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
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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.