Craig 4505 User Manual

WARANTV

Craig

Corporation

warrantstothe

pur-

chaser

of

this

new

Craig

Calculator

that

if

the

machineorany

part

thereofinthe

judgmentofCraig is

proventobe

defec-

tive in material

or

workmanship

within

one year

from

dateoforiginal purchase

such defects

willberepairedorreplaced

(at the

company's

option)

freeofcharge

for

partsand labor.

This

warranty

does

not

apply,to

any
productwhich has been damaged, 'by
accident

or

which

has been misu,sed,

altered,

or

repairedbyanyone

other

than Craig.
This

warrantyisin

lieuo(all

other

warranties expressedorimpl

ied; incllJd-

ing any

implied

warranty

of

.m~rchanta

bility,

andnopersonisauthorized,

to

assume

for

Craig

any

otherIiq

bility

iiJ

connection

with

the

saleofthis'prod'utt'.

To

obtain

repairs,

the

Calculator should

be

delivered, prepaid,toCraig Corpora-

tionateither

address

shown

below.'

In-warranty

units

willbereturned

post-

age

prepaid.

Craig

Corporation

921W.Artesia

Blvd.

Compton,

Calif.

90220

Craig

Corporation
50-52 Joseph Street
Moonachie,

N.J.07074

- Keep

Your

Sales

Slip

-

INTROOUCTION

Your

Crai~

4505

Electronic

Calculator repre-

sents

a significant engineering

achievement

resulting in full-size capability in a

compact
package. Major advances in miniaturized com­puter

circuits using single-chip

LSI

(Large

Scale

Integration) have provided a rugged

and

reliable

unit,

and

the

self-contained replaceable

batter-

ies

permit

convenient

use

without

need

for

AC

power.Anoptional

adapterisavailable

for

AC

operation.

This

adapter

will also charge nickel-

cadmium

batteries

which

can

be used in

place

of

regular flashlight batteries.

The

Craig

4505

will

perform

the

usual

addition

subtraction,

multiplication,

and

division

func~

tions

including chainormixed

calculations

with

automatic

constant

capability

for

repea~

add

and

subtract

as welt as

multiply

and

divide.

A separate accumulating

memory

greatly

increases

the

versatilityofthis

unit,

eliminating'

the

necessity for manual

notationofinter-

mediate

answersorpermitting

the

repeated
utilizationofa reference

number

during

an

extended

calculation.Anautomatic

decimal

function

facilitates

entryofdollar/cent

figures

without

useofthe

decimal

key,

and

direct

percentage

results maybeobtainedbyuse

of

the

special~key. Display indicators

denote

negative

result

(minus sign), overflow,

and

"memory-in-use,"

and

the

dOUble-acting clear

key allows

correctionofmistaken entries

with-

out

lossofprior

results.

It

is suggested

that

the

following

instructions

for

operation be read with

the

calculator

at

hand,

and

that

all calculation

examples

be

performedtoincrease

your

familiarity with

the

unit. A

short

outlineofoperating

procedures

is

also

printedonthe

backofthe

calculator

for

quick

reference.

PREPARATION FOR USE

Battery Power

Four

"AA"

penlite

batteries

are required.

Open

the

coverofthe

battery

compartmentonthe

bottomofthe

unit

and

insert

the

cellstomatch

the

polarityofthe+and

- signs indicated

inside

the

compartment.

(The

unit

will

not

operate

properly, and rechargeable cells

may

be

damaged, if

the

cells are incorrectly inserted.l

Replace

the

battery

compartment

cover. Slide

the

power

switchto"ON".

Standard

zinc-

carbon

cells will provideatleast 4

hours

operating time,

but

more

economical

battery

costs

will result

from

the

useofrechargeable

nickel-cadmium cells. Replace

or

recharge

the

batteries

when

all decimal

points

come

on

during

operation.

AC Power

The

calculator maybeoperated

from

any

120

voltAC50/50Hzoutlet

by using

the

Craig

9227

Adapter. Plug

the

adapter

into

a conven-

ient wall receptacle,

and

insert

the

small

connector

into

the

"DC

5V"

socketonthe

side

of

the

calculator.

Battery Recharge

The

batteries in

the

calculator

are automatically

connectedtoa recharging circuit whenever

the

AC

Adapterisin use, regardlessofthe

position

of

the

calculator

power

switch.

Nickel-cadmium cells may

be

left in

the

unit

at

all times. When all decimal

points

come

on,

the

batteries

snould

be rechargedbyleaving

the

unit

plugged

into

the

AC line overnight. A fully

discharged

battery

may

take

24

hours

to

recharge. Nickel-cadmium cells will

not

be

damagedbymoderate

over-charging. However,

if

the

unitistobeleft unused

for

more

than

a

few

days, itisdesirabletoeither

remove

the

cellsorunplug

the

power

cord.

Note:Itis

normal

for

rechargeable cells

to

lose

about1%of

their

charge

per

day.

An

overnight charge

shouldbegiven when

the

calculator has

not

been in use for

more

than

30

days.
Zinc-carbon

and

alkaline cells

cannotbeeffec-

tively recharged,

but

should

notbedamaged

by

normal

intermittentACoperationofthe

calcu-

lator.Itis

good

practicetoremove

the

cells

from

the

unit

when itisnottobe

used in

the

battery

mode

foranextended

time,toprevent

damage

from

possible leaking

battery

fluid.

Warning

Do

not

store

the

calculator in high-temperature

areas such

as

the

topofa

room

heaterorthe

rear package shelfofan

automobile

exposed

to

the

sun. Satisfactory

operation

should

be

obtained

over an

ambient

temperature

range

of

o

to

50C

(32to122FI,

and

relative

humidity

to

95%.Donot

immerseorallow liquidstofall

on

the

unit.

OPERATION

Power Switch

-

Turns

calculator

"ON"

.or

"OFF"

with

automatic

dearingofall registers.

AC

adapter

will charge nickel-cadmium batter-

ies in

either

position,

but

charging

timeisless

when

switch is

"OFF".

Memory Switch - Activates a separate

memory

registertoaccumulate

answersorstore

con-

stants.

The

indicator lamp above

the

switch will

illuminate whenever a

numberiscontained

in

the

memory.

Numbers are

enteredinthe

memory

only

when

the

switchis"ON"

and

the

Gor00

keyisdepressed. When a

number

has

been

storedinthe

memory,

the

switch

can

be

movedto"OFF"topreserve

that

number

without

accumulating additional answers.

Decimal Switch - Selects

numberofdecimal

positions in answer. When positioned as

re-

quired

by calculation.

"2"

and

"A2"

provide

fixed answer

with

automatic

round-offofaddi-

tional decimal digits. When

next

digitis0-4, last

displayed

digitisnot

changed,

but

when

the

next

digit is 5-9

the

last displayed digit

is

increasedby1.

For

example,

4.554-+4.55;

4.555

-+4.56. Round-off

occurs

only

when

EJ

keyisdepressed,

and

entries

canbemade

with

more

than

2 decimal places.

"A2"

position also

permits

entries

such

as

dollars/cents

with

automatic

positioning

of

entry

decimal

two

placestoleft

without

use

of

the

I::J

key

(common

"adding-machine"

model.

When desired,

the

G key

canbeused

to

override

the

automatic

placement

for

multi-

plication

and

divisionoradditionofa

third

decimal digit.

Constant -

This

calculator

has

fully-automatic

~

capabifityinalf

calculating

modes.

withnoneed

for

a separate

control

switch.

The

first

entry

{multiplicand}

for

multiplication.

or

the

second

entry

(divisor!

for

division,

is

available

without

re-entry

for

use

with

other

multipliersordividends.

The

last

entry

in

additionsorsubtractions

is also available

for

repeated

additionorsubtraction

without

re-

entry.

!9 Key -

First

stroke

{"clear

entry"}

clears display, and

working

reg-

isters

if

calculation

has been

completed.

Second

stroke

("clear

all"}

clears all registers (except

memory)

when a

calculationisstillinprogress.

A single

stroke

will

erase an

incorrect

entry

without

lossofpreviously-entered numbers

if

a

function

key

has

not

been depressed.

registers.

~

Key Recalls

contentsofmemory

reg-

istertodisplay.

without

loss

of

storage. Recalled

numberisequivalenttoa

new

entry,

and

may

be used

for

further

calculations.

[jfl

Key

- When used instead

ofEJto

completeamultiplication

or

division,

will

automatically

move answer deci-

mal

two

places

left,

and

also

conditions

regis-

ters

foradiscount

{G}

or

mark-up

{l±J}

operation,

For

example,

50

0 6

~;

read

3,

m;

read

53.

Percent answer is added

to

memory

register when

memory

switchis"ON".

\

Overflow -

if

entryofmore

than

eight

digits

is 1

attempted,

the

eight most-significant digits

will

be displayed

and

calculationofsums,ora

productorquotient,

exceeds

the

display capac-

ity

the

overflow

symbol

"["

will

appearatthe

left

sideofthe

display

with

the

eight

most-

significant

digits

shown. A single depression

of

the

[£]

key

will

remove

the

"["

symbol

and

permit

calculationstocontinue

with

the

dis-

played

number. Since

the

proper

decimal posi-

'tion has been

lostatoverflow,

manual reloca-

tion

will

be necessary.

Number

Entry

-

Touch

number

and

decimal

G keys one

atatime.

starting

with

the

left

digit

and progressingtothe

right.

For

example,

enter

635.24bydepressinginsequence

ffiJ,

@],

ffiI,

G,

!Il,

~.

When

the

decimal

switchisat

"A2"

theEJkey

maybeomitted

when

all

entries have

two

placestothe

right

of

the

decimal.

For

example,

3.00

would

be

entered

by

[ill, [ill,

[Q].

and

0.25

would

be

[]J , ffi].

I9ill

Key

Clears

the

separate

memory

reg-

ister,

but

does

not

affect

main

Multiplication

3 x 9 = 27;3 x

6.53=19.59;3x1.005=3.015

!fl, !fl,

3,0,9,G;read

27;6.53,

G ;

read 19.59;

1.005,

El, read

3.015.

If decimal

switch

isat"2",

last answer will be

3.02

becauseofautomatic

round·off

.

Subtraction

34.9-27.25-4.5~3.15

!fl.

19.

34.9,

Ill,

27.25,

El,

4.5, E1;

read

3.15.Ifthis

answer istobe

accumulated

in

the

memory

with

the

answertothe

previous

problem,

depress

EJ.

To

verify

the

accumula-

tion,depress

IMBJ,

read

57.96

(54.81 +

3.15).

Key -

Completesamultiplyordivide

.

operation,

and

adds

result

to

memory

register

(when

memory

switch

is

"ON").

Can also be usedtotransfer sums

to

memory,

but

does

not

completeanaddition

or

subtraction

operation

(3EJ2 [±],

not

3

EEl

2

EJ).

tB

Key-Entersa"divide"

command.

o Key -

Entersa"multiply"

command.

EI

'Key-

Subtracts

the

entered

number,

and

will

perform

repeat

subtrac-

tion

with

additional depressions. Also changes

sign

for

multiplying

and

dividing

with

negative

numbers. Depress

after

answer

(Ellorafter

first

entry

(a

G 0 b

G).

When depressed

.

after

second

entry,

EJ

will cancel 0

or

B

command.

III Key -

Adds

the

entered

number,

and

will

perform

repeat

addition

with additional depressions.

CALCULATION EXAMPLES

Division

~

2.8;

2775

= 5.4; 5.001

75=

1.0002

19,

19.

14,

ill,

5,

B ;read 2.8;

27,8

;

read

5.4;

5.001,

EL read

1.0002

(decimal

at

"AF").

Addition (Decimal switCh

at

"2"

for

automatic

2-decimal round-off)

2.501

+3 +3 +

46.:~04

~

54.805

(54.81)

[g,

I:9,

2.501,

[±].

3,

ill,

El,

46.304,

ill

;read

54.805,

El; read 54.81.

Note:Ifmemory

switchis"ON",

54.81 will

be

addedtomemory

register.

Mixed Calculations

6.5x(-4l

713=-2

[9,

[9.

6.5,

0,4,8,

B,

B.

13.

B;

read

-2.

Alternatively, rearrange terms:

4.

El

; @

.6.5,

@ ,

13,

EJ;

read-2.•

(3

+ 5

-2)74(9 - 7l =

0.75

(Use

memory

to

store

divisor

for

recall.)

©ill,

[9.

19,9, El,

7,

EJ,

0,4,

G·

[9,

3,

BJ

'

5,

G .2,El,

E8,~.8;

read 0.75.

Exponentsand Reciprocals

2

4

= 16;

1/2.5=0.4

[£:1.

[9,

2,

G,

E1,

EL

EJ,

read

16.

19,

19,2.5,

8,

EI,

EJ,

read

0.4

Percentage

12%of65=7.8;

27 ";'30"/0 =

90

tfl, 19,

65,

0,

12.

ffi];

read

7.8;

27.

E8

,~O.

~

; read

90.

Invoice Extension with Discount and Tax

(Memory

"ON",

Decimalat"2")

12at

2.25=27.00

19.

19,

12.

@,

2.25.

G;

read 27

6

at

4.50=27.00

6,

@,

4.50.

B;

read

27

2at3.19=6.38

2.

~].

3.19.

EI

;read

6.38

UseofStored Constant (Memory

"ON".
decimalat"2")
6 itemsat¥320

each =

$7.38

($1.00 =
¥260yen)
2 itemsat¥840

each =

$6.46

First,

store

260inmemory:

~,

19,

260,

El

.slide

memory

switch

"OFF".

[9 ,.6. 0

.320.

B,~.G.read 7.38.

[9 .

2.~.

840.

[±J.

[MBJ

• B ;read 6.46.

60.38

Less 15%

-9.06

51.32

Plus5%tax

2.57'

53.89

!MBI.

@,

15, 00;

read

9.06,

E1;

read

51.32

0.

5.

~;

read

2.57.

EJ

;read

53.89