shift] [M–] can be used to
(Lower)
input results into memory, however when the [STO] [M]
400. operation is used, previous memory contents are cleared.
400.000
When either [M+] or [Shift] [M–] is used, value is added or
subtracted to or from present sum in memory.
28.571
Example: Input 456 into memory "M" using [STO] [M]
procedure. Memory already contains value of 123.
M =
[AC] [1] [2] [3] [STO] [M]
28.571
[AC] [4] [5] [6] [STO] [M] M =
Ans 
[AC] _
(upper display)
399.994
399.994 [RCL] [M] M =
– 17 –
Example: Input 456 into memory "M" using M+. Memory
already contains value of 123.
M =
[AC] [1] [2] [3] [STO] [M]
4 5 6
[AC] [4] [5] [6] [M+]
_
[AC]
[RCL] [M] M =
Special Functions
Answer Function
This unit has an answer function that stores the result of
Display
the most recent calculation. Once a numeric value or
(Lower)
numeric expression is entered and [=] is pressed, the
16.66666667 result is stored by this function.
01
1.6667
To recall the stored value, press the [Ans] key. When [Ans]
is pressed, "Ans" will appear on the display, and the value
16.66666667
can be used in subsequent calculations.
Example: 123456 = 579
789579 = 210
[AC][1][2][3][][4][5][6][=] 1 2 3 + 4 5 6
7 8 9 – A n s _
[7][8][9][][Ans]
[=] 7 8 9 – A n s
Display
(Lower)
56088.
Numeric values with 12 digits for a mantissa and 2 digits
03
56.088
for an exponent can be stored in the "Ans" memory. The
74.88
"Ans" memory is not erased even if the power of the unit
03
0.07488
is turned OFF. Each time [=] , [Shift] [%] , [M+] , [Shift] [M–] ,
and [STO]  ( = A ~ F, M, X, Y ) is pressed, the value in the
Ans memory is replaced with the new value produced by
the calculation execution. When execution of a
calculation results in an error, however, the "Ans" memory
retains its current value.
– 18 –
Note:- Contents of "Ans" memory are not altered when
RCL  ( = A~F, M, X, Y) is used to recall contents of
variable memory. Also, contents of "Ans" memory are not
altered when variables are input when the variable input
prompt is displayed.
Omitting the multiplication sign ()
When inputting a formula as it is written, from left to right,
it is possible to omit the multiplication sign () in the
following cases :-
• Before the following functions :-
sin, cos, tan, sin –1 , cos –1 , tan –1 , sinh, cosh, tanh, sinh
1 2 3 _ cosh –1 , tanh –1 , log, ln, 10 x , e x , √, 3 √, Pol(x,y), Rec(r, )
0.
example: 2sin30, 10log1.2, 2√3, 2Pol(5, 12), etc.
D
A = • Before fixed numbers, variales and memories :-
123.
example: 2π, 2AB, 3Ans, etc.
D
_
• Before parentheses :-
0.
example: 3(56), (A1)(B1), etc.
D
A =
Continuous Calculation Function
123.
Even if calculations are concluded with the [=] key, the
D
result obtained can be used for further calculations. In
this case, calculations are performed with 10 digits for the
mantissa which is displayed.
Example: To calculate 3.14 continuing after 34=12
[AC] [3] [] [4] [=] 3 x 4
1 2 3 X 4 5 6
0.
D
(continuing) [] [3] [•] [1] [4] A n s ÷3 . 1 4 _
B =
56088.
D
A n s ÷3 . 1 4
[=]
3.821656051
_
0.
D
B = Example: To calculate 133 =
56088.
1 ÷3 x 3
[AC] [1] [] [3] [] [3] [=]
D
1 ÷3
[1] [] [3] [=]
0.333333333
A n s x 3
(continuing) [] [3] [=]
– 19 –
2
This function can be used with Type A functions ( x , x
y, x
x!), , , x √ and º' ".
0.
Example: Squaring the result of 786=13
D
[AC] [7] [8] [] [6] [=] 7 8 ÷6
13.
6898824. D
D
(continuing) [x 2 ] A n s 2 _
13.
0. D
D
[=] A n s 2
169.
6898824. D
D
Replay Function
This function stores formulas that have been executed.
After execution is complete, pressing either the [←] or [→
] key will display the formula executed.
Pressing [→] will display the formula from the beginning,
with the cursor located under the first character.
Pressing [←] will display the formula from the end, with
the cursor located at the space following the last
character. After this, using the [→] and [←] to move the
cursor, the formula can be checked and numeric values or
commands can be changed for subsequent execution.
0.
Example:
D
1 2 3 x 4 5 6
[AC] [1] [2] [3] [] [4] [5] [6] [=]
56088.
D
D
[→] 1 2 3 x 4 5 6
56088.
0. D
D
[=] 1 2 3 x 4 5 6
56088.
D
D
1 2 3 x 4 5 6 _
[←]
56088.
D
Example:
4.123.586.4 = 21.496
4.123.587.1 = 7.6496
[AC] [4] [•] [1] [2] [] 4 . 1 2 x 3 . 5 8 + 6 .
21.1496
[3] [•] [5] [8] [] [6] [•] [4] [=]
D
1 2 x 3 . 5 8 + 6 . 4 _
[←]
21.1496
D
– 20 –
4 . 1 2 x 3 . 5 8 + 6 .
[←] [←] [←] [←]
0. 21.1496
D D
1 2 x 3 . 5 8 – 7 . 1 _
[] [7] [•] [1]
123. 21.1496
D D
[=] 4 . 1 2 x 3 . 5 8 – 7 .
0. 7.6496
D D
The replay function is not cleared even when [AC] is
123.
pressed or when power is turned OFF, so contents can be
D
recalled even after [AC] is pressed.
12.
Replay function is cleared when mode or operation is
D
switched.
0.
D
Error Position Display Function
When an ERROR message appears during operation
136.
execution, the error can be cleared by pressing the [AC]
D
key, and the values or formula can be re-entered from the
beginning. However, by pressing the [←] or [→] key, the
ERROR message is cancelled and the cursor moves to the
point where the error was generated.
Example: 1402.3 is input by mistake
[AC] [1] [4] [] [0] [] M a E R R O R
[2] [.] [3] [=]
[←] (or [→] ) 1 4 ÷0 x 2 . 3
0.
D
1 4 ÷1 0 x 2 . 3
Correct the input by pressing
0.
[←] [SHIFT] [INS] [1]
D
123.
[=] 1 4 ÷1 0 x 2 . 3
D
3.22
D
456.
Multistatement Function
D
• The multistatement function (using colons to separate
formulas or statements) available in program
0.
calculations can also be used for manual calculations.
D
• The multistatement function allows formulas to be
separated by colons ( [SHIFT] [:] ) to make consecutive,
456.
multiple statement calculations possible.
D
• When [=] is pressed to execute a formula input using the
– 21 –
multistatement format, the formula is executed in order
from the beginning.
• Inputting " " ( [SHIFT] [ ] ) in place of the colon will
123.
display the calculation result up to that point during
D
execution.
Example:
456.
6.9123 = 848.7
D
1233.2 = 38.4375
[AC]123 [STO] [A] 6.9 [] 6 . 9 x A
0.
848.7
[ALPHA] [A] [SHIFT] [ ]
D
PAUSE
[ALPHA] [A] [] 3.2 [=]
579.
"Disp" appears on the display when "
" is used.
D
[=] A ÷3 . 2
38.4375
• Even if " " is not input at the end of a formula, the final
result will be displayed.
• Consecutive calculations containing multistatements
cannot be performed.
123  456 : 5
∑ invalid
• Calculations can be performed while an intermediate
result is displayed during execution interrupted by "
Example: 56 78
5 x 6 7 x 8 _
[AC] [5] [] [6] [SHIFT] [ ]
0.
[7] [] [8]
D
[=] 5 x 6
30.
579. PAUSE D
D
s i n A n s _
[sin] [Ans]
30.
579. PAUSE D
D s i n A n s _
[=]
0.5
210. PAUSE D
D
When interrupt operation is completed, press [=] once
again to execute.
[=] 7 x 8
56.
D

Scientific Function

Trigonometric functions and inverse trigonometric
functions
• Be sure to set the unit of angular measurement before
performing trigonometric function and inverse
– 22 –
trigonometric function calculations.
• The unit of angular measurement (degrees, radians,
grads) is selected in sub-menu.
• Once a unit of angular measurement is set, it remains in
effect until a new unit is set. Settings are not cleared
when power is switched OFF.
• This operation is invalid in the "BASE-N" mode. When in
the "BASE-N" mode, go back to COMP mode by selecting
"COMP" in the main menu.
Display
Example Operation (Lower)
sin 63 º 52'41"
[MODE][MODE][=]
–1 , ("DEG" selected)
[sin] 63 [ º ' "] 52 [ º ' "]
= 0.897859012
41 [ º ' "][=]
0.897859012
cos (π/3 rad) = 0.5 [MODE][MODE][→][=]
("RAD")
[cos][(] [SHIFT][π][]3
[)] [=]
tan (–35 grad) [MODE][MODE][→][→][=]
= –0.612800788
("GRA" selected)
[tan] [(–)] 35 [=] –0.612800788
2sin45 º cos65 º [MODE][MODE][=]
("DEG")
= 0.597672477 2[sin] 45 [cos] 65 [=] 0.597672477
sin –1 0.5 = 30 [SHIFT][sin –1 ] 0.5 [=]
–1
cos (√2/2) [MODE][MODE][→][=]
("RAD")
= 0.785398163 rad [SHIFT][cos –1 ][(][√]2 []2
= π/4 rad [)][=] 0.785398163
[][SHIFT][π][=] 0.249999999
tan –1 0.741 [MODE][MODE][=]
("DEG")
12. = 36.53844577 º –1
[SHIFT][tan ]0.741[=] 36.53844577
D = 36 º 32' 18.4" ← 36 º 32 º 18.4
[SHIFT] [ º' "]
If the total number of digits for degrees/minutes/seconds exceed
12.
11 digits, the higher order values are given display priority, and
D
any lower-order values are not displayed. However, the entire
value is stored within the unit as a decimal value.
2.5(sin –1 0.8cos –1 0.9) 2.5[] [(] [SHIFT] [sin –1 ]0.8
D
= 68 º 13'13.53" [] [SHIFT] [cos –1 ] 0.9 [)]
← 68 º 13 º 13.53
[=] [SHIFT] [ º' "]

Logarithmic and Exponential Functions

1.
The following operation is invalid in the BASE-N mode.
D
When in the BASE-N mode, carry out calculation after
selecting "COMP" mode in main menu.
D
1.
D
– 23 –
–1
,
".
0.5
30.