Canon Canola MP131L User manual

Electronic Calculator
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Canon Canola MPI13IL Instructions English Edition

The Canola MP131L is aproduct of
Canon’s advanced micro-electronic tech-
nology and human engineering and is desig-
ned to give many years of reliable service. To
make sure you take full advantage of its
many special features, please read the
instructions and work through the exam-
ples given in this manual before use.
CONTENTS
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Before Starting Calculation
5SPECHICationS «,«:ws sews assis s@s 3
.Keys &Controls. .vv vvvwe amo nina 4
.Overflow Interlock Mechanism .... 7
.Printing Paper &Ink Ribbon ...... 8
.Key Operation wssassus spss sins 10
.Calculation Examples
.Addition &Subtraction .......... 11
Multiplication .: cs: swsswssws ens 13
DIVISION. s55 555 cms sm5 555 53 gms 14
Mixed Calculation .............. 15
Constant Calculation ............ 16
Involution &
Reciprocal Calculation ........... 17
Calculation Using Memory ........ 18
II. Applied Calculation ............. 20

I. BEFORE STARTING OPERATIONS
1. SPECIFICATIONS
Type:
Desk-top electronic calculator with print-
out system
Keyboard:
10-key system using magnet reed switch
Printing System:
Drum type line printer
Registers:
3calculating registers
1memory register
1printing register
Digit capacity
Numeral [Calcu-
to be lating
|Result
Calcu- |numer-| (max.)
lated al
Addition &
Subtraction 113 13
Multipli-
cation &13 13 13
Division
Printing digits:
numerals; 15 digits decimal point; 1digit
sign; 2digits
Printing speed:
2.7 lines per second (Entry is possible
during printing.)
Printing colors:
Positive numbers are printed in black, and
negative numbers are printed in red.
Printing paper:
Roll paper
width: approx. 57mm (2-1/4")
diameter of roll: less than 86mm (3-3/8")
Ink ribbon:
EP102 type
Decimal point system:
Decimal point can be preselected at 0, 1, 2,
3, 4, or 6digits.
Entries: multipliers &divisors; floating
others; fixed.
Results: fixed
Negative numbers:
True value with aminus sign printed in red
Results:
The results can be obtained up to the
preselected decimal digits with round-off
(5/4) or drop-off (3).
Types of calculation:
Addition,
division, chain calculation, constant calcu-
subtraction, multiplication
lation, sum and difference of products and
quotients, involution.
Special functions:
(a) Safety functions
eOverflow indication and interlock
device
eElectronic double entry prevention
and interlock
eAutomatic clearing circuit for im-
mediate use when power is switched
ON.
(b) Automatic calculating functions
eAutomatic calculation of multiplica-
tion and division by aconstant using
the
@
key.
eAutomatic accumulation into the
memory by depressing the key.
(c) Indication functions
e Digit indicators for checking the
number of digits entered.
eMemory lamp to indicate that the
memory is in use.
(d) Other functions
eNon-add key (@)for printing fig-
ures unrelated to calculation, such as
serial numbers or dates.
eAutomatic printing of punctuation at
every 3rd integral digit.
Elements:
5MOS-LSIs
Power source:
AC 100/115V (-15%—+10%) 50/60 Hz 18W
AC 220/240V (-15%—110%) 50/60 Hz 18W
Size:
268mm wide x311mm deep x135mm high
(10-1/2" x1-1/4" x5-3/8")
Weight:
6.3 kg (13 lbs. 14 oz.)
(Subject to alterations.)
3

MEMORY
2. KEYS AND CONTROLS
(e) —(¢) Numeral Keys
Depress the required keys in natural se-
quence.
(J Decimal Point Key
Depress this key at the desired position
when entering digits. When entering
decimal digits only, it is not necessary to
depress the(o]key before the decimal point.
Example: 0.1234
Operation: [-] (a EB)
If the decimal point is entered in the wrong
position, simply enter it once more in the
correct position. Correction is automatic.
Example: 123.4
Operation: (1) [2] (J (3) (J (4)
Plus Key
Depress this key after entering augend,
addend, or positive minuend. Figures are
printed together with +sign.
(5) Minus Key
Depress this key after entering subtrahend
or negative minuend. Figures are printed
in red together with —sign.
(xJ Multiplication Key
Depress this key after entering multiplicand
in multiplications.
~~
Figures are printed
together with xsign.
(:] Division Key
Depress this key after entering dividend in
division. Figures are printed together with
+sign.
Sign-Change Key
When negative numbers are entered in
multiplications or divisions, enter the
numerals and then depress this key. The
figures are printed, by depressing afunction
key, in red together with —sign. This key
can also be used for sign change of the
results. In this case, only —sign is printed.

Constant Key
Alock-type key used for performing con-
stant multiplications and divisions. Also
used for involution. Depress to lock the
key. Depress again to unlock it. In
multiplications, multipliers are printed
together with Kx sign, and in divisions,
divisors are printed with +K sign.
Total Equal Key
In additions and subtractions, the totals,
and in muluplications and divisions, the
results are printed together with *sign, and
the paper is automatically advanced by one
line.
At the same time, the calculating registers
are automatically cleared. However, if a
function key such as +], (5), Jor (5 is
depressed after the results or totals are
PAPER FEED
printed, these can be used as figures to be
calculated.
When the BB key is locked, the results or
totals obtained by this key are automati-
cally accumulated in the memory.
2] Sub-Total Equal Key
Sub-totals of addition and subtraction, and
the intermediate results of multiplication
and division are printed together with
sign, and the calculating registers are not
cleared. Even if the key is locked, the
intermediate results or sub-totals obtained
by this key are not added to the memory.
Total Recall Memory Key
Depress this key to recall the accumula-
tions in the memory. The contents in the
memory are printed together with Tsign.
At the same time, the memory is automa-
tically cleared.

Sub-Total Recall Memory Key
This key is used to recall the memory
intermediately. The contents in the memory
are printed with Ssign, but the memory is
not cleared.
Accumulation Key
An automatic accumulation key used in
calculating sums and differences of pro-
ducts and quotients. This key locks when
depressed; to release, depress once more.
EB Non-Add Key
This key is used for printing figures
unrelated to the calculations, such as serial
numbers or dates. When entering figures
and depressing this key, the figures are
printed together with #sign. The next
calculation can be performed without the
(clear) key just after the unrelated
figures are printed.
Clear Key
When this key is depressed, all the registers
except the memory register are cleared,
and Csign is printed.
Clear Entry Key
This key is used for clearing entries as in
the following cases;
(1) When wrong numerals are entered by
mistake.
(2) When adouble entry occurs.
(3) When numerals entered overflow.
If this key is depressed after afunction key
(i.e. 5) J(&), the calculating
registers are cleared and Csign is printed.
‘CS’ Memory Lamp
This lamp lights when figures are entered
in the memory, and indicates that the
memory concerned is in use.
ODigit Indicators
These show how many digits have been
entered. If an overflow condition or a
double entry occurs, all the digit indicators
flash continuously.
Decimal Point Selector
Preselects the decimal point in the results
or the entries except multipliers and
divisors. It specifies the decimal point at
0, 1, 2, 3, 4, or 6decimal digits. When the
key is locked, the decimal point of the
divisors in divisions is fixed to the pre-
selected decimal digit.
~~ Round-Off Switch
Gives automatic round-off (5/4) or drop-
off (3).
[ERE Power Switch
Power flows when this is turned ON, and
all circuits are automatically cleared for
immediate use.
EmiPaper Feed Lever
Press this lever for continuous printing
paper feed.

3. OVERFLOW INTERLOCK
MECHANISM
All the digit indicators flash continuously
and stop further operation in the following
cases :
(1) When the numerals entered overflow:
All the digit indicators flash when
the 14th integral digit is entered.
Depress the key to clear the
numerals.
When all the indicators flash contin-
uously after depressing the [+], [5],
(+) or key, it indicates that the
integral digits of the entered figures
exceed (13 digits —preselected
decimal digits). To resume calcula-
tions, depress the or key to
clear the entry and reset the decimal
point setting.
(2) When the results or intermediate
results overflow:
All the digit indicators flash and OF
sign is printed on the printing paper
when the integral digits of the results
or intermediate results exceed (13
digits —preselected decimal digits).
To resume calculation, depress
the key and reset the decimal
point setting.
(3) When the memory overflows:
All the digit indicators flash and OF
sign is printed when the number of
integral digits in the memory exceeds
(13 digits —preselected decimal
digits). To resume calculation, de-
press the @key to clear the memory
and depress the key to clear the
calculating registers.
Notes:
When two or more numeral keys are
depressed simultaneously by mistake, all
the indicators flash continuously and
further operation is halted. To resume
calculations, depress the key and re-
enter properly.

4. PRINTING PAPER &INK RIBBON
How to Set Printing Paper
1. Put the printing paper roll into the
roll holder positioned at the back of
Bh 3
]or the calculator.
i\2. Fold the edge (about 5cm or 2in.)of
Roll Holder |the printing paper.
3. Open the cover of the printing section, $
and bring up the paper holder attached
to the printing drum cover.
4. Insert the edge of the printing paper
into the feed guide position.
5. When the power switch is turned ON,
and the paper feed lever is pressed
down and held, the printing paper will
automatically feed into the correct
position.
esis
bie
Cp
{i
Printing Paper Roll
The Canola MP131L electronic calculator ©
can use any ordinary calculator roll paper
but it must be 57—58mm (2-1/4") wide,
with amaximum diameter of 86mm
(3-3/8"). Paper rolls of different size may
cause mechanical failure.

Holding Lever How to Replace Ink Ribbon
1. Open the lid covering the printing
section by lifting from the back side.
2. Remove the twin ink ribbon spools by
releasing the holding levers located at
each side.
3. Place one of the new twin ribbon
spools on the spool bed. Be sure that
new ribbon’s black half is at the top.
4. Run the ribbon along the outside of
the ribbon guide rollers, and insert the
ribbon between the pringing drum and
the key hammers, with roller paper
between the ribbon and the printing
drum.
5. Then place the another ribbon spool
on the another spool bed through
running the ribbon guide rollers.
6. Check the tension of the ribbon.
Ink Ribbon
The Canon EP102 Ink Ribbon should be
used with the Canola MP131L electronic
calculator. The EP102 Ink Ribbon is
13mm (1/2") wide and 6m (19". 8-1/4")
long and is available through all Canon
retail stores. The Canola MP131L can use
any ordinary ink ribbon but it must be the
same size of the EP102 Ink Ribbon.

10
5. KEY OPERATION
Key Touch
Depress the keys accurately. If two keys
are depressed simultaneously, all digit indica-
tors flash at the same intervals and stop
further operation.
How to Enter the Numerals
For right hand operation, place the index
finger on the (4] key, the middle finger on
the (8) key and third finger on the [8] key.
Make ahabit of keeping your fingers in
these positions. Thus, depress the left
column (1) (4 keys with the index
finger, the middle column [2] (&] keys
with the middle finger, and the right
column (3) keys with the third
finger. With practice, blind operation will
soon become possible.
Notes:
*Even when the numeral keys and function
keys are depressed at random, nothing is
the matter with the calculator. In this case,
depress the key to clear all entries to the
registers.
*Over a period of time, paper dust,
particles and other residues will accumulate
on the characters of the printing drum,
resulting in unclear or indistinct prints.
To avoid this, it is recommended that the
printing drum be cleaned with astiff brush
when 10 paper rolls have been used; or at
least once every three months.
*Avoid using the calculator in direct sun-
light.

II. CALCULATION EXAMPLES
Preparations for Calculation
1.
2.
1.
Connect the cord to the socket.
Turn the power switch ON. The print-
ing drum becomes operational in about
two seconds. Then, the calculator is
ready for calculation.
Set the decimal point selector at a
desired position. In this case, fix the
desired decimal point at awhite dot
on the board.
Set the round-off switch to the left for
round-off or to the right for drop-off.
Addition and Subtraction
Setting
Setting
11

12
Setting
®
«CHE
Notes:
The sub-totals are obtained by the (£]
key and the totals are by the key.
All the calculating registers are auto-
matically cleard by the
[2]
key. There-
fore, subsequent calculations can be
performed without depressing the [co]
key.
Even when the results are negative
numbers, they are obtained in the true
value. In this case, the results and
signs are printed in red, indicating that
they are negative numbers.
Set the decimal point selector to the
required position. If the number of
decimal digits entered exceeds the
preselected number, the surplus
decimals are ineffective for the calcu-
lation.

2. Multiplication
Setting
®
«["
Notes:
1. By depressing the [x] key, the multipli-
cand being entered is printed accord-
ing to the preselected decimal point
position. Then enter the multiplier,
and depress the (¥], or the
[2]
key, and
the muluplier and the results are
printed in succession.
Clearing is automatic after multiplica-
tion and division. There is no need to
depress the [c] key after each calcu-
lation.
The integral digits of the multiplicand
can be entered up to (13 digits—pre-
selected decimal digits), but the multi-
Setting
Setting
®
«OH
Notes: Chain multiplication can be per-
formed by the same operation in sequential
order. If the intermediate results are re-
quired, depress the key. The final
results can be obtained by continuing the
multiplication.
4.
plier can be freely entered.
The result is obtained up to the
preselected digits of the decimal point
selector.
If the (3) key is depressed by mistake,
instead of the (xJ key, simply depress
the [x] key after it. Multiplication can
be continued as normal.
Example: Ix3=135
Operation: 5(] [x] 3
Print: S5e¢ +
x
Je =
15¢ *
13

14
3. Division
Setting
®
«(Hl
Notes:
1. When the (J key is depressed, the
dividend is printed according to the
preselected decimal point position.
When the divisor is entered and the
or the
[2]
key is depressed, the divisor
and the results are printed in succes
sion.
The integral digits of the dividend can
be entered up to (13 digits—pre-
selected decimal digits), but the divisor
can be freely entered. The result is
Setting
«~[~
Notes: Negative division can be performed
by using the
&&
key.
Setting
Notes:
1. Chain division can be performed in
sequential order. There is no need to
depress the or the key after
entering the dividend or divisor. The
intermediate result can be obtained by
depressing the key. Subsequent
obtained up to the preselected digits
of the decimal point selector.
If the [x] key is depressed by mistake,
instead of the [3] key, just depress the
(z]key after it. Division can be conti-
nued as normal.
Example: 15&3=5
Operation: 15(x])(3] 3
Print: I15¢ Xx
bk
Je =
5e¢ ¥%
calculations are continued normally
until the final result.
The position of the decimal point in
intermediate results is obtained in
accordance with the setting of the
decimal point selector.

4. Mixed Calculation
Setting
.
~~
Notes: It is also possible to use the
[+]
key
instead of the
(&]
key at step 5.
15

16
5. Constant Calculation
Notes:
When the
EB
key is locked in multiplica-
tion, the first figure (multiplicand) entered
becomes the constant. Subsequent calcu-
lations are automatic.
Setting
Notes:
In division, the second figure (divisor)
entered after the
Bl
key is locked becomes
as the constant. Subsequent calculations
are automatic. In constant division using
the key, the number of decimal digits
in the divisor is limited to the preselected
setting.

6. Involution &Reciprocal Calculation
Example
1) Squaring anumber
3.141592 =9.869588
2) Raising to nth power
38 =16,561
Setting
1)
2)
1)
®>
a3)
4)
5)
6)
7)
8)
Notes:
1. To obtain a”, depress the
(2]
key (n-1)
times. For 2nd, 4th and 8th powers,
the following method can also be used:
Operation: 3(x]
[2]
(2nd power) (x]J(2]
(4th power) [x]
[8]
(8th power)
It is possible to use the
(2)
key instead
of the
(&]
key.
Example Setting
3) Reciprocal Calculation 1)
=®
3=0.1250
:
2)
«« [I 3)
4)
Notes:
1. To obtain 1/a”, depress the key n
times. Another method is possible as
follows:
Operation: @2(=
In this case, depress the key (n+1)
times.
It is possible to use the
£]
key instead
of the
[8]
key.
Operation
3.14159 [x]
bd)
GJ
LJ
fi)
fe)
fe)
(ie)
(5
&
(2nd power)
(3rd power)
(4th power)
(5th power)
(6th power)
(7th power)
(8th power)
Operation
1
2no)
(+)
10
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17

18
7. Calculation Using Memory
When the
B
key is locked, and the (¥]key is
depressed, the result is automatically added
to or subtracted from the memory. At the
same time, the memory lamp lights to
indicate that the memory is in use.
However, depressing the
(£]
key does not
effect accumulation in the memory.
To recall the contents of the memory
intermediately, depress the
@
key. In this
case, the memory is not cleared. By depres-
sing the key, the contents of the
memory is printed and at the same time,
the memory is automatically cleared.
Setting
Setting

Setting
Setting
19

20
II. APPLIED CALCULATION
Setting
Setting