Casio H-1 User manual

CASICJ H-1

Dear customer,
Congratulations
on your purchase of this electronic calculator. To utilize its
full features no special training is required, but we suggest you study this in-
struction manual
to becomefamiliar with its many abilities. To help ensure its
longevity, do not touch the inside of the calculator, avoid hard knocks and
unduly strong key pressing. Extreme cold (below 32°F
or QOC). heat (above
104°F
or 40°C) and humidity may also affect the functions of the calculator.
Neveruse volatile fluid suchas lacquerthinner, benzine, etc.
for cleaning the
unit. Forservicing contact the original store or nearbydealer.
*For operationalexamples, refer to page 43 ..
CD

1/ NOMENCLATURE
Power switch: .
Move the switchforward to activate the calculator.
I 0·1 Read-out:
Shows each entry and result through aDigitron tube panel. suppressing un-
necessary
0'8 (zeros}.
ill-en c:JNumeral/Decimal point keys:
Enter numerals. Fordecimal places, use thec:Jkeyin itslogical sequence.
D, CI, ~, =, BFunction command/Result keys:
Perform the four basic calculations when these keys are pressed in formula
sequence.
An incorrect function command ( D, CI, ~ or ~) is·automati-
cally cleared
by pressing the correctfunction command key.
TheBkey obtainsanswer after entering numerals and function commands.

B< 8) Memory plus(minus) key:
Transfers the numberdisplayed to the memory positively (negatively).
Obtains answer in
four functions and automatically accumulates it into the
memory positively (negatively).
~Memory recall key:
Recalls the contents of thememory without clearing.
OOPercent key:
Performs percentage calculations, including add-ons, discounts and mark-
ups.
tOSquare root key:
Extracts the square root ofthenumber displayed.
BClearkey:
Clears entry for correction. .
When pressed afterafunction cOfTlmand key, it clears the entire machine ex-
capt the memory.

rJ3AIl clearkey:
Clears the entire machine including the memory, and releases overflow or
errorcheck.
r2...,
FCUT 5/4
I .. IDecimal mode selector:
At the "F" position, the decimal floats and the underflow system works to
protect thesignificantdigits.
At the "CUT" position, an answer is automatically cut off at 2decimal
places, applying floating mode
for entry and intermediate result.
At the "5/4" position, an answer is rounded off in thesame way asabove.
2/BAlTERV MAINTENANCE
This calculatoroperates on either dry batteries or AC (with an ACadaptor).
@)

DRY BATTERY OPERATION
Two AA size manganese dry batteries (UM-31 give approximately 8hours
continuous operation (16 hours on type SUM-31. When battery power de-
creases, thewholedisplay darkens. Batteries should then be renewed.
Switch OFF the power, slide open the battery compartment lid
on the back
of the unit, remove dead batteries and insert new batteries with polarity as
indicated.
* Be sure to replace both batteries.
*Never leave dead batteries in the battery box as they may cause malfunc-
tions.
* It is recommended that batteries be replaced once ayear to prevent the
chance
of malfunctions due to batteryleakage.
AC OPERATION
Use only an adaptor with the same voltage rating (100, 117, 220 or 240VI as
your
power supply to prevent componentdamage. Plug the AC adaptor into .
the AC outlet andcord into the unit, this automatically cuts off batterypower
supply.
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,,_ Jf 13I!1!B·· ! 1. __ !:i3U
*WHERE USED FROM THE MAINS THIS CALCULATOR MUST ONLY BE
USED WITH ACASIO MAINS ADAPTOR. THIS IS DUE TO THE RISK
OF DAMAGE TO THE CALCULATOR SHOULD IT BE USED WITH A
MAINS ADAPTOR OTHER THAN ACASIO
MAINS ADAPTOR.
31 OVERFLOW
Overflow is indicated by the "En sign and stops further calculation.
To release the overflow check, press the C3 key.
Overflow occurs:
a) When the integer part of an answer, whether intermediate of final, ex~
ceeds 8digits (7 digits for negatives). However, the significant digits of
theanswerare givenand the decimal point indicates that the true decimal
position is 8digits
to the right.
b)
When the integer part of an accumulated total in the memory exceeds8
digits (7 digits for negatives). ®

4/SPECIFICATIONS
Abilities:
Four basic calculations, constants for +I -I xI+ , automatic accumulation
in
four functions, direct access to the memory, percentage calculations
including add-onsldiscounts and mark-ups, square roots and various kinds
of practical calculations.
Capacity: 8digitsincluding minus(- )sign.
Read-out: Digitrontubepanel, suppressing unnecessary
O's (zeros).
Decimal point: Full floating, or fixed with cut-off or round-off at 2decimal
place.
Overflow check: Indicated by the "E" sign, locking thecalculator.
Main component: Onechip LSI
Power consumption: 0.2 W
Power source:
AC; 100, 117,220 or 240V (::l:: 10V), 50/60Hz, with an applicab'e AC adaptor.
DC:
Two AA size manganese dry batteries (UM-3) give approximately 8
(J)

hourscontinuous operation (16 houts on type SUM-3).
Ambient temperature range: OOC -40°C (32°F - 104°F)
Dimensions: 19.7 mmH x 77 mmW x 136 mmO
(3/4"H x 3"W x 5-3/8"0)
Weight: 142g (5 oz) including batteries.
®

GUIDELINES LAID DOWN BY FCC RULES FOR USE OF
THE
UNIT IN THE U.S.A.(notapplicable to othEirareas).
This equipment generates and uses radio frequency energyand if not instal-
led and used properly,
that is, in strict accordance with the manufacturer's
instructions,
may cause interference to radio and television reception. It has
been typetestedand
found to comply with thelimits for aClass Bcomputing
device in accordance
with the specifications in SubpartJ of Part 15 of FCC
Rules, which are designed to provide reasonable protection against such in-
terference in aresidential installation. However, there is
no guarantee that
interference will not occur in aparticular installation. If this equipment does
cause interference
to radio or television reception, which can be determined
by turning theequipment off and on, theuseris encouraged to try to correct
theinterference
by one or more of thefollowing measures;
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