Casio BF-100 User manual

_

ELECTRONIC

CALCULATOR

CALCULADORA

ELECTRONICA

OPERATION

MANUAL

DE

OPERACION

O062E

SA

#®

Printed

in

Japan

Thank

you

very

much

for

purchasing

our

electronic

calculator

with

6

built-in

financial

calculation

functions.

This

instruction

manual

explains

the

fundamental

methods

for

the

use

and

handling

of

the

calculator.

Please

read

it

carefully

so

that

you

may

fully

understand

all

of

the

various

functions.

|

Please

notify

us

of

any

errors

or

omissions

you

find

in

this

manual.

We

cannot

be

responsible

for

damage

or

loss

resulting

from

the

information

contained

herein,

use

of

calculation

examples,

misprints

or

omissions.

rn

CONTENTS

T/INOMENCLATURE

2...

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nee

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tee

eee

eens

2

Z2/POINTS

OF

CAUTION

2...

ccc

ec

ee

eee

ee

eee

tenet

eee

eens

10

3/IBATTERY

MAINTENANCE

...

1...

ccc

ee

eee

teen

tenes

10

4/BEFORE

USING

THE

CALCULATOR

........

eee

ete

tenes

11

5B/BASIC

CALCULATIONS

2...

cece

cee

ee

er

eee

te

eer

eee

eens

13

Four

Basic

Calculations

0.0.0.

ne

ee

13

Constant

GalewlatiGns:

20.8

we

4g

sh

aaa

he

Se,

ee

does

Babee

EE

Oe

Ra

ae

ale

Ser

13

Percentage

Calculations

0...

es

15

Memory

Calculations...

0.

ee

eae

on

re

in

17

Dale

Cateulitions:

64.44

sn

ae

ee

a

ee

a

ee

ie

aoe

a

pet

18

Farner:

Calculations:

6

soe.04

bec

head

alee

ba

ee

a

OS

Re

ee

aie

He

ob

ea

ee

OR

21

G/FINANCIAL

CALCULATIONS

2.0...

6.

cee

ee

eee

ee

eee

ees

23

Compound

Interest

Calculations

.........-.--0.

SSE

LR

os

Oe

disses

U

ita

cia

Ieee

24

Coan

Caleulations

fentcdie

ss

£

oe

acne

bia

ee

ek

SR

Eee

a

ges

by

Ge

Bose

as

30

Annual

Payments

2.0.00

0000

0c

ce

ee

eee

ee

eee

bee

DE

eee

nee

es

36

Bonus

Payments.

o.oo

ee

lead

hep

dae

ae

ee

eb

etek

ee

De

de

Re

ae

39

fistallmentSavinigs:

.a.h.fa

beetle

ead

Ge

SEES

ea

a

He

eae

eats

haha

baal

RS

42

Deferred

Annuity

Present

Values

205.

ee

49

7/APPLICATIONS

......

Sie

atieree

se

ase

kus

euaks

eres

he

eer

er:

51

B/SPECIFICATIONS

1...

0...

cee

eee

ee

tee

eee

teeta

58

pore

1

-.

et

i.

3

ewe

1/NOMENCLATURE

”

eee

en

eee

(1)

Power

switch

aan:

Move

the

slide

switch

to

the

right

to

turn

the

power

ON.

The

independent

memory

and

Made

designation

for

financial

calculation

will

be

retained

even

after

the

power

is

turned

OFF.

(2)

Display

ENTINV

EXET

INT

LOAN

SF

AMORT

BNS

(ry

ama

M

Im

muUecc

moc

Le

K

(EL

ltt

CE

at,

(iss

(314)(24)————__

(25)(26)(27)

The

display

shows

input

data,

intermediate

results

and

results

of

operation,

(18)(19)(20)—---.._]

fe

(211221123)

A

date

is

displayed

as

follows:

(14)(13)(12)

oe

“—"

will

not

be

lit

from

the

year

2000

to

2099.

[Indicating

May.

29

(Fri.),

1981.)

on

ae

Year

Month

Date

Day*

esac

i

ae

1

i

ae

ee

4

;

Sun.

Mon.

Tue,

Wed.

Thu.

[esa

Fri,

|

Sai.

-3-

“E™

(error

check,

see

page

12)

may

be

displayed

in

the

position

of

the

least

digit

In

financial

calculations,

"INT",

“LOAN”,

“SF,

“AMORT",

“BNS",

“GEM

ange

“fm

will

be

displayed

to

indicate

the

operating

mode,

“ENT/INV’

to

indicate

«.

condition

available

for

data

input,

and

"py"

to

indicate

the

condition

available

for

recs:

output,

“M"

will

be

displayed

when

data

is

stored

in

the

independent

memory.

“KO

will

be

displayed

during

calculation

with

constants.

ENT

INV

(3)

Entry/Inverse

key

e

When

entering

data,

press

this

key

just

prior

to

pressing

each

key.(Symbolized

here

as

&

}

e@

When

activating

the

functions

printed

in

orange

on

the

keyboard,

press

this

key

just

prias

to

pressing

each

key.

(Symbolized

here

as

{w))

ANS

(4)

Answer

key

(Symbolized

here

as

@3

)

For

financial

calculations,

to

find

the

answer,

press

this

key

just

prior

to

pressing

each

key

(5)

al

Mode

key

(Symbolized

here

as

)

@

Press

this

key

to

choose

the

proper

mode

for

financial

calculations

(INT,

LOAN,

St.

AMORT,

BNS).

When

this

key

is

pressed,

the

mode

will

change

in

sequence

from

INT

to

LOAN

to

SF

to

AMORT

to

BNS

to

INT.

Selected

mode

will

be

displayed

when

the

key

os

pressed.

.

@

if

(oe)

key

is

pressed

following

the

key,

Beginning

of

Period

Payment

(

Ba)

or

End

of

Period

Payment

(

GB

)

will

be

selected

and

displayed.

"

Any

mode

may

be

used

when

performing

basic

calculations,

-4-

(6)

(0)

—(S),

(-)

Numeral

and

decimal

point

keys

To

enter

numerals,

press

these

keys.

For

decimal

places,

press

the

G)

key

in

its

logical

sequence.

(7)

€3,

&8,

£9.

Gi.

Four

basic

calculation

and

equal

keys

When

performing

four

basic

calculations,

press

these

keys.

The

Ei

key

obtains

an

answer.

*

Constant

calculations

will

be

performed

by

pressing

each

key

(E93.

GY.

E39

or

H})

twice

successively.

(See

page

13.)

(8)

Percent

key

When

performing

percentage

calculations,

press

this

key.

(9)

Sign

change

key

When

changing

the

sign

of

displayed

number

from

plus

to

minus

and

vice

versa,

press

this

key.

:

on

FX

: .

,

(10)

“et?

All

clear/Financial

calculation

clear

key

@

Press

this

key

to

clear

all

data

except

independent

memory

and

financial

calculating

value.

Also

press

for

display

when

display

is

blank

as

a

result

of

the

Auto

Power

Off

Function

(Automatic

Power

Saving

Function.

....

see

page

12).

e

For

financial

calculation,

prior

to

beginning

to

calculate,

press

@)

G

to

clear

total

value

memory.

(11)

(@

Clear

key

When

clearing

entry

for

correction,

press

this

key.

M+

(12)

Memory

plus

key

(Symbolized

here

as

3)

Press

this

key

when

adding

displayed

number

to

the

contents

of

the

independent

memory,

It

has

the

same

function

as

that

of

the

EJ

key;

it

obtains

an

answer

in

four

basic

calculations

and

automatically

add

the

answer

to

the

contents

of

the

memory.

Mow

(13)

@

Memory

minus

key

(Symbolized

here

as

©)

Press

this

key

when

subtracting

displayed

number

from

the

contents

of

the

independent

memory.

It

obtains

an

answer

in

four

basic

calculations

and

automatically

subtracts

the

answer

from

the

contents

of

the

memory.

(14)

Ee

Memory

recall

key

(Symbolized

here

as

a)

)

Press

this

key

when

recalling

the

contents

of

the

independent

memory

without

clearing.

Min

.

(15)

@

Memory

entry

key

(Symbolized

here

as

(3

)

.

Press

this

key

when

stering

displayed

number

to

the

independent

memory.

Old

data

held

in

the

memory

will

be

automatically

cleared.

;

-6-

PRN

(16)

ss

Principal/Number

of

days

key

®

To

calculate

the

principal

portion

of

an

amortized

loan,

press

this

key

following

the

(#3)

key.

This

key

will

only

be

used

to

calculate

equal

periodic

payments

in

the

AMORT

mode.

(Symbolized

here

as

fj)

,

@

When

inputting

the

number

of

days

from

the

date

of

loan

lo

the

date

of

the

first

payment,

press

this

key

following

the

fj

key.

This

key

will

only

be

used

to

perform

bonus

payment

in

the

BNS

mode.

(Symbolized

here

as

(d))

BALIN

(17)

§&

Balance/Number

of

months

key

®

To

find

the

remaining

blance,

press

this

key

following

the

@g

key.

(Symbolized

here

as

a)

)

*

When

inputting

the

number

of

months

from

the

month

of

loan

to

the

first

bonus

payment

month,

press

this

key

following

the

fi)

key.

This

key

will

only

be

used

to

perform

bonus

payment

in

the

BNS

mode.

(Symbolized

here

as

(n))

INT

(18)

gM

Interest

key

When

inputting

interest,

press

this

Key

following

(a4),

To

find

interest,

press

following

fs}.

(Symbolized

here

as

(7)

)

n

(19)

§

Number

of

periods

key

ie

When

inputting

number

of

periods.

press

this

key

following

fq.

To

find

number

of

periods,

press

following

@.

(Symbolized

here

as

()})

fo

awe

Pobre

eh

re

ot

i

%

(20)

gg

Interest

rate

key

When

inputting

interest

rate,

press

this

key

following

fi).

To

find

interest

rate,

press

following

a).

(Symbolized

here

as

(i)

)

PMT

(21)

g@

Payment

key

When

inputting

monthly

payment

amount,

press

this

key

following

fy)

.

To

find

monthly

payment

amount,

press

following

&.

When

using

this

key,

the

number

of

periods,

interest

rate,

etc.

must

be

on

a

monthly

basis.

(Sy

mbolized

here

as

fu)

PY

(22)

gm

Present

value

key

When

inputting

original

amount,

present

value

or

amount

borrowed,

press

this

key

following

eMT

To

find

original

amount,

present

value

or

amount

borrowed,

press

following

&§

.

(Symbolized

here

as

Fv)

}

FV

BNS

(23)

gg

Future

value/Bonus

key

®

When

inputting

future

value

(total

future

value

of

principal

plus

interest},

press

this

key

following

fy).

To

find

future

value,

press

following

fg.

(Symbolized

here

as

fy)

e

When

inputting

bonus

payment,

press

this

key

following

&.

This

key

will

only

be

used

to

perform

bonus

payment

in

the

BNS

mode.

(Symbolized

here

as

&3)

-§-

DATE

(24)

gg

Date

key

,

When

performing

number

of

days

calculation,

press

this

key

after

inputting

numbers

for

year,

month

and

date.

(Symbolized

here

as

ait)

)

r

(25)

gg

Square

root

key

.

To

calculate

the

square

root

of

displayed

number,

press

this

key.

(Symbolized

here

as

(7)

log

7

(26)

Common

logarithm

key

To

find

the

common

logarithm

of

displayed

number,

press

this

key.

(Symbolized

here

as

(cg)

xr”

(27)

ge

Power

raising

key

To

raise

the

base

x

to

yth

power.

(Symbolized

here

as

&)

we

reins

e

eamuanpeeee”

2

ge

Ree

PRAM

ain

td

aM

Pn

te

FORA

nek

ea

td

a

LE

RN

cde

a

ane

erate

tree

A

CR

EE

uate

RO

TR

te

ut

Rae

denied

oe

2/POINTS

OF

CAUTION

*

Since

the

unit

contains

precise

electronic

components,

never

attempt

to

disassemble

it.

For

servicing

contact

your

retailer

or

a

nearby

dealer.

*

Be

careful

not

to

drop

the

unit

or

handle

it

roughly.

Avoid

operating

the

keys

roughly.

:

F :

*

Avoid

using

the

unit

in

extreme

temperatures

(below

32

F

or

O°C,

or

above

104°F

or

°

i

Ex

{

2

humid

conditions.

40’C).

Also

protect

the

unit

from

extremely

dusty

or

;

“To

clean

the

unit,

use

a

soft,

dry

cloth

or

slightly

damp

cloth

with

neutral

detergent

to

wipe

it

off.

Never

use

thinner,

benzine

type

solvents

or

alcohol

for

cleaning.

3/BATTERY

MAINTENANCE

r

decreases,

the

whole

display

darkens.

Battery

should

then

be

renewed

t

patter

owe

3)

:

pee

oka

the

power

before

changing.

For

battery

specifications,

see

page

57.

Be

sure

to

switch

OFF

Replacement

of

battery:

1)

tide

open

the

battery

compartment

lid

on

the

back

of

the

unit.

2}

Remove

dead

battery

and

insert

new

battery

with

the

plus

terminal

(flat

side)

on

top.

a

~10-

3)

Replace

the

battery

compartment

tid.

*

Before

inserting

new

battery,

be

sure

to

thoroughly

wipe

it

off

with

a

dry

cloth

to

maintain

good

contacts.

*

Never

leave

dead

battery

in

the

battery

compartment.

*

Remove

battery

when

not

using

for

an

extended

period.

*

It

is

recommended

that

battery

be

replaced

every

2

years

to

prevent

the

chance

of

malfunctions

due

to

battery

leakage.

,

Note:

For

initial

operation

after

battery

replacement,

turn

the

power

switch

on

and

off

twice

(i.e.

ON-OFF-ON).

4/BEFORE

USING

THE

CALCULATOR

™

Correction

.

*

If

you

are

aware

of

data

entry

error

before

pressing

a

command

key,

oress

(@

and

re-input

the

correct

data.

.

if

you

have

pressed

3,

f2,

€or

by

mistake,

you

may

press

the

correct

key

immediately.

-y1-

io

See

®

Overflow

or

error

check

Overflow

or

error

is

indicated

by

the

“E'

sign

and

stops

further

calculations.

Overflow

or

error

occurs:

1)

When

the

integer

part

of

an

answer,

whether

intermediate

or

final,

exceeds

10

digits.

However,

the

significant

10

digits

of

the

answer

are

given

and

the

decimal

point

indicates

that

the

true

decimal

position

is

10

digits

to

the

right.

2)

When

the

integer

part

of

an

accumulated

total

in

the

memory

exceeds

10

digits.

3)

When

a

number

is

divided

by

O

(zero).

4)

When

function

calculation

or

financial

calculation

is

per

the

input

range

(see

page

54

to

56).

To

release

the

overflow

or

error

check,

press

the

f

or

(

key:

G

for

starting

a

new

calculation,

and

@

for

continuing

the

calculation,

which

clears

only

the

E”’

sign.

formed

with

a

number

exceeding

™

Auto

power

off

function

if

the

calculator

is

left

with

the

power

switch

at

the

ON

position,

the

auto

power

off

function

automatically

turns

off

the

power

in

approximately

6

minutes,

thus

saving

battery

life.

Power

is

resumed

either

ty

pressing

the

G

key

or

by

re-operating

the

ON-OFF

switch.

~12—-

5/BASIC

CALCULATIONS

5-1

Four

Basic

Calculations

EXAMPLE

OPERATION

READ-OUT

534123-63=113

5381238638

113.

0.456x(-89)+12=—-3.382

J456889H0126

“3.302

(56x3-89)+5.2+63

=7B.19230169aee.

5603089050)20638

_78.19230769

5-2

Constant

Calculations

EXAMPLE

OPERATION

READ-OUT

3+2.3=5.3

2(J

30038

6+2.3=8.3

68

Se

13

-

i.

See

EXAMPLE

OPERATION

READ-OUT

7-5.6=1.4

567

|

1.4

-4.5-5.6=

-10.1

40)5@8

2.3x12=27.6

12802038

(-9)x12=-108

96

|x

—

108.

74=2.5=29.6

20/5674

|

85.2=2.5=34.08

17+17+17+17=68

1.77=2.89

1.77=4.913

1.7°=8.3521

85028

|x

1708

=

a

oO

x

00

16)

oO

NO

—_

-14-

Ww

BIN

ore

|

ae

q7

0:25

Me

2

mn

=0.0625

5-3

Percentage

Calculations

EXAMPLE

£9040

1500

2<.ae

sees

Se

hee

180

Percentage

of

660

against

880....--

75%

15%

add-on

of

2500

...----+00

00:

2875

25008315t)ma

|

2875.

|

,;

apeie[,

0-25)

Bik

0.0625

OPERATION

READ-OUT

150089128

scomesom

[7]

25%

discount

of

3500

...--

+++

0+"

2625

3500825%)

&

|

2625.

|

If

you

made

$80

last

week

and

$100

this

week,

what

ts

the

percent

increase?

..----

—-15-

roomeoss

[25]

(%)

fs

Nee

EXAMPLE

12%

of

1200

..

6.

.

eee

144

18%

of

1200.0...

eee

ee

eet

216

23%

of

1200...

eee

tts

276

Mark-up

What

will

the

selling

price

and

profit

be

when

the

purchasing

price

of

an

item

$480

and

the

profit

rate

to

the

selling

price

is

25%?

,

Mark-down

What

will

the

bargain

price

and

loss

be

ifa

$130

item

is

sold

at

a

loss

rate

of

4%

of

the

bargain

price?

OPERATION

1200

96312

&)

18%)

23%)

480

325%)

(Subsequently)

Ea

130N444)

(Subsequently)

Gad

~16-

READ-OUT

(Selling

price)

.

(Profit)

(Bargain

price)

(Loss)

+)

99+4=

24.75

5-4

Memory

Calculations

*

The

contents

of

the

memory

will

be

retained

even

after

the

power

is

turned

OFF.

*

When

a

new

number

is

entered

into

the

memory

by

f4

key,

the

stored

is

automatically

cleared

and

the

new

number

is

put

in

the

memory.

*

To

clear

the

contents,

press

&

J

or

(@

mJ

in

sequence.

READ-OUT

EXAMPLE

OPERATION

53+6=

59

53068

23-8=

15

2388)

56x2=112

56E2m)

99

fi

4)

210.75

567-7

4123)

+

(2K3)+(2%3)—(2X3I=19

7M

2933eBeo

we

-17-

eye

nT

ere

ts

Se

wee

Casio BF-100 User manual

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