Heath Heathkit ic-2009 User manual

Copyright

01973

Heatfi

Company

All

righ

ts

mscrvott

1

-

597-1259

Dear

Customer:

The

Heath

kit

electronic

product

you

have

purchased

Is

one

of

the

best

performing

electronic

products

In

the

world,

Here's

how

we

aim

to

keep

it

that

way:

Your

Heathkit

Warranty

During

your

first

90

days

of

ownership,

any

parts

which

we

find

are

defective,

either

in

materials

or

workmanship,

will

bo

replaced

or

repaired

free

of

charge.

And

we'll

pay

shipping

charges

To

get

Those

parts

to

you

—

anywhere

in

the

world.

If

we

determine

a

defective

part

has

caused

your

Heathkit

electronic

product

to

need

other

repair,

through

no

fault

of

yours,

we

will

service

It

free

—

et

tho

factory,

at

any

retail

Heathkit

Electronic

Center,

or

through

any

of

our

authorized

overseas

distributors.

This

protection

Is

exclusively

yours

as

th<j

original

purchaser.

Naturally,

It

doesn't

cover

damage

by

use

of

acid-core

solder,

incorrect

assembly,

misuse,

fire,

flood

or

acts

of

God.

But,

rt

does

insure

the

performance

of

your

Heathkit

electronic

product

anywhere

in

the

world

—

for

most

any

other

reason.

After-Warranty

Service

What

happens

after

warranty?

We

won't

let

you

down.

If

your

Heathkit

electronfc

product

needs

repairs

or

you

need

a

part,

just

write

or

call

the

factory,

your

nearest

retail

Heathkit

Electronic

Center,

or

any

Heath

authorised

overseas

distributor.

Wo

maintain

an

inventory

of

replacement

parts

for

each

Heathkit

model

at

most

locations

—

even

for

many

models

that

no

longer

appear

in

our

current

product

line-up.

Repair

service

and

technical

consultation

are

available

through

all

locations.

We

hope

you'll

never

need

our

repair

or

replacement

services,

but

it's

nice

to

know

you’re

protected

anyway

—

and

that

cheerful

help

is

nearby.

Sincerely,

HEATH

COMPANY

Benton

Hefbor,

Michigan

49022

Operation

Manual

for

the

MODEL

IC-2009

CALCULATOR

HEATH

COMPANY

BENTON

HARBOR,

MICHIGAN

4902

2

•

■

••••

•

«

•

••

•

Page

2

TABLE

OF

CONTENTS

INTRODUCTION.3

OPERATION.4

OPERATING

PROCEDURE.6

Chart

#1

Addition.7

Chart

#2

Subtraction

.7

Chart

#3

Multiplication

.8

Chart

#4

Division

.9

Chart

#5

Mixed

Calculations

in

Series.10

Chart

#6

Multiplying

by

a

Constant.

K.11

Chart

#7

Dividing

by

a

Constant,

K.12

Chart

#8

Raising

a

Number

to

a

Power

Using

the

Constant

Function,

K.13

Chart

#9

Calculating

Negative

Powers

of

Numbers

Using

the

Constant

Function,

K.14

Chart

#10

Using

the

CE

Key

to

Remove

Erroneous

Input.15

OPERATIVE

CONSIDERATIONS.16

TYPICAL

USES.17

REFERENCE

TABLES

.19

INTRODUCTION

This

Manual

explains

the

basic

operation

of

your

Calculator.

Take

a

few

minutes

to

read

the

features

and

procedures

so

you

will

become

familiar

with

your

unit.

You

can

quickly

and

accurately

add,

subtract,

multiply,

and

divide

in

an

easy

straightforward

way.

In

fact

you

may

soon

use

your

Catculator

for

problems

in

areas

you

did

not

originally

consider.

Common

examples

and

tables

are

provided

for

quick

reference

as

you

need

them.

DECIMAL

©

POINT

ENTRY

KEY

;;

.V:

s

/

.

:•!'

*

•

v::

r

\

,r

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.

i

9

*

.

/•

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AT

H

K

IT

Sin;

ON

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•*

••

•

/•

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■

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H

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•

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r-

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^

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<»

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•

.

A.

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•

V*

•

••

•

•\

.

N

%

# *»«

/

A

.1

•

Fsaupe

charger

PLUG

decimal

POINT

POWER

SWITCH

•

CLEAR

CE

EN

I

RV

KEY

•

\

%

C

CLEAR

KEY

•

MINUS-EQUALS

(TOTAL)

KEY

DIVISION

KEY

/

•

■

X

MULTIPLICATION

KEY

•

+

PLUS

EQUALS

(TOTAL)

KEY

16

•

N

...

15

14

13

12

11

10

9

8

OPERATION

This

section

of

the

Manual

details

each

function

of

the

Calculator.

Study

the

following

information

to

become

familiar

with

the

Calculator

and

its

operation.

OPERATING

FEATURES

Figure

1

points

out

the

operating

features

of

the

Calculator.

Each

feature

Is

described

below.

1.

8-DIG

IT

DISPLAY

—

Displays

the

numbers

entered

by

the

keyboard

or

the

result

of

a

calculation.

2.

NEGATIVE

NUMBER

INDICATOR

-

Center

segment

(-)

lights

to

indicate

a

negative

number.

ENTRY

OVERFLOW

—

Lights

{E)

when

the

8-digit

input

capacity

of

the

Calculator

has

been

exceeded.

The

display

shows

only

the

first

eight

digits

entered.

OUTPUT

OVERFLOW

—

Lights

(o)

when

the

result

of

a

calculation

exceeds

the

Calculator

8-digit

display

capacity.

The

display

shows

only

the

"most

significant"

numbers

cf

the

calculation.

See

the

"Overrange"

section

on

Page

16.

LOW

BATTERY

INDICATOR

—

Lights

(L)

when

the

battery

voltage

drops

to

a

level

where

further

calculations

(in

excess

of

fifteen

minutes)

may

no

longer

insure

accurate

results.

3.

BATTERY

SAVER

MODE

INDICATOR

-

Approximately

15

second!

after

the

last

entry

is

made

on

the

keyboard,

the

display,

except

for

th<

center

segment

of

the

center

digit

(—J,

will

disappear.

This

indicates

the

Calculator

has

gone

into

its

"battery

saver

mode"

to

conserve

the

battery

4.

(D)

DISPLAY

RECALL

KEY

—

Pressing

the

D

key,

while

the

Calculator

i:

in

the

battery

saver

mode,

wilt

cause

the

last

display

to

relight.

5.

(K)

CONSTANT

SWITCH

-

Slide

this

switch

upward

(t)

before

you

entei

a

number

that

will

be

used

as

a

constant

for

multiplication

or

division.

The

constant

(K)

is

the

number

and

function

(X

or

*r)

entered.

This

constant

*!!

remembered

by

the

Calculator

for

each

new

problem

unti)

the

CLEAR

|C.'

KEY

is

pressed.

The

switch

should

be

left

in

the

upward

position

until

the

end

of

calculations

that

no

longer

require

a

constant

6.

NUMBER

ENTRY

KEYS

—

Use

these

keys

to

enter

numbers

into

the

Calculator.

7.

(•)

DECIMAL

POINT

ENTRY

KEY

—

Press

this

key

to

enter

a

decima

point

in

the

number

being

entered

into

the

Calculator.

This

key

must

be

pressed

in

the

proper

sequence

with

the

number

keys

to

enter

the

decimal

point

at

the

proper

position.

8.

(+

=)

PLUS-EQUALS

(TOTAL)

KEY

—

This

key

performs

two

operations:

The

(+)

locks

in

a

positive

number

entry

and

the

(=)

gives

the

total

to

a

calculation.

Press

this

key

right

after

the

entry

of:

A.

A

positive

number

when

adding

or

subtracting.

B.

The

last

number

of

a

multiplication

problem

to

find

the

total,

C.

The

last

number

of

a

division

problem

to

find

the

total.

9.

(X)

MULTIPLICATION

KEY

—

Push

this

key

before

you

enters

number

to

be

multiplied

by

an

existing

number

in

the

Calculator,

10.

LH

DIVISION

KEY

—

Push

this

key

before

you

enter

a

number

to

be

divided

into

an

existing

number

in

the

Calculator,

11-

(-

MINUS-EQUALS

(TOTAL)

KEY

-

This

key

performs

two

operations:

The

{-)

locks

in

an

entry

as

a

negative

number

and

the

(-)

gives

the

total

to

a

calculation.

Press

this

key

right

after

the

entry

of:

A,

A

number

that

is

to

be

subtracted

from

an

existing

number

in

the

Calculator

This

also

gives

the

total

of

the

calculation.

••

•

•••

•

Page

5

B.

A

negative

number

to

be

used

in

a

multiplication

or

division

problem.

NOTE:

When

you

perform

a

subtraction

problem,

the

Calculator

actually

finds

the

difference

between

a

positive

and

negative

number

by

addition.

The

negative

number

can

be

entered

in

any

sequence

providing

the

(--}

key

is

pressed

right

after

the

number

is

entered

in

the

Calculator.

12.

(C)

CLEAR

KEY

—

Push

this

key

to

clear

ail

numbers

in

the

Calculator

and

reset

it

to

zero.

If

a

(K)

constant

is

being

used,

it

is

also

cleared.

13.

(CE)

CLEAR

ENTRY

KEY

—

Push

this

key

to

clear

any

number

shown

on

the

display.

This

key

will

not

affect

any

other

number

or

operation

previously

entered

into

the

Calculator.

The

(CE)

key

will

clear

an

incorrect

number

entry

so

that

the

correct

number

can

be

entered

without

disturbing

any

in

the

Calculator.

14.

POWER

SWITCH

—

Turns

the

Calculator

on

and

off.

15.

DECIMAL

POINT

—

Indicates

the

location

of

the

decimal

point

in

the

number

shown

in

the

display.

16.

CHARGER

PLUG

—

Connects

the

Charger

to

the

Calculator

to

charge

the

battery

when

the

Charger

is

connected

to

an

AC

outlet.

OPERATING

PROCEDURE

Charts

1

through

4,

which

follow,

illustrate

the

four

basic

functions

of

the

Calculator:

ADDITION,

SUBTRACTION,

MULTIPLICATION,

and

DIVISION.

Chart

5

shows

mixed

calculations;

Charts

6

and

7

show

multiplication

and

division

by

a

constant;

Charts

8

and

9

show

how

to

calculate

positive

and

negative

powers

of

numbers;

Chart

10

shows

the

use

of

the

(CE)

CLEAR

ENTRY.

Each

numbered

step

(line)

of

the

Charts

shows

which

input

and

function

keys

to

push,

and

what

the

readout

will

be.

In

the

"Display"

column,

the

light

lines

represent

all

the

segments

that

can

light

whereas

the

heavy

lines

indicate

the

segments

to

be

lighted

for

that

step.

Until

you

become

familiar

with

using

the

Calculator,

it

will

be

helpful

to

refer

tc

these

charts

from

time

to

time.

Connect

the

charger

into

an

appropriate

AC

power

source

and

connect

the

charger

cord

into

the

Calculator

The

Calculator

can

be

used

for

desk

top

operation

even

with

the

Charger

connected.

It

will

take

approximately

14

hours

(with

the

Calculator

turned

off)

before

the

batteries

are

completely

charged.

The

Calculator,

when

used

as

a

portable,

can

be

expected

to

operate

for

approximately

five

hours

when

starting

with

a

fully

charged

battery.

{No

warmup

time

is

required

to

use

the

Calculator.)

Before

you

begin

any

calculation,

always

push

the

(C)

CLEAR

key

to

clear

the

Calculator.

CHART

#1

-

ADDITION

ADD:

155.1

+

25.3

180.4

CHART

#2

-

SUBTRACTION

SUBTRACT:

108.48

48.22

60.26

STEP

FUNCTION

DISPLAY

CHART

#3

MULTIPLY:

1

c

DISPLAY

CHART

#4-

DIVISION

DIVIDE:

444H-4-111

STEP

INPUT

Page

9

CHART

#5

-

MIXED

CALCULATIONS

IN

SERIES

ADD,

SUBTRACT,

ADD,

MULTIPLY,

AND

DIVIDE

IN

SERIES:

{15

+

20-5

+

12)x8

STEP

INPUT

FUNCTION

Page

11

CHART

#6

-

MULTIPLYING

BY

A

CONSTANT,

K

WHERE

CONSTANT

K

-

3:

K

x

2

=

6

K

x

8

a

24

K

x

40

=

120

STEP

INPUT

FUNCTION

DISPLAY

*NOTE

THAT

FOR

MULTIPLICATION

THE

CONSTANT

IS

THE

FIRST

NUMBER

ENTERED

•

••

•

Page

14

CHART

#9

-

CALCULATING

NEGATIVE

POWERS

OF

NUMBERS

USING

THE

CONSTANT

FUNCTION,

K

|

CALCULATE:

THE

NEGATIVE

FOURTH

POWER

OF

2:

1

WHERE

CONSTANT

K-2:

1

2-4

=

_L-

----

=

1-^2+=*+=+=

=

.0625

2

4

2

x

2

x

2

x

2

•

|

STEP

INPUT

VuNCTION^j

display

CHART

#10

-

USING

THE

CE

KEY

TO

REMOVE

ERRONEOUS

INPUT

NUMBERS

MULTIPLY,

SUBTRACT,

AND

DIVIDE

IN

SERIES:

(6

x

10)

-21,

13

•

/

•

M

•

STEP

INPUT

FUNCTION

DISPLAY

CLEAR

DISPLAY

OPERATING

CONSIDERATIONS

OPERATING

TEMPERATURE

The

solid-state

devices

in

the

Calculator

are

designed

to

operate

normally

at

;emperatures

between

0

and

60

degrees

Centigrade

(32

to

120

degrees

-ahrenheit).

If

you

operate

the

Calculator

in

temperatures

outside

of

this

range,

/ou

may

encounter

inaccurate

operation,

NEGATIVE

NUMBERS

Negative

numbers

can

be

used

in

any

calculations.

To

establish

a

negative

lumber,

push

the

{—)

key

immediately

after

you

enter

the

number.

DECIMAL

PLACES

The

Calculator

has

a

floating

decimal

point.

It

is

necessary

to

push

the

DECIMAL

{*)

key

in

proper

sequence

to

enter

the

decimal

point

in

the

entry,

6843.6919

(+*0

7362.9587

1

4

206.65

06^-NOT

SHOWN

8-DIGIT

DISPLAY

Note

that

the

last

digit

shown

is

not

rounded

off

to

indicate

the

value

of

the

part

of

the

answer

which

is

beyond

the

readout

capacity

of

the

Calculator.

The

floating

DECIMAL

POINT

gives

only

the

most

significant

digit

(within

the

8'digit

capacity

of

the

Calculator}

to

the

right

of

the

decimal

point

as

shown*

Since

"5"

is

the

fast

significant

digit

in

the

answer

to

the

addition

above,

the

answer

displayed

would

be

14206.65,

A

characteristic

of

the

Calculator

is

that

any

fractional

number

is

always

preceded

by

0

(zero)

ora

whole

number.

Thischaracteristjc

limits

the

input

and

readout

capacity

of

the

Calculator

to

seven

digits

to

the

right

of

the

decimal

point.

The

Calculator,

however,

can

handle

up

to

14

places

In

multiplying

and

dividing

fractional

numbers.

OVERRANGE

The

overrange

indicator

at

the

left

end

of

the

display

will

tight

(Ef

when

the

whole-number

entered,

or

(

a

)

if

the

final

answer

in

a

calculation,

is

beyond

the

8-digit

capacity

of

the

Calculator.

In

an

overrange

condition,

the

part

of

the

answer

shown

will

be

correct,

but

the

decimal

point

will

be

eight

places

to

the

left

of

its

correct

location

and

the

part

of

the

answer

beyond

eight

digits

will

not

be

shown.

The

presence

of

the

(E)

does

not

prevent

further

calculations

although

it

would

hide

the

presence

of

a

minus

sign.

The

presence

of

the

(o)

does

prevent

further

entry

and

only

pressing

the

(C)

kev

will

restore

the

Calculator

for

further

calculations.

ENDING

A

CALCULATION

SUBTOTALING

When

you

have

completed

all

inputs

for

a

calculation,

push

the

(+=)

In

series

calculations,

the

(+=>

PLUS-EQUALS

key

and

{-=)

MINUS-EQUALS

PLUS-EQUALS

key,

or

the

(-=}

MINUS-EQUALS

key

if

the

last

entry

is

a

key

display

a

subtotal,

negative

number.

This

displays

the

answer.

It

is

then

necessary

to

push

the

{C}

CLEAR

key

to

clear

the

Calculator

before

you

enter

numbers

for

a

new

calculation.

TYPICAL

PERCENT

OF

A

NUMBER

Just

as

a

cent

is

one

one-hundredth

of

a

dollar,

one

percent

is

one

one-hundredth

of

a

unit.

Therefore

just

as

a

cent

(1

penny)

times

one

hundred

equals

one

dollar,

one

hundred

times

one

percent

equals

one

unit

(100%).

Divide

one

percent

by

one

hundred

and

the

result

is

the

decimal

equivalent.

Example:

1

(%)

4-100

=

0.01

A

4%

(.04)

sales

tax

on

a

five

dolfar

purchase

would

be

.04

times

the

purchase

price.

hxampie:

$5.00

x

.04

-

$0.20

sales

tax

The

total

amount

of

a

five

dollar

purchase,

including

the

tax

would

be

$5.00

x

1.04

(one

times

five

dollars

plus

.04

times

five

dollars).

THE

PERCENT

ONE

NUMBER

IS

OF

ANOTHER

NUMBER

A

$5.50

increase

on

a

$110

item.

Example:

5.50

4-110-

0.05

.05

x

100

-

5%

UNIT

COSTS

The

cents

per

pound

cost

of

an

item

sold

as

ten

pounds

for

$0.69

would

be

$.069

a

pound.

Example:

$

.69

4-10

"

$0,069

for

one

pound.

A

dozen

(12)

items

at

$0.60

would

be

$0.05

each.

Example:

$0.60

4-12-

$0.05

each.

A

car

travels

360

miles

and

requires

20

gallons

of

gas.

a

gallon

for

every

18

miles

or

$0.02

a

mite

at

$0.36

per

gallon.

Example:

$5.00

x

1.04

*

$5.20

total

amount

Example:

360

4-

20

“

18

miles

per

gallon

$0.36

4-18

=

$0.02

cost

per

mile

for

gas

Heath HEATHKIT IC-2009 User manual

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