Ativa AT-30i Manuale d'uso
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Stampa la paginaBefore 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 scroll through sub-menus. Then
select the appropriate mode by keying in the number.
Press [MODE] once to read the first page of the main
menu.
AT-30i
COMP SD REG
1
Press [MODE] again.
Deg Rad Gra
1
Press [MODE] further.
Fix Sci Norm
2-lines display
1
Scientific Calculator
Press "MODE" once more to leave the menu.
_
Calculation Modes
"COMP" mode : - general calculations, including function
with advance
calculations can be executed.
statistical functions
"SD" mode:- standard deviation calculation can be
executed. "SD" symbol appears in display.
"REG" mode:- regression calculations can be performed.
"REG" symbol appears in display.
Angular Measurement Modes
"DEG" mode:- specify measurement in "degrees". "D"
symbol appears in display window.
"RAD" mode:- specify measurement in "radians". "R"
symbol appears in display window.
"GRA" mode:- specify measurement in "grads". "G"
symbol appears in display window.
Display Modes
"FIX" mode:- specify number of decimal places. "Fix"
symbol appears in display window.
"SCI" mode:- specify number of significant digits. "Sci"
symbol appears in display window.
Please read before using.
Safety Precautions
"NORM" mode:- cancels "Fix" and "Sci" specifications.
Be sure to read the following safety precautions before
using this calculator. Keep this manual handy for later
Note:-
reference.
• Mode indicators appear in the lower part of the display.
• The "COMP", "SD", and "REG" modes can be used in
Batteries
combination with the angle unit modes.
• After removing the batteries from the calculator, put
• Be sure to check the current calculation mode (COMP, SD,
them in a safe place where there is no danger of them
REG) and angle unit mode (DEG, RAD, GRA) before
getting into the hands of small children and accidently
beginning a calculation.
swallowed.
• Keep batteries out of the reach of children. If accidentally
Calculation Priority Sequence
swallowed, consult with a physician immediately.
Calculations are performed in the following order of
• Never charge batteries, try to take batteries apart, or
precedence:-
allow batteries to become shorted. Never expose
1. Coordinate transformation: Pol(x, y),Rec(r, )
batteries to direct heat or dispose of them by
2. Type A functions :-
incineration.
These functions are those in which the value is entered
• Misuse of batteries can cause them to leak acid that can
and than the function key is pressed, such as x
º '''.
cause damage to nearby items and creates the
possibility of fire and personal injury.
3. Powers and roots, x
• Always make sure that a battery's positive (+) and
4. Fractions, a
negative (–) sides are facing correctly when you load it
5. Abbreviated multiplication format in front of π, memory
into the calculator.
name or variable name, such as 2π, 5A, πA, etc.
• Remove the batteries if you do not plan to use the
6. Type B functions :-
calculator for a long time.
These functions are those in which the function key is
• Use only the type of batteries specified for this calculator
pressed and then the value is entered such as √,
x
x
in this manual.
ln, e
, 10
, sin, cos, tan, sin
–1
• Do not mix old and new batteries. Do not mix alkaline,
sinh
, cosh
standard (carbon-zinc), or rechargeable (nickle cadmium)
7. Abbreviated multiplication format in front of Type B
batteries.
functions, such as, 2√3, A log2, etc.
• Battery Contains Mercury. Do Not Put in Trash. Recycle or
8. Permutation, combination, nPr, nCr
Manage as Hazardous Waste.
9. ,
10. ,
Disposing of the Calculator
• Never dispose of the calculator by burning it. Doing so
• When functions with the same priority are used in series,
can cause certain components to suddenly burst,
execution is performed from right to left for :- e
x
creating the danger of fire and personal injury.
➞ e
{ln(√120)}. Otherwise, execution is from left to right.
• The displays and illustrations (such as key markings)
• Operations enclosed in parentheses are performed first.
shown in this Owner's Manual are for illustrative
purposes only, and may differ somewhat from the actual
Stacks
items they represent.
This calculator uses memory areas, called "stacks", to
• The contents of this manual are subject to change
temporarily store values (numeric stack) and commands
without notice.
(command stack) according to their precedence during
calculations. The numeric stack has 10 levels and the
command stack has 24 levels. A stack error (stk ERROR)
occurs whenever you try to perform a calculation that is
so complex that the capacity of a stack is exceeded.
– 1 –
Handling Precautions
Error Loacator
• Be sure to press the "ON/AC" key before using the
Pressing [3] or [4] after an error occurs display the
calculator for the first time.
calculation with the cursor positioned at the location
• Even if the calculator is operating normally, replace the
where the error occured.
battery at least once every three years. Dead battery can
leak, causing damage to and malfunction of the
Overflow and Errors
calculator. Never leave the dead battery in the calculator.
The calculator is locked up while an error message is on
• The battery that comes with this unit discharges slightly
the display. Press [ON/AC] to clear the error, or press [3]
during shipment and storage. Because ofthis, it may
or [4] to display the calculation and correct the problem.
require replacement sooner than the normal expected
battery life.
"Ma ERROR" caused by:-
• Low battery power can cause memory contents to
• Calculation result is outside the allowable calculation
become corrupted or lost completely. Always keep
range.
written records of all important data.
• Attempt to perform a function calculation using a value
• Avoid use and storage in areas subjected to temperature
that exceeds the allowable input range.
extremes. Very low temperatures can cause slow display
• Attempt to perform an illegal operation (division by zero,
response,total failure of the display, and shortening of
etc.).
battery life.Also avoid leaving the calculator in direct
Action
sunlight, neara window, near a heater or anywhere else it
• Check your input values and make sure they are all
might become exposed to very high temperatures. Heat
within the allowable ranges. Pay special attention to
can cause discoloration or deformation of the
values in any memory areas you are using.
calculator's case, anddamage to internal circuitry.
• Avoid use and storage in areas subjected to large
"Stk ERROR" caused by:-
amounts of humidity and dust. Take care never to leave
• Capacity of the numeric stack or operator stack is
the calculator where it might besplashed by water or
exceeded.
exposed to large amounts of humidity or dust. Such
Action
elements can damage internal circuitry.
• Simplify the calculation. The numeric stack has 10 levels
• Never drop the calculator or otherwise subject it to
and the operator stack has 24 levels.
strong impact.
• Divide your calculation into two or more separate parts.
• Never twist or bend the calculator. Avoid carrying the
calculator in the pocket of your trousers or other
"Syn ERROR" caused by:-
tight-fitting clothing where it might be subjected to
• Attempt to perform an illegal mathematical operation.
twisting or bending.
Action
• Never try to take the calculator apart.
• Press to display the calculation with the cursor located at
• Never press the keys of the calculator with a ball-point
the location of the error. Make necessary corrections.
pen or other pointed object.
• Use a soft, dry cloth to clean the exterior of the unit. If the
Number of Input/output Digits and Calculation Digits
calculator becomes very dirty, wipe it off with acloth
The memory area used for calculation input can hold 79
moistened in a weak solution of water and a mildneutral
"steps". One function comprises one step. Each press of
household detergent. Wring out all excess moisture
numeric or , , and keys comprise one step.
before wiping the calculator. Never use thinner, benzine
Though such operations as [SHIFT] [x!] (x
or other volatile agents to clean the calculator. Doing so
two key operations, they actually comprise only one
can remove printed markings and damage the case.
function, and, therefore, only one step. These steps can be
confirmed using the cursor. With each press of the [3] or
[4] key, the cursor is moved one step.
– 2 –
Two-lines Display
Whenever you input the 73rd step of any calculation, the
cursor changes from "_" to "■" to let you know memory is
running low. If you still need to input more, you should
divide you calculation into two or more parts.
When numeric values or calculation commands are input,
S A
D R G
hyp M STO RCL SD REG
Fix Sci
they appear on the display from the left. Calculation
You can simultaneously check the calculation formula and
results, however, are displayed from the right.
its answer. The first line displays the calculation formula.
The allowable input/output range (number of digits) of
The second line displays the answer.
this unit is 10 digits for a mantissa and 2 digits for the
exponent. Calculations, however, are performed internally
Keys Layout
with a range of 12 digits for a mantissa and 2 digits for an
exponent.
Example: 3 10
÷
3[EXP]5[
]7[=]
SHIFT
REPLAY
OFF
ALPHA
MODE
÷
3[EXP]5[
]7[]42857[=]
x
nPr
Rec(
x
!
x
x
–1
3
3
x
y
nCr
Pol(
Corrections
x
e
x
d /c
To make corrections in a formula that is being input, use
10
x
2
the [3] and [4] keys to move to the position of the error
ENG
a
b
/c
log
ln
and press the correct keys.
A
B
C
D
E
F
sin
–1
cos
–1
tan
–1
,,,
Example: To change an input of 122 to 123 :-
(–)
hyp
cos
sin
tan
º
[1] [2] [2]
;
r
X
Y
M–
M
,
(
)
STO
RCL
M+
[3]
DT
CL
A
B
C
Mcl
Scl
INS
7
8
9
DEL
ON/AC
[3]
y
y
y
n
n
–1
÷
4
5
6
Example: To change an input of cos60 to sin60 :-
[cos] [6] [0]
x
x
x
x
y
n
n
–1
+
1
2
3
–
[3] [3] [3]
%
Rnd
Ran#
DRG
π
=
0
•
EXP
Ans
[sin]
– 3 –
If after making corrections, input of the formula is
complete, the answer can be obtained by pressing [ = ]. If,
All manuals and user guides at all-guides.com
however, more is to be added to the formula, advance the
cursor using the [4] key to the end of the formula for
input.
If an unnecessary character has been included in a
formula, use the [3] and [4] 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 :-
2
3
369[][]2
[3][3][DEL]
2
3
If a character has been omitted from a formula, use the
2
3
[3] and [4] 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.
0.
Example: To correct an input of 2.36
2[•]36[x
2
]
[3][3][3][3][3]
[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 [=].
Even after the [=] key has been pressed to calculate a
result, it is possible to use this procedure for correction.
Press the [3] key to move the cursor to the place where
the correction is to be made.
– 4 –
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 1" is selected.
Example
Operation
23 + 4.5 –53 =–25.5
23 [] 4.5 [] 53 [=]
56(–12)(–2.5)=268.8
56[][(–)]12[][(–)]2.5[=]
12369753274103=
12369[] 7532 []
12
6.90368061310
74103[=]
(4.510
75
)(–2.3
4.5[EXP]75 [] [(–)]2.3
–79
–3
10
) = –1.03510
[EXP] [(–)]79 [=]
2
–1
, x
, x!,
2
(2+3)10
=500
[( ] 2 [] 3[ )][]
x
2
10[
y
x
,
√
5
(110
)7=
1[EXP]5 [] 7 [=]
b
/
c
14285.71429
5
(110
)714285=
1[EXP]5[]7 []
0.7142857
14285 [=]
please note that internal calculation is calculated
in 12 digits for a mantissa and the result is
3
√, log,
displayed and rounded off to 10 digits.
–1
–1
–1
, cos
, tan
, sinh, cosh, tanh,
3 + 5 6 = 33
3 [] 5 [] 6 [=]
–1
–1
, tanh
, (–).
7 8 4 5 = 36
7 [] 8 [] 4 [] 5 [=]
1 2 3 4 5 6
1 [] 2 [] 3 [] 4 []
= 6.6
5 [] 6 [=]
100 (23) 4 = 80
100 [][( ] 2 [] 3[ )]
[] 4 [=]
2 3 ( 4 5 ) = 29
2 [] 3 [] [(] 4 [] 5 [=]
Closed parentheses
occurring immediately
x
ln√120
before operation of the
[=] key may be omitted.
( 7 2 ) ( 8 5 ) = 65
[( ] 7 [] 2 [ )][( ] 8 [] 5 [=]
A multiplication sign []
occurring immediately
before an open parantheses
can be omitted.
10 { 2 7 ( 3 6 )}
10 [][( ] 2 [] 7 [( ] 3 []
= –55
6 [=]
– 5 –
Percentage Calculations
Use the "COMP" mode for percentage calculations.
Example
Operation
Percentage
26% of $15.00
15 []26 [SHIFT] [%]
Ratio
75 is what % of 250?
75[]250 [SHIFT] [%]
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
"Norm1". Each time when you press "[MODE] [MODE]
[MODE] [3]" you can choose either "Norm 1" or "Norm 2"
by keying in [1] or [2] respectively.
Norm 1 :- all values less than 10
automatically expressed as exponents.
Norm 2 :- all values less than 10
automatically expressed as exponents.
Note: You cannot specify the display format (Fix, Sci) while
the calculator is in Base-N mode.
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.
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 ), press
–1
key) require
"[MODE] [MODE] [MODE] [1]" and then a value
indicating the number of decimal places (0~9).
Fix 0~9?
At this time, you should be able to see "Fix" on the display.
The number of decimal places specified will remain in
– 6 –
effect until "Norm" (to select "Norm" press "[MODE]
[MODE] [MODE] [3]") is specified or significant digits are
specified using "[MODE] [MODE] [MODE] [2]".
[ON/AC] [MODE]
[MODE]
[MODE]
[1]
5
7 =
[4] (to specify 4 decimal places)
3
E
5÷7
42857.14286
D
Reset to "Norm"
3
5÷7–42857
E
0.1428571
[ON/AC] [MODE]
D
[MODE]
[MODE]
122_
0.
D
[3]
122
0.
[1]
D
123_
0.
Example
Operation
D
1006 = 16.66666666
100 [] 6 [=]
specify 4 decimal places
[MODE][MODE][MODE][1][4]
cos 60
cancel specification
[MODE][MODE][MODE]
0.
[3] [1]
D
200714 = 400
200[]7 [] 14[=]
cos 60
rounded to 3 decimal
[MODE][MODE][MODE][1][3]
0.
places
D
200 [] 7[ =]
sin 60
The intermediate result is
0.
automatically rounded
D
to the specified three
decimal places.
– 7 –
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
the specified three
369xx2_
decimal places.)
0.
Cancel specification by
[MODE][MODE][MODE][3][1]
D
specifying "Norm" again.
369x2
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.
However, the stored
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
:-
You can compare the final result obtained in the previous
2.36
2
_
0.
example with the final result of the following example.
D
2.36
2
Example
Operation
0.
200714 = 400
200[]7 [] 14[=]
D
rounded to 3 decimal
[MODE][MODE][MODE][1][3]
2
.36
places
0.
200[]7 [=]
D
The intermediate result is
sin
.36
2
automatically rounded
0.
D
to the specified three
decimal places.
round the stored
[SHIFT] [Rnd]
intermediate result to
. To exit from
the specified three
decimal places
[]
14 [=]
Cancel specification by
[MODE][MODE][MODE][3][1]
specifying "Norm" again.
– 8 –
– 12 –
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
(Lower)
To specify the number of significant digits (Sci.), select
[SCI] in the sub-menu "FIX/SCI/NORM" and then you are
–25.5
asked to enter a value indicating the number of significant
268.8
digits (0~9) as below.
12
6.903680613
Sci 0~9?
–03
–1.035
Note : "0" indicating 10 significant digits.
Meanwhile, the "Sci" indicator will appear on the display.
] [=]
500.
14285.71429
Example
Operation
1006 = 16.66666666
100[]6 [=]
0.7142857
specify 5 significant
[Mode][Mode][Mode][2][5]
digits
Cancel specification by
[Mode][Mode][Mode][3][1]
specifying "Norm" again.
33.
36.
Shifting the Decimal Place
You can use the key [ENG] to shift the decimal point of
6.6
the displayed value three places to the left or right. Each
3-place shift to the left is the same as dividing the value
80.
by 1000, and each shift to the right is the same as
29.
multiplying by 1000. This means that this function is
useful when converting metric weights and measures to
other metric units.
65.
Example
Operation
123m456 = 56088m
123[]456 [=]
= 56.088km
[ENG]
78g0.96 = 74.88g
78[]0.96 [=]
= 0.07488kg
[SHIFT] [ENG]
–55.
– 9 –
– 13 –
Memory
This calculator contains 9 standard memories. There are
two basic types of memories, i.e., "variable" memories,
Display
which are accessed by using the [STO] and [RCL] keys in
(Lower)
combination with the alphabets A, B, C, D, E, F, M, X and Y.
The "independent" memory, which is accessed by using
3.9
the [M+] , [Shift] [M–] and [RCL] and [M] keys. The
independent memory uses the same memory area as
30.
variable M.
Contents of both the variable and independent memories
are protected even when the power is turned OFF.
Variable memories
Up to 9 values can be retained in memory at the same
time, and can be recalled when desired.
Example: Input 123 into memory "A" :-
[ON/AC] 123
123 _
[STO] [A]
A=
–2
or greater than 10
9
are
–9
or greater than 10
9
are
[ON/AC]
_
[RCL] [A]
A=
When formulas are input, the result of the formula's
calculation is retained in memory.
Example: Input the result of 123456 into memory "B" :-
[ON/AC] 123 [] 456
123X456 _
[STO] [B]
B=
[ON/AC]
_
[RCL] [B]
B=
– 10 –
– 14 –
If a variable expression is entered, the expression is first
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.
COMP SD REG
Example: Input the results of AB into memory "C" :-
1
2
3
[ON/AC] [ALPHA] [A] []
AXB_
[ALPHA] [B]
Deg Rad Gra
1
2
3
[STO] [C]
C=
Fix Sci Norm
1
2
3
[ON/AC]
_
Fix 0~9?
[RCL] [C]
C=
_
0.0000
Deleting memories
D
Fix
To delete all contents of variable memories, press [Shift]
followed by [Mcl] [=].
COMP SD REG
1
2
3
Independent Memory
Addition and subtraction (to and from sum) results can be
stored directly in memory. Results can also be totalized in
Deg Rad Gra
1
2
3
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.
Fix Sci Norm
1
2
3
[ON/AC] [1] [2] [3]
123_
Norm 1~2?
[M+]
123
Recall memory data
Display
[ON/AC]
_
(Lower)
16.66666667
16.6667
[RCL] [M]
M=
Add 25, subtract 12
16.66666667
25 [M+] 12 [SHIFT] [M–]
400.
12
400.000
Recall memory data
[ON/AC]
28.571
_
[RCL] [M]
M=
– 11 –
– 15 –
To clear memory contents, press [0] [STO] [M].
Display
(Lower)
Addition/subtraction to or from sum in memory cannot
Ans
be carried out with [M+], [SHIFT] [M–] keys in "SD" mode
(upper display)
and "REG" mode.
Difference between [STO][M] and [M+], [SHIFT][M–] :-
Both [STO] [M] and [M+], [SHIFT] [M–] can be used to
input results into memory, however when the [STO] [M]
400.000
operation is used, previous memory contents are cleared.
When either [M+] or [SHIFT] [M–] is used, value is added
or subtracted to or from present sum in memory.
Example: Input 456 into memory "M" using [STO] [M]
400.
procedure. Memory already contains value of 123.
[ON/AC] [1] [2] [3] [STO] [M]
M=
123.
M
D
[ON/AC] [4] [5] [6] [STO] [M]
M=
456.
M
D
[ON/AC]
_
0.
M
D
[RCL] [M]
M=
456.
M
D
Example: Input 456 into memory "M" using M+. Memory
Display
already contains value of 123.
(Lower)
[ON/AC] [1] [2] [3] [STO] [M]
M=
400.
123.
M
400.000
D
[ON/AC] [4] [5] [6] [M+]
456
28.571
456.
M
D
[ON/AC]
_
0.
M
D
28.571
[RCL] [M]
M=
579.
M
D
Ans
(upper display)
399.994
399.994
– 16 –
Special Functions
Answer Function
This unit has an answer function that stores the result of
the most recent calculation. Once a numeric value or
numeric expression is entered and [=] is pressed, the
result is stored by this function.
To recall the stored value, press the [Ans] [=] key. When
[Ans] is pressed, "Ans" will appear on the display, and the
value can be used in subsequent calculations.
Example: 123456 = 579
789579 = 210
[ON/AC][1][2][3][][4][5][6][=]
123+456
579.
D
[7][8][9][][Ans]
789–Ans_
Display
579.
(Lower)
D
16.66666667
[=]
789–Ans
01
1.6667
210.
D
16.66666667
Numeric values with 12 digits for a mantissa and 2 digits
for an exponent can be stored in the "Ans" memory. The
"Ans" memory is not erased even if the power of the unit
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.
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
Display
altered when variables are input when the variable input
(Lower)
prompt is displayed.
56088.
03
56.088
Omitting the multiplication sign ()
74.88
When inputting a formula as it is written, from left to right,
03
0.07488
it is possible to omit the multiplication sign () in the
following cases :-
– 17 –
• Before the following functions :-
sin, cos, tan, sin
–1
, cos
–1
, tan
–1
, sinh, cosh, tanh, sinh
–1
cosh
–1
, tanh
–1
, log, ln, 10
x
, e
x
, √,
3
√, Pol(x,y), Rec(r, )
example: 2sin30, 10log1.2, 2√3, 2Pol(5, 12), etc.
• Before fixed numbers, variales and memories :-
example: 2π, 2AB, 3Ans, etc.
• Before parentheses :-
example: 3(56), (A1)(B1), etc.
Continuous Calculation Function
Even if calculations are concluded with the [=] key, the
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 34=12
0.
[ON/AC] [3] [] [4] [=]
3x4
D
12.
D
123.
(continuing) [] [3] [•] [1] [4]
Ans÷3.14_
D
12.
D
0.
[=]
Ans÷3.14
D
3.821656051
D
123.
D
Example: To calculate 133 =
[AC] [1] [] [3] [] [3] [=]
1÷3x3
1.
D
[1] [] [3] [=]
1÷3
0.333333333
D
0.
D
(continuing) [] [3] [=]
Ansx3
1.
D
56088.
D
0.
D
56088.
D
– 18 –
This function can be used with Type A functions ( x
2
, x
–1
y, x
x!), , , x
√ and º' ".
Example: Squaring the result of 786=13
[ON/AC] [7] [8] [] [6] [=]
78÷6
13.
D
0.
(continuing) [x
2
]
Ans
2
_
D
13.
D
6898824.
[=]
Ans
2
D
169.
D
0.
Replay Function
D
This function stores formulas that have been executed.
After execution is complete, pressing either the [3] or
6898824.
[4] key will display the formula executed.
D
Pressing [4] will display the formula from the beginning,
with the cursor located under the first character.
Pressing [3] will display the formula from the end, with
the cursor located at the space following the last
character. After this, using the [4] and [3] to move the
cursor, the formula can be checked and numeric values or
commands can be changed for subsequent execution.
Example:
[ON/AC] [1] [2] [3] []
123x456
56088.
[4] [5] [6] [=]
D
0.
[4]
123x456
D
56088.
D
123.
[=]
123x456
D
56088.
D
0.
[3]
123x456 _
D
56088.
D
123.
D
12.
D
0.
D
136.
D
– 19 –
,
,