Craig 4508

Craig 4508
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OPERATION
INTRODUCTION
Your Craig 4508 Calculator represents a
significant engineering achievement resulting
in a full-size capability in a pocket-size
package. Advances In miniaturized computer
circuits using single-chip LSI (Large Scale
Integration), LED (Light Emitting Diode)
display technology, and a unique snap-action
keyboard have provided a fugged, reliable
unit, and the self-contained nickel-cadmium
rechargeable barteries permit convenient use
even when AC power is not available.
The 4508 performs addition, subtraction,
multiplication, division and percentage
including chain or mixed multiplication and
division, powers and reciprocals, and
utilization of a stored constant. It also has a
capability to mark up or discount a number
after the percentage is calculated. Ten digits
are provided for entry and readout with a full
floating decimal and a positive or negative
sign. Additional display indicators denote
Power On, Low Battery, Overflow Entry and
Answer Overflow. A "time-out" feature to
extend battery operating time causes the
display to blank out approximately 30
seconds after the last entry, without the loss
of a problem.
It is suggested that the following instructions
be read with the calculator at hand, and that
all examples be performed with the unit to
increase your familiarity. A short outline of
operating procedures is also printed on the
back of the calculator.
AC Operation:
Set the switch on the back of the Craig
9224 Adapter to the electrical outlet
vOltage. Le., 115 or 230 Volts. Plug the
Adapter into the outlet and the connector
into the Calculator. (Note that the
connector is keyed.) After these
connections, the power switch may be
turned on and operation started.
Battery Operation:
Disconnect the adapter cord and tum the
power switch "ON". With normal use a full
battery charge can be expected to supply
about 5 hours of working time.
NOTE: When the low battery indicator
(l) on the display is lighted, do not
continue battery operation. This
indicates need for a battery charge.
Use of the Calculator can be continued
during the charge cycle. Charging will
continue whether calculator is on or off.
Battery Charging:
Simply follow the same procedure as in AC
operation. The Calculator may be used
during the charge period if desired. In
order to fully charge a battery which has
been completely discharged, 7 hours is
required. In most cases, an overnight
charge should be adequate.
NOTE: Although no damage will result
from prolonged periods with the Adapter
connected, it is advisable to disconnect
when not in use after a full recharge
cycle.
CAUTION: To avoid possible damage. use
only the Adapter provided with the calculator.
13.
CONTROLS & INDICATORS
1.
Power Switch
Turns Calculator "ON" &
"OFF".
2.
Constant
(K) Switch
3~,--~RAIG
2 . --lli!~-~
=
..
"
1.
4.
5.
9.
7.
6.
11.
10.
-12.
3.
II Key
4.
II Key
II Key
6. 13 Key
5.
Slide switch with 2
positions; in the up
position, the 'K' operation
is in effect. Use of 'K'
allows a number to be
entered and retained as a
"constant" for series
multiplication or division.
Performs %. mark-up. and
discount operation.
Clears the Calculator and
the display of all numbers.
Clears the display of the
previous keyboard entry.
Enters a "multiply"
command.
7 • • Key
Enters a "divide" command.
8 • • Key
Adds the entered number,
or carries out a previously
entered "multiply" or
"divide" command.
8.
9.
III Key
Adds a minus sign to an
entry. Subtracts the
entered number or
completes a previously
entered "multiply" or
"divide" command.
3
10• • Key
11• • to. Keys
Enters a decimal point
Overflow of a negative
Enter digits of a number
(limit 10 digits).
number~
12.
Craig 9224 Adapter
13.
Adapter Connector
Power-0n
Indicator
Low Battery
Indicator
Appears at the center of the
display to show "time-out"
condition. Recall display by
pressing any key.
Indicates a calculation
result that contain more
than 10 digits. Overflow of
a positive number appears
Answer
Overflow
Indicator
as
Overflow of a negative
number~
Warns of a need for battery
charge during battery
operation.
APpea~
Minus Sign
Indicator
Decimal Point
Indicator
1:1
Activated by the
for operations with
negative numbers.
Appears 5
key
Automatically appears to
the right of any number
entered, unless inserted in
another sequence by use of
the Decimal key. With
fractional numbers, it will
be preceded by a zero.
Entry
Overflow
Indicates an entry of more
than 10 digits. Overflow of
a positive number appears
as
4
5
C. Then you enter 13 by mistake
The display is:
PRELIMINARY
lNSTRUCTIONS
1. To clear (erase)
A. Touch the
A mistake!
•
D. To clear 13, touch the Bakey
Display will be:
key
B. Cleared display will be:
E. Then enter '12'
Display will be:
2. To enter (write.a number)
Example: enter 123.45
F. Finally. touch the
Display will be:
A. First. clear by touchingll
B. Then touch number and decimal keys
for 123.45 one at a time. Always start
with the left hand digit and progress
from left to right.
Display will then be:
II key for answer
m
Note: Use
during, or immediately
after entry of a number.
123.45
3. To clear an Incorrect entry
Example: 48+ 12 is your calculation
A
You have already entered 48
Display is:
8. You now touch the
Display will be:
6
II key
7
CALCULATIONS
1. ADDITION
2. SUBTRACTION
Example #1: To calculate 16.39 + 9.83 =
Do these steps
display will be
•
a. Touchll
3.
16.39
b. Enter 16.39
III
16.39
d. Enter 9.83
9.83
c.
Touch
e. Touch
II
a
12.81
II
12.81
=
Enter 3.6
e. Touch
Answer
9.21
Example #2: To calculate 23 - 6 + 2..1 - 5 =
Do these steps
display will be
+ 8.3 + 4.1 =
display will be
a. TouChll
=
b. Enter 16
b. Enter 23
•
•
e. Tauchll
f.
33.3
g. TOUCh;;
h. Enter 4.1
II
d. Enter 6
e. Touch
Enter 8.3
i. Touch.
c. Touch
•
d. Enter 9
t.
b. Enter 12.81
d.
Touch
c. Touch
Touchll
c. Touch
26.22
Answer
Example #2.:
To calculate 16 + 9
Do these steps
•
=
Example #1: To calculate 12.81 - 3.6
00 these steps
display will be
II
Enter 2.1
19.1
g. TOUCh;;
h. Enter 5
Answer
8
37.4
i. TouCh.
Answer
9
14.1
Example #3:
To calculate 62 - 82 + 10 - 40:::::;
Do these steps
display will be
a. Touch
b. Enter 62
c. Touch
II
Example #2: To calculate 3 x 21 x 6.1 =
Do these steps
display will be
a. Touch
.i
b. Enter 3
c. Touch
f.
=
=
-
e. Touch
20.
1.
Enter 10
g. Touch
=
-
Answer
-
,
•
~
Example #1: To calculate 29.32 x 56.5 =
Do these steps
display will be
b. Enter 29.32
c. Enter 31
13
13
29.32
e. Enter 6
d. Enter 56.5
56.5
II
Answer
10
165658
x 6 ==
x 8.2 ==
x 7.6 =
display will be
b. Push 'K' on (up)
d. Touch
e. Touch
384.3
a. Touch
29.32
c. Touch
Answer
I
•
a Touch
=
Example #3: To calculate 31
Use of 'K' Switch
31
31
Do these steps
50.
3. MULTIPLICATION
II
Enter 6.1
g. Touch
10.
h. Enter 40
i. Touch
a
d. Enter 21
d. Enter 82
e. Touch
II
7:
f. Touch
=
1st Answer
g. Enter 82
11
186.
=
h. Touch
2nd Answer
254.2
i. Enter 7.6
j.
f.
III 3rd Answer
Touch
235.6
k. Push 'K' off (down)
27.
=
Enter 9
g. Touch
Answer
117+15=
Example #1: To calculate 376 -+- 53 =
Do these steps
display will be
II
display will be
Do these steps
a. TOUChll
b. Push 'K' on (up)
b. Enter 376
c. Touch
a
Example #3: To calculate 181 -+- 15:=
Use of 'K' switch
96 + 15 =
4. DIVISION
a. Touch
e. Touch
376.
II
376.
c. Enter 181
787.
d. Toucha
787.
d. Enter 53
e. Touch
=-
e. Enter 15
Answer
7.094339622
f.
Touch
II
Example #2: To calculate 81 -+- 3 -+- 9 =
Do these steps
display will be
g. Enter 96
a. Touch
h. Touch
b. Enter 81
i. Enter 117
c. TOuCha
j. Touch
d. Enter 3
1st Answer
=
2nd Answer
177.
11:1 3rd Answer
k. Push 'K' off (down)
12
72.06666666
13
5. PERCENTAGE
Example #1: To calculate 5% of 375
Do these steps
display will be
'Example #3: 10% discount, 5% sales tax:
on an item of $250.
Do these steps
display will be
a. Touchll
a. Enter 250
b. Touch
b. Enter 5
0.05
d. TouchEl
0.05
e. Enter 375
375.
Touch
III
II
250.
c. Enter 10
c. TouchE!
f.
250.
d. TouchE!
II 10%Discoun
Value After
Touch EI
e. Touch
225.
1.
225.
g. Enter 5
Answer
18.75
Example #2: Markup after adding 3% sales
tax on an item of $16.00
Do these steps
display will be
h. Touch
i.
II
11.25
Touch a:lFinal Amoun
to be Paid
236.25
3. Enter 16
b. TouChEi
Example #4: What % is 75 of 125?
Do these steps
display wi II be
c.
a. Enter 75
Enter 3
0.48
d. ToUChE!
b. Touch
a
125.
c. Enter 125
e. Touch _Final Amount
14
16.48
d. Touch
II
Answer
15
6. MIXED ARITHMETIC
g. Enter 8
Example #1: To calculate 23 x (-4) -0- (-6) =
Do these steps
display will be
h. Touch
a. Touch
i.
b. Enter 23
j. Touch
13
c. Touch
II
Touch II
-
92.
f.
-
92.
g. Enter 6
=:
h. Touch
To calculate
00 these steps
II
Example #3: 5% of (5
Do these steps
+
16) x 8
display will be
Answer
75.33333333
(9 - 5) x 8
20
II
b. Touch
c. Enter 16
8=
III
d. Touch
a
display will be
e. Touch
f. Enter 8
b. Enter 9
II
g. Touch
III
168.
h. Touch
EI
168.
d. Enter 5
i. Enter 3.5
e. Touch
Enter
Answer
a. Enter 5
Example #2:
f.
III
l. TOUCh_
e. Touch
c. Touch
Enter 20
k. Enter 8
d. Enter 4
a Touch
a
II
j. Touch
II
Answer
6.88
7. EXPONENTS
e. Enter 3
Example #1: To calculate (3)5 "'"
Do these steps
display will be
1. Touch
a. Touch
g. Touch
II
h. Touch
b. Push 'K' on (up)
i. Touch
C.
Enter 3
d. Touch
0.181818181
9. ANSWER OVERFLOW
g. Touch=
i.
II
III
EI
Touch"
h. Touch
•
5.5
j. Push uK" off (down)
e. TOUCh-=
t.
II
III
243.
Answer
The positive or negative overflow indicator
indicated by r or C respectively, will appear
when the display capacity of the calculator is
exceeded.
For example, multiplication of two positive
numbers
12345678 X 345678
will give the following display
Push 'K' off (down)
"426.7629279
8. RECIPROCALS
1
Example ;1: To calculate 2.5 + 3display will be
Do these steps
3. TOUChli
b, Push "K" on (up)
II
to the right. The proper answer will then be:
±4,267,629,279,OOO.
L 10 places j
c. Enter 2.5
d. Touch
The "r "or "e: .. symbol indicates positive or
negative "overflow" respectively, and
indicates an answer of more than 10 digits
shown. To obtain the correct decimal location
for either case, simply record the displayed
number and move the decimal point 10 places
18
19
This procedure applies to all operations;
multiplication, division, addition, subtraction
and percentage. Use the 'C' key to clear the
display.
10. RECALL AFTER 'TIME-OUT'
During battery operation, the display will
automatically turn off, if there is no keyboard
activity for about 30 seconds. This feature is
provided to conserve the battery power.
Depress any key on the keyboard to recall
the 'blanked' display.
WARRANTY
Craig Corporation warrants 10 the purchaser of this
new Craig Calculator that if the machine or any
part thereof in the judgment of Craig is proven to be
defective in material or worttmanship within one year
Irom date 01 original purchase such defects will be
repaired or replaced (at the company's option) free
of charge for parts and labor.
This warranty d~ not apply to any product which
1'18$ been damaged by accident or which has been
misused. altered. ~ repaired by anyone other than
Craig.
This warranty is in lieu of all other warranties
expressed or implied. including any implied warranty
of merchantability, and no person is authorized to
assume for Craig any other liability in connection
with the sale or this product.
To obtain repairs, the Calculator should be
delivered, prepaid to Craig Corporation at any
address shown below. In warranty units will be
returned postage prepaid.
Craig Corporation
Craig Corporation
921 W. Artesia Blvd.
1450 Greenleaf Avenue
Compton, Calif. 90220
Elk Grove Villago, III. 60007
Craig Corporation
Craig Corporation
50-52 Joseph Street
540 S. Front Street
Moonachie. N.J. 07074 Seallle, Washington 98108
Craig Corporation
3178 Oakcliff Industrial St.
Atlanta, Ga. 30340
- Keep Your Sales Slip-
20
BATTERY NOTES
1. With nonnal use at room temperature. a full
battery charge can be expected to supply about
5 hOurs of accumulated working time.
2. The Calculator may be used while its battery is
charging.
3. Batteries that have been neither used nor charged
foras long as 20r 3 months will suffer substantial
loss of operating time through a tendency to
self-discharge. As a general rule. batteries lose
about ~% charge per day due to self-discharge.
at nonnal temperatures.
4. For optimum perfonnance and long life:
a Alternate frequently between Battery and
ACpower.
b. Operate at or near nonnal room temperatures.
c. Charge as soon as possible upon appearance
of the Low-Battery indicator.
5. Recharge time is 7 hours for a fully discharged
battery.
6. The Low-Battery indicator is designed to appear
as soon as battery voltage drops to the lowest
value that will support optimum perfonnance of
theCalculator. Should further discharge occur.
through continued operations or self-discharge.
the Low-Battery indicator may fail to appear.
Do not continue to operate on batteries when
this condition is noted. or a damaged battery
may result.
7. As a general rUle, if improper operation occurs,
first try the Calculator with its Adapter
connected. II operation is then normal, this
indicates the batteries are low.
8. Do not store the unit in high temperature areas
such as the top of radiators or the rear deck of
automobiles exposed to the sun. The Calculator
will operale satisfactorily over an ambient temperature range of 0 to SOC (32 to 122F) and
relative humidity to 95%.
Printed in U.S.A.
A90l-C123
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