Sears 10m Instruction Manual

INTRODUCTION

Your Sears

Portable

Electronic

Calculatorislight

enough

and

small

enoughtobe

used in

one

hand

yetitprovidesastandard

keyboard

and a

light

emitting

diode

(LED)

display

that

is easily read at

homeorin

the

office.

The

ten

digit

display

and

the

full floating

decimal

allow

the

calculationofmost

problems

without

sacrificing

accuracy, and

the

time-out

feature

provides

longer

battery

life

between charges.

Your

calculator

has

the

abilitytosolve

engineering

or

bUdget problems,

with

such

featuresasa

switch-selectable

accumulativeorfUlly

accessible

memory,

square

root,

reciprocal,

percentage,

automatic

constant,

automatic

squaring,

and

change

sign.

The

calculator

operates

In

"algebraic'"

mode,

which

aflows you to

perform

chainormixed

calculationsinthe

orderinwhich

they

are

written.

The

reciprocal

and

change

sign

features

are

particularly

helpfUl In

solving

complex

problems. We

suggest

that

this

programmed

Instruction

Manualberead

with

the

calculator

in

hand.

Performing

the

operationsasyou read them

will

increase

your

familiarity

with them. For a

quick

reference, an

outlineofoperationsison

the

back

of

the

calculator.

ELECTRONIC

CACULATOR

GUARANTEE

We

guarantee

this

calculatortowork

properly, If i!

does

not,

simply

returnitto

our

nearest store and we

will:
During the first year, repair it,
free of charge,

(wherever you live in the United States)

SEARS, ROEBUCK AND CO.

OPERATiON:

Your

calculator

has rechargeable NiCd

batteries

included

in the unit. The following

procedure

should be followed for

AC.

and

battery operation:

AC

Operation:

Connect

the

Charger

unit to anystandard

120 Volt

electrical

outlet

and plug

the

connector

into the Calculator.

After

the

above connections, the

power

switch

may

be turned on and operation started.

(While

connectedtoAC, the

internal

batteries are

automatically

charged

whether

the

power

switchis"ON"or"OFF'".)

Battery Operation:

Disconnect the

Charger

cord

and turn

the

power

switch

"ON".

With normal use a full

battery

charge can be

expectedtosupply

about 5 hoursofworking lime.

NOTE: When the low battery

Indicator

(L) on the

display

is lighted,donot

continue

battery

operation. This

indicates

need

forabattery

charge.

Battery Charging:

Simply

follow

the same

procedure

as in AC

operation. The

calculator

may be used

during

the

charge

periodifdesired. In

order

to

fully

chargeabattery

which has been

completely

discharged, 7 hoursisrequired.

NOTE:

Although

no damage will result

from

prolonged

periods

with

the

Charger

connected, it is advisable to remove

the

Charger

cord

when the

Calculatorisnot

in

use

after

a full

recharge

cycle.

CAUTION:

To

avoid possible damage, use

only

the

charger

provided with the

calculator.

aKey

I;

Key

1m3

Key

mI

Key

III

Key

II

Key

m

-1iJ

Keys

"ON"

Switch

II

Key

II

Key

EI

Key

a

Key

II

Key

I!(

II

I[

Sem

lOrn

111[.

J

I:

III

If

~ITJ

m-:l\

II

i1m

ffi'j]

m

~

Bill

I

i8mmm~\\\

18~~w~11

~mmmm

wmDmB

~

.

--

--..=....-

2

CONTROLS AND INDICATORS

Turns CalculatorON &OFF.
Enters a

"subtract"

command
and performs any possible
preceding operation.

Enters a

"divide"

command
and performs any possible
preceding operation.

Enters a

"multiply"

command
and performs any possible
preceding operation.

Enters an

"add"

command
and performs any possible
preceding operation.

Completes previous operation
and retains appropriate

function

for

a constant

operation.
Changes the sign

of

the

contents

of

the display.
Enters a decimal point.
Enter

digitsofa number.

Adds the displayed number
to the Memory.

Subtracts the displayed
number from the Memory.

Displays memory content
without affecting the memory.

Clears memory without
altering

the

information on

the display.

0.333333333

Completesapercent
operation

and

conditions

a

markupordiscount

operation.

Automatically

appears

to the

rightofany

number

entered,

unless

insertedinanother
sequencebyuseofthe
Decimal key. With

fractional

numbers, it

willbepreceded

by

a zero, Le.

1/3

will

appear

as

Indicates

a negative

number

and

immediately

precedes

a
number.
Appears

as

Indicates

that

while

using the

calculator

the

keyboard

has

been inactive

for

apprOXi-

mately 30 seconds.

Appearsinthe

center

field

as

Warns

of

need

for

battery

charging.

II

Key

Decimal

Point

Indicator

Minus

Sign

Indicator

Memory

In Use

Indicates

that

data is

stored

Indicator

in

Memory

Register.

Appears

as

Low

Battery

Indicator

Time-Out

•

Indicator

When used

once:

(1)

During

number

entry,

clears

the

last

entry

and

recalls

the previous

entry

if

one

has been entered.

(2)

During

Time-Out,

recalls

and

displays

the

informationonthe

display

without

affecting

it.

(3)

During

overflow,

clears

the

overflow

indicator.

During

all

other

conditions

and

also when

touched

twice,

this

key

will

clear

calculator

completely

except

memory

register.
When on

::;

position,

the

results

providedbyusing

=,

vx.

~

& % keys are

accumulated

into

the

memory.
Displays

square

rootofthe

entered

numberorcompletes

the

preceding

operation

and

displays

square

rootofthe

result.
Displays

reciprocalofthe

entered

numberorcompletes

the

preceding

operation

and

displays

reciprocalofthe

result.

Switch

II

Key

iii

Key

4

5

Special Battery-Saver Feature

If

youdonot

actuate

the

keyboard

for

approx-

imately30seconds

while

performing

a

calculation,

the

display

will

turn

off

automatically,

leaving

only

the

"Time-Out

Indicator",

previously

described,

on.

This

feature

decreases

unnecessary

power

consumption,

and

extends

battery

life

between

charges.

The

displayed

information

canberecalledbytouching

the

!it

key

once,

The

informationorfunction

mode

Will

not

be

affected.

Overflow
indicator

Indicatesacalculation

result

that

contains

more

than

ten

digits.

Appears

as

Note;Anegative

result

of

more

than

ten

digits

can

indicate

overflow

as

,'\0

BATTERY

NOTES

1.

With normal useatroom temperature, a full
batterycharge can be'expected to supply about
5 hours

of

accumulated working time.

2.

The Calculator may be used while its battery is

charging.

3.

Batteriesthat have been neither used

nor

charged

for

as

longas2or3monthswill suffer substantial

loss

of

operating time through a tendencyto

self-discharge.

As

ageneral rule, batteries lose

about

1%

charge per day due to self-discharge,

atnormal temperatures.

4.

For optimum performance and long life;
a.

Alternate frequently between Battery and
ACpower.

b.

Operate atornearnormal room temperatures.

c.

Chargeassoonaspossible upon appearance
of

the Low-Battery indicator.

5.

Recharge time is 7 hours for a fUlly discharged
battery, with

the calculator off.

6.

The LOW-Battery indicator is designed toappear
as

soonasbatteryvoltagedropsto the lowest

value that

will supportoptimum performance

of
the Calculator.Shouldfurtherdischargeoccur,
through continued operations

or

self-discharge.

the Low-Battery indicator may fail

to

appear.
Do notcontinueto operate on batteries when
thiscondition is noted.

or

adamaged battery

may result.

7.Asageneral rule, if improper operation occurs.
first try the Calculator with its charger connected.
Ifoperation is then normal, this indicates the
batteriesare low.

8.

Do not store the unitin hightemperatureareas
such

as

thetopofradiatorsorthe rear deck

of
automobilesexposed to the sun. The Calculator
will operate satisfactorily over

an

ambient tem-

perature range of

O·

to

50°C (32°to122°F) and

relative humidity

to

95%.

6

7

INSTRUCTIONS

1.Toclear

(erase)

machine

completely

for

new

operation

A.

Touch

the III key

twice.

B.

Cleared

display

will

be:

2. To

enter

(writeanumber)

Example:

enter

123.45

A. First,

clearbytouching

III

twice

B. Then

touch

number

and

decimal

keys

for

123.45

oneata time.

Always

start

with

the

left

hand

digit

and

progress

from

lefttoright.

Display

will

then

be:

123.45

Note:1.Enterorobtain

answers-

whole

numbersupto

ten

digits:

1234567890,

2.

Enter

numbers

less than

one

up

to

nine

digitstorightofdecimal.

(zero

always

appearstoleft

of

decimalIfnumber

is less than

one.)

0.123456789

3. Enter

decimal

numberupto

ten

digits.

123.4567890

8

3.Toclear~nincorrect

entry

Example: 48 + 12 is

your

calculation

A. You have

already

entered

48

Display

is:

B. You

now

touch

the a key

The

display

is:

C. Then you

enter13by

mistake

The

display

is:

D. To

clear

13,

touch

the!!

key

once.

This erases

only

the

last

number

entered (i.e. 13) and

the

previous

entry

is

displayed.

Display

will

be:

E.

Then enter

'12'

Display

will

be:

12.

F.

Finally,

touch

theIIkey

for

answer

Display

will

be:

Note:

Use

PiS

duringorimmediately

after

entryofa

numbertoclear

display. Use

of

!IIkey

when

a

result is displayed without overflow

clears

the

display.

9

CALCULATIONS

1.

ADDITION

To calculate 16.39 + 9.83 +

16

= 42.22

Do

these

steps

display

will be

Note: When adding

or

subtracting figures
with a fixed decimal place, the
calculator

will

hold

that

decimal

place

(decimal alignment).

Touch

!!twice

Enter 16.39

16.39

3.

MULTIPLICATION

To calculate 29.32 x 56.5 = 1656.58

Do these steps

display

will be

Touch

II

Enter

9.83

Touch

II

Enter

16

subtotal

16.39

. 9.83

26.22

Touch!!

twice

Enter

29.32

Touch a

Enter

56.5

29.32

29.32

56.5

450.

6300.

6300.

1656.58

11

Answer

Answer

Touch

II

Touch

II

Enter 14

Touch

II

4.

DIVISION

To calculate 6300

-;-

14 = 450

Do

these steps

display

will

be

Touch

f!I

twice

Enter 6300

42.22

Enter

6

Enter

5

Touch

II

Answer

Touch.

subtotal

TouCh.

Touch

II

Answer

2. SUBTRACTION

To calculate

23

- 6 - 5 =

12

Do

these

steps

display

will be

Touch

~twice

Enter

23

29.95

29.95

179.95

179.95

1.4975

53.985

31.4475

.display

will

be

tax

Answer

30%

discount

Touch

II

Enter 5

Touch

II

Touch

II

Touch

II

6. PERCENTAGE

(a)

Add5%taxto$29.95

Do

these

steps

Touch

!iI

twice

Enter 29.95

(b)

Take

30%,6%,

and2%discounts

from
$179.95
Do

these

steps

display

will

be

Touch

P!lI

twice

Enter

179.95.

TOUCh.

\1

Enter 30

f.

Touch

II

Enter

6

TouCh.
Enter

5

Touch

II

Enter

8

Touch

II

Enter

20

Touch.
Enter

8

Touch

II

Answer

5.

MIXED ARITHMETIC

To

calculate

(9

+ 6 -

5)

x 8 _ 8 = _ 4

20

Do

these

steps

display

will

be

Touch

!iI

twice

Enter

9

12

13

Answer

Enter 3

Touch

II

Touch

II

Touch

II

Touch a

Touch

p:a

twice

Enter 6

Touch

II

(b) Multiplication 6 x 2 = 12

6x

5 = 30

6x12=72

Do

these

steps

display

will

be

7.

AUTOMATIC CONSTANT

(a)

Addition 6 + 3 + 3 + 3 = 15

Do these steps

display

will

be

Touch

l!I

twice

Enter 6

" Enter 2

12.6

54.6

7.5579

12t3JJ65

2.368142

118.4071

116.038958

2%

discount

subtotal

6%

discount

subtotal

Answer

Touch

II

Touch

II

Enter 2

Enter

6

Touch

II

TOuch.

Touch

II

Touch

II

Touch

II

Enter

30

Touch

II

Answer

(c) Mark

$42.upby

30%

Do these steps

Touch

!I

twice

Enter

42

Touch.

Answer

14

Enter 5
Touch

II

Answer

\ 67.

\ 23.

\ 23.

'.

12.

\ 11.

'.

12.

\ 90.

Touch a

Enter 6

17

8.

MEMORY

To

calculate

(15

x 6) - (12 + 11) = 67

Do these steps

display

will be

Touch

!I

twice

Enter

15

Touch

II

Touch

iI

Enter 12

Touch

II

Enter

11

Touch

II

Touch

&iii

"

Touch

rim

Answer

243.

456.

Answer

Answer

Enter 12

Touch

1'1

TOUCh.
Enter

6

Touch

II

Touch

1'1

(3')

Touch

•

(3')

Touch

..

(3

4

)

Touch

..

(3')

Answer

Touch

iii!

twice

Enter

3

Touch

1!1

twice

Enter

36

(c)

Division

36

-7- 6 = 6

456";" 6 = 76

Touch

II

Enter

456

Touch

II

Answer

(d)

Exponents 35= 243

Do

these

steps

display

will

be

0.05

" 218.94

" 6.5682

" 218.94

" 225.5082

" '24.

" 24.

" 28.75

" 30.96

" 1.29

" 5.75

display

will

be

Touch

a

Enter 5.75
Touch

II

Enter 24

'"

Touch a

Enter 1.29

•

Touch

II

Touch

am

subtotal

Touch

a

Enter 3
Touch

II

tax

Touch

II

Total

..

10. RECIPROCAL

1/20

= .05

Do these steps

Touch

!iltwice

Enter 20

Touch

113

Answer

19

$149.75

9.48

28.75

30.96

29,95

$218.94

6.57

$225.51

\ 12.

\

9.48

" 12.

\ 149.75

" 0.79

display

will be

NET AMOUNT

Touch

~

twice

Enter 5
Touch

II

Enter 29.95

5

$29.95

12

.79

5

5.75

24

1.29

18

Touch

a

Enter .79

Touch.

Touch

II

Enter 12

Enter

5

Sales Tax

3%

Total

QTY UNIT PRICE

9.

ACCUMULATING MEMORY (2;)

~

switch

to

left

position

Do these steps

TouchMtwice

Enter

4

12. CHANGE SIGN

4 x

(-

3)

= -

12

E 426.7629279

This

procedure

appliestoall operations:

Addition, subtraction,

multiplication,

and

division.
Use the

M key to

clear

the overflow

indicator. The

displayed

number

can then be
multipliedordividedbya subsequent entry,
but ten decimal places must be added to the
result. Operation

of

the Mkeythe second

time will

clear

the display.

E 1.25

13. OVERFLOW INTERPRETATION

The overflow symbol will

appear

when the

display

capacityofthe

calculator

is

exceeded. For example,

multiplication

of

$12,500,000 x 1,000 will give

the

following

"[:=" display.

The

'T': " indicates

"overflow"oran answer

of

more than 10 digits. The

digits

other

than

oare displayed.

To

obtain

the

correct

decimal location,

simply

record

the displayed

number

and move

the

decimal

point10places

to the right. The answer will be:

12,500,000,000.

L.10

places

..r-

Overflowofa negative

numberisdisplayed

in

a

similar

manner, with

the

result

preceded

by

the minus sign. In the caseofa negative

result

of

more than ten digits, where none

of

the

trailing

digits

are zeros, the overflow is

indicated

as

•

500.

125.

soo.

- 12.

Answer

Answer

Touch E

Touch

!is

twice

Enter

500

Touch

II

Enter 125

Touch

II

Enter

3

Touch

III

Touch

II

11. SQUARE ROOT

'1'500 +

125

= 25

20

21

Notes

on

your

special

calculation

22

•

Notes

on

your

special

calculation

SPECIFICATIONS

Notes

on

your

special calculation

24

Decimal

Point:

Capacity:

Functions:

Power:

Main Elements:

Supplementary
Elements:

Dimensions:

Weight:
Peripherals:

Printed in U,S.A,

Full floating

decimal

point

Addition, subtraction.

mulij·
plication, division, and
omni-constant; percent,
square root, reciprocal,
Memory, change

sign.

General add, subtract,
multiply,

divide

and

percentage. Chain

multipli-

cation and

division.

Constant

multiplication,

division, addition,

subtrac­tion, percentage, fractions,
reciprocals, square root,
change sign, Memory.

Battery operation -

NiCd

batteries

(3)5hour

opera-

tion, 7

hour

charge.

Large scale integrated

circuit
Bipolar

ICs, Transistors.

Diodes
Height1V4

", Width 3",

Depth

5%".

9 oz.

Vinyl Pouch, Instruction

Book.

STK No. 16601

A907·902/0