Casio Memory-8R User manual

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ELECTRONIC

CALCULATOR

memory

INSTRUCTION

MANUAL

HGHCXiAim

isuAamr

V*

■

4^*'*“"

1+4

'Mi

(Y-811)

INTRODUCTION

Dear

customer.

Congratulations

on

your

purchase

of

this

pocketabje,

persona)

electronic

calculator

with

one

memory.

Although

extremely

compact,

it

carries

all

the

capabilities

you

could

require

for

daily

calculation

needs.8

digit

calculating

capacity,

automatic

accumulation

of

results

in

four

functions,

full

floating

decimal

system

with

underflow,

constants

for

x/-=-

f

true

credit

balance,

and

a

convenient

S

key

for

mark-up/discounts.

To

utilize

the

full

features

of

this

calculator,

no

special

training

is

required

but

we

suggest

you

take

a

few

minutes

with

this

instruction

manual

to

become

familiar

with

its

many

abilities.

POWER

SWITCH:

Move

the

switch

to

the

right

to

start

a

calculation.

READ-OUT

0

.

Shows

each

entry

and

result

through

an

8-digit

Digitrou

tube

panel.

Suppresses

unnecessary

0's

(zeroes).

NUMERAL/DECIMAL

POINT

KEYp]

~

j?]

,U

:

Enters

numerals.

For

decimal

places

use

the

key

in

its

logical

sequence.

FUNCTION

COMMAND

KEYS

0

,Q

&

0:

Press

the

numeral

and-

(unction

command

keys

in

the

same

logical

sequence

as

the

formula.

A

full

floating

decimal

and

underflow

system

work

in

ail

calculations

to

protect

significant

digits.

EQUAL

&

AUTOMATIC

ACCUMULATION

KEY

B:

Obtains

answer

and

automatically

accumulates

it

into

the

memory

positively.

PERCENT

KEY

S3

:

Performs

percentage

calculations,

including

mark-ups

and

discounts.

MEMORY

RECALL

KEY

S3

:

Recalls

contents

of

the

memory

without

clearing

the

same.

CLEAR

KEY

13

:

Clears

display

for

correction.

When

depressed

after

function

command,

it

clears

the

entire

machine

except

the

memory.

To

correct

the

function

commands,

depress

the

appropriate

function

key

(

Q

,0,

Qor

E

3

}

successively.

ALL

CLEAR

KEY

53

:

Clears

the

entire

machine

including

memory,

and

releases

an

overflow

check.

There

is

no

need

to

depress

the

53

or

fj3

key

prior

to

starting

each

new

calculation.

B/DISPOSABLE

DRY

BATTERY

OR

AC

OPERATION

The

calculator

operates

on

either

dry

batteries

or

AC

with

the

use

of

the

AC

ADAPTOR.

DRY

BATTERY

OPERATION

With

two

A

size

manganese

dry

batteries

(SUM-3)

it

operates

for

approximately9.5

hours

continuously.

Even

when

battery

power

decreases,

the

display

will

merely

darken

but

cause

no

miscalculation.

When

you

have

finished

your

calculation,

be

sure

to

switch

off

the

power

switch

to

save

battery

power.

To

change

batteries,

put

the

power

switch

off

first.

Slide

open

the

battery

cover

and

replace

batteries.

AC

OPERATION

(f

you

are

in

all

7V

area,

for

instance,

use

a

11.7V

AC

ADAPTOR.

When

you

use

an

AC

ADAPTOR

of

a

different

voltage,

it

may

cause

damage

to

both

the

AC

ADAPTOR

and

calculator.

Plug

the

applicable

AC

ADAPTOR

(100,

117,

220

or

240V)

into

the

AC

outlet

and

the

cord

into

the

calculator.

When

plugged

in,

battery

power

supply

stops

automatically,

so

battery

power

is

not

wasted.

To

prevent

the

damage

to

the

calculator,

USE

ONLY

THE

AC

ADAPTOR

recommended

by

your

dealer.

3/BASiC

OPERATIONAL.

EXAMPLES

EXAMPLE

OPERATION

READ-OUT

741

-

258

+

963

-1446

12

x

3.4

x

56

=2284.8

963

+25

“38.52

(123

+

654

-789)

x

2.5+5

=-300.3

741B258H963

12ES3E14Q56

123O6504B789B

205B5B

1446.

2284.8

~~38B2~

-SOOlT

-300.3

*

A

negative

figure

is

displayed

with

minus

{—)

sign

up

to

7

digits.

Note:

To

perform

a

problem

commencing

with

a

negative

figure,

operate

Q

B

ENTRY

in

sequence.

-10-20+45

=

15

-^/CALCULATION

WITH

A

CONSTANT

ENTRY

0

Q

(0

0)

ENTRY

B

♦

.

•

Obtains

product

(quotient)

ENTRY

'B

*

Obtains

product

(quotient)

---*-*-Number

entered

is

set

as

a

con-

•f

stant

multiplier

(divisor).

L

The

constant

is

released

when

a

normal

calculation

is

performed.

EXAMPLE

OPERATION

READ-OUT

m

314x123-

386.22

3.14

x456

—

1431.84

3.14

x

789

—2477.46

(K)

3652+275

=

13.28'

7854

+275

=28.56

9658

+275

=35.12

30140

□

123B

456B

3.14

386.22

1431.84

2477.46

275C

0

7854B

9658

275.

1328

28.56

35.12

5/SQUARE/POWER

G

RECIPROCALS

EXAMPLE

OPERATION

READ-OUT

2.5

2

—

625

2.5

3

—

15.625

2.5

4

-

39.0625

2050

El

B

6.25

15.625

39.0625

1

{2

+

3)

x

4.5

=0.0444444...

9876

123

+

456

=

17056994—

2030405

1

B

22.5

0.0444444

123045600

9876

B

_579

17.056994

6/MEMORY

CALCULATION

*

.

i

a)

Automatic

accumulation

(SENTRY

ENTRY

*

Obtains

answer

and

au¬

tomatically

accumulates

it

into

-

the

memory

'

positively.

*

Be

sure

to

depress

the

*

■

*

Recalls

the

accumulated

total

in

the

memory.

-*»-Clears

contents

of

the

memory.

key

prior

to

starting

a

memory

calculation.

EXAMPLE

OPERATION

READ-OUT

53

x

2

—106

+

1

2

6

x

3

.

4

=

-884

194.4

1256

+

32.5

=

1288.5

+)

147-25

-

122

1410.5

2353132B

260304

1256

147

MB

106.

88.4

194.4

1288.5

122

.

1410.5

Note:

To

accumulate

a

number

into

the

memory

negatively,

operate

as

follows.

78.5

x

14.7

-1153.95

0

45

X

2.5

-

112.5

1041.45

780501407E3

14513205B

1153.95

-

112.5

1041.45

b)

Direct

access

to

the

memory

Any

number

on

display

Is

directly

accumulated

into

the

memory

as

many

times

as

the

B

key

is

depressed.

8

+

8

+{6

+

5

}

+(6

+

5

)—

3

~

3

=

12.4

6H5

B3

B

Q

7/PERCENTAGE

CALCULATION

The

£3

key

works

with

both

multiplication

and

division.

Depressing

the

f[§

or

|3

key

after

finishing

percentage

multiplication

gives

a

mark¬

up

or

discount.

EXAMPLE

OPERATION

READ-OUT

[

290.

j

40.

20%

of

1450

.

290

145QQ20E3

Percentage

of

580

against

1450

.

40%

580S314502

*

A

constant

is

also

utilized

in

percentage

calculation.

20%

mark

up

of

1450

.

..

1740

1450E3

20213

20%

discount

of

1450

..

.

1160

14-500

202

D

1740.1

i

1160

.

O/OVERFLOW

Overflow

takes

place

when

an

answer,

whether

intermediate

or

final,

or

an

accumulated

total

in

the

memory

exceeds

8

digit

integers

{or

7

digits,

when

the

figure

is

negative.)

in

all

calculations

and

is

indicated

by

the

"EV

sign,

stopping

further

calculation.

To

release

the

locked

registers

caused

by

the

overflow

check,

depress

the

£3

key.

EXAMPLE

OPERATION

READ-OUT

123456-78

x

9876

—

1219259159.28

123456SJ78E3

98762

123456.78

E.

0

.

{To

start

a

new

calculation.)

2

S/PRACTICAL.

EXAMPLES

9-1

PRO-RATING

Division

Sales

amount

1

-.

..

.5

%

A

$

3,375

1

25

B

4,320

!

32

C

1.890

14

D

3.915

29

Total

$13,500

100

OPERATION

READ-OUT

33750

43200

189053

39150

0010

0

3375S

4320Q

1890S

3915

3375.

7695.

9585.

13500.

135.

25.

32.

14.

29.

100

.

9-2

INVOICING

Article

Q'ty

"

,J

-

'--

'

Unit

price

----—---

■

-

Discount

Amount

A

100

$18.95

5%

$1,800.25

B

200

9.95

3%

1,930.30

C

300

13.95

10%

3,766.50

Total

»

$7,497.05

.

—

.—

i

.

6%

sales

tax

449.823

Grand

total

OPERATION

READ-OUT

01000180950095

2000

90950097B

300013095009

S

180025

19303

3766.5

7497.05

449.823

7946.873

060

0

OPERATIONS:

Four

basic

functions,

chain

and

mixed

operation,

constants

for

x/-r,

automatic

accumulation

in

four

functions,

direct

access

to

the

memory,

percentage

calculation

including

mark-up/discounts,

square/powers,

reciprocals,

true

credit

balance

and

calculation

involving

decimal

places*

CAPACITY:

Entry/display.

.

8

digits

(7

digits

for

negatives)

Addition/subtraction.8

digits

{?

digits

for

negatives)

Multfplication/division.8

digits

(?

digits

for

negatives}

Accumulation

into

the

memory.8

digits

(7

digits

for

negatives)

OPERATING

SYSTEM:

8y

3

working

registers.

DECIMAL

POINT:

Full

floating

decimal

point

system

with

fool¬

proof

underflow.

NEGATIVE

NUMBER:

Indicated

by

minus

(—}

sign

on

the

left

of

the

figure.

OVERFLOW

CHECK:

indicated

by

the

“ET

sign,

locking

the

calculator.

READ-OUT:

Zero

suppression,

Multi-Digitron

tube

panel.

MAIN

COMPONENT:

One

chip

LSI

POWER

CONSUMPTION:

0.2w

POWER

SOURCE:

AC:

TOO,

117,

220

or

240V

it

10V),

50/60Hz,

with

applicable

AC

Adaptor.

DC:

Two

A

size

manganese

dry

batteries

(SUM-3)

operate

about

9.5

hours

continuously.

Two

AA

size

alkaline

dry

batteries

(AM-3)

operate

about

21

hours

continuously.

USABLE

TEMPERATURE:

32°F

-

104°F

(0°C

~

40°C)

DIMENSIONS:

23.8

mm

H

x

148

mm

W

x

72

mm

D

(FHx

5-7/8"Wx2-7/8"

D)

WEIGHT:

155

g

(5.5oz)

including

batteries.

CARE

OF

YOUR

MEW

ELECTRO¬

NIC

CALCULATOR

The

calculator

is

a

durable,

precision-made

instrument

which

wifi

provide

you

with

years

of

trouble-free

service.

To

help

ensure

this

we

recommend

that

the

inside

of

the

calculator

not

be

touched.

It

is

also

inadvisable

to

subject

the

calculator

to

hard

knocks,

drops,

and

unduly

strong

key

pressing.

Extreme

cold

(below

32°F

or

0°C),

heat

(about

104

<

’F

or

40°C)

and

humidity

may

also

effect

the

function

of

the

calculator.

When

you

do

not

use

the

calculator

for

a

long

period,

take

out

the

batteries

to

prevent

damage

if

the

batteries

leak.

Special

care

should

be

taken

not

to

leave

the

dead

batteries

inside

the

calculator.

Please

make

sure

you

switch

off

the

power

when

you

finish

your

calculations

or

intend

to

open

the

cover

to

change

batteries.

Should

the

calculator

need

service,

take

the

unit

to

the

store

where

purchased

or

to

a

nearby

dealer.

Casio memory-8R User manual

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