Canon Canola L812 User manual

Canon
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PUB. IB3102H 0976B11.6 PRINTED IN JAPAN
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INSTRUCTIONS
English Edition

Description of Canola L812
•v . ,‘ui jm.. .... Ui*'
attery Chamber
AC Adaptor Jack
Display and
Ind
Panel
Power Switch
Operational Keys and Switches
Q Clear Key: Used for clearing all entries
and calculations except memory.
GB Clear Indicator Key: Used for correcting
entries.
DOQBB Function Keys: Depress them
according to the calculation expression.
□ Numeral Keys: Used for entering
numerals.
B Decimal Point Key: Depress it at the
position of the decimal point of the numer¬
als to be entered. In the case of fractional
numerals only, it is not necessary to depress
the d key before the decimal point.
E3 Percent Plus-Minus Key: Used for per¬
forming percentage calculations and add-on
& discount calculations.
ru Accumulation Switch: Used for obtain-
AM
mg sums and differences of products and
quotients. When this switch is set -to AM,
results are accumulated in the memory by
depressing SJkey.
89 Recall Memory Key: Used for recalling
the contents of the memory.
0 Clear Memory Key: Used for clearing
the contents of the memory.
CO Decimal Point Switch: Used for desig¬
nating the decimal point position of the
result and can be preselected at 0, 2 and F
(floating).
3 Sign Change Key: Used for converting
signs of the indicated value.
2
3

Before Operation
1. How to remove the battery cover:
Slide off the battery cover located on the
back side of the calculator.
2. How to load the batteries:
Load the battery chamber of the Canola
with four new penlight dry batteries (size
AA). When loading the batteries, put
the batteries from the (—) side according
to the diagram inside. The Canola will not
operate if the batteries are placed upside
down. If the display becomes dim, it
means there is not sufficient voltage, in
this case you should change all of the
four batteries at the same time.
Note: The Canola L812 can be operated
by normal AC current with the
Canon AC Adaptor AD-1 (option).
Refer to page 11 for AC Adaptor
AD-1.
Be sure to take out the batteries when not
using the calculator for more than one
■
month.
How to Operate
1. Set the power switch at ON, and depress
the Q key.
4
2. The keys are operated according to the
calculation expression.
3. Depress the Q key when incorrect
entries are made. You may then make
new entries, and continue the operation.
When function keys ( D O B Q ) are
depressed incorrectly, operation can be
proceeded by depressing the right key.
*
4. After completing a calculation and pro¬
ceed to next, it is not necessary to
depress the Q key since the previous
calculation is cleared automatically. But
in calculations starting with a negative
number, depress the Q key before start¬
ing the calculations.
5. Set the decimal point switch at 0, 2 or F
. according to the content of the calcula¬
tion. When the decimal point is set at 0 or
2, the result is automatically rounded off
to the corresponding number of decimal
digits, and when set at F (floating)
position, the result is rounded down.
6. Please turn on the power switch gently.
If the switch is turned on and off re¬
peatedly, the display may temporarily
function improperly by not lighting or by
lighting at random. If this should occur,
turn off the switch at once, and then turn
it on again after waiting 2 or 3 seconds.
Note; Please keep in mind that accurate
results depend on correct key
operation.
5

2. Multiplication
and Division
m
o
1) 3.6 x 1.7= 6.12
3.6 '
2) -369=12.3=-30
369!
( 6 . 12 )
2.3BK-30.00}
1. The minus sign at the leftside of the
display pane! lights up when an entry or
result is a negative number.
2. When the entered numerals exceed 8
digits, only 8 left-most digits are keyed in
and excess digits are ignored.
Ex. 12345678.9 *= 987
^ . __ r . _ *
9 digits
Operation: CG 12345678
(12508.285)
3. When the integers of the calculation
results exceed 8 digits, the overflow sign
{£) lights up and further operation is
locked, and only the 8 leftmost signifi¬
cant digits are displayed.
987
Ex. CD 12345x5678x200=14018982000
12345 □ 5678 □ 200
(£ 140. 1 8982)
t
Assume 3 digits have been dropped by
reading the position of decimal point.
6
The overflow sign is also indicated at the
following instances:
• When divisor is 0 in division.
Depress the Q key to release the keyboard
interlock, and start the further operation.
The first operation in constant calculation is
performed according to the calculation ex¬
pression. From the second operation, each
calculation result is obtained by just entering
the numeral and depressing the El key.
Raising to the «-th power can be obtained
automatically by depressing the EB key
(nA) times.
7

8
1. When the Accumulation Switch is set to
AM, the results obtained by the d key
are automatically accumulated in the
memory.
2. When data are put in the memory,
memory sign (") on the display panel
indicates the memory is in use.
3. When integers of memory content exceed
8 digits, overflow sign (H) lights up and
further operation is locked, but over¬
flowed memory contents can be recalled
by depressing the Q and Q keys.
ex. CP {33333333 x 3) + {234 x 45) = 100010520
(9 d igits)
CO 33333333 Q 3
234 Cl 45
[It 99999999.)
(H 10530.)
(it 0.)
(in. 0001052)
4. T he memory content is protected against
calculation result overflowed.
ex. ™ (20 x 3) + (40 x 5) + (50 x 6) = 560
20 □ 3 0 (li 60.)
40 Q 5 0 (ll 200.)
123456 Q 67890 (£ 8.3814278)*
B u i o.)
50 O 60 (II 300.)
Q (I I 560.)
* Overflowed calculation result cannot be
accumulated in memory.
9

8. Mixed Calculation
1) 9t5x3.2 + 7 =
12.76
2) (2 + 4) 4- (-3) x
8.1 =5 —16.2
Specifications
Type: Mini desk-top electronic calculator
Keyboard: 10 key system
Display: 8-digit fluorescent tube display
Registers: 3 calculating registers and 1 memory
register
Calculation capacity: 8 digits in all calculations
Decimal point system: Leftmost digit priority with
floating decimal point system.
Entries: Floating.
Intermediate results of chain multiplication and
division: Floating.
Results: The following settings exist on the
decimal point selector 0, 2 and F {floating}.
Negative numbers: True value with a minus sign
Types of calculation: Addition, subtraction, multi¬
plication and division. Multiplication and division
by a constant. Chain multiplication and division.
Sum and difference of products and quotients.
Raising to powers. Percentage calculation. Add-on
and discount calculation. Various mixed calcula¬
tions.
Indication functions: Zero suppressed indication
panel. Minus sign. Overflow sign. Memory overflow
sign.
Automatic calculation functions: L y Switch for
accumulation of calculation results. Constant
multiplication and division. Raising to powers.
Safety devices: Overflow keyboard interlock
Elements: MOS LSI
Power source:
1. 4 penlight dry batteries (size AA) DC 6V 0.6W
Alkaline batteries make possible about 15 hours
of continuous use. Manganese batteries make
possible about 6 hours of continuous use.
2. AC with the Canon AC Adaptor AD-1.
Usable temperature: 0°C to + 40° C (32° F to
104° F)
Size: 131mm wide x 153mm long x 44mm high
(5-3/16" x 6-1716” x 1-3/4")
Weight: Approx, 350g (12.3 oz.) including dry
batteries
Subject to alterations.
AC Adaptor (option)
The Canon AC Adaptor AD-1 is designed to
allow the Canola to be plugged in and
operated by normal AC current.
» There is no power consumption of the bat¬
teries as long as using the AC power.
How to use
1. Insert the out-put cord of the AC Adap¬
tor AD-1 to the socket of the Canola.
2. Plug in AC Adaptor AD-1 to the AC
outlet.
3. Turn on the power switch of the Canola
for immediate operation.
* Use only the Canon AC Adaptor AD-1
for the Canola.
* Do not leave the AC Adaptor AD-1
connected to outlet when not actually in
■
use.
When connecting/disconnecting the AC
h Adaptor into/from the socket of the calcula¬
tor, switch off the power.
10