Lloyd's Accumatic 419 User manual

INTRODUCTION
Congratulations on the purchase of your
new LLOYD'S Accumatic™419 Elect-
ronic Calculator. You
can be assured of
years of enjoyable, trouble-free service
if you use it as outlined in these pages.
This calculator
is one of awide ranging
line
of personal electronic products that
LLOYD'S has to offer; personal,
because all LLOYD'S products are
designed
to meet your needs for high
quality performance
and dependability
at areasonable price.
If you already
own aLLOYD's Stereo, Cassette
Re-
corder, Portable Radio or Digital Clock
Radio,
you know what we maen.
LLOYD'S enjoys
an excellent reputa-
tion as
the manufacturer of avariety of
Home Entertainment Systems.
Now
that you have purchased one of
the LLOYD'S line of calculators, you
may be interested in knowing that all
LLOYD'S calculators employ
the most
advanced microelectronic technology
available
to date. Modern technology
has made it possible
to miniaturize most
of the electronic circuitry in your
calculator so that it fits on achip of
silicon' which can pass through the eye
of aneedle! No wonder we can make a
calculator which fits in apocket!
Why
not take afew minutes to read this
manual for
the full story on the
far-reaching capabilities of your new
microelectronic calculator.

BEFORE OPERATING YOUR CALCULATOR
Your Catcuiator operates from fOUf AA penlight batteries.
carbon zinc. alk.aline or nickel cadmium. Although they have
ahigher initial cost, alkaline batteries and rechargeable
batteries wilt give you the- best mreraU value. It can also be
operated using LLOYO'S AC Adaptor Model YA-7247
{120V/60Hz) or Model YA-7585 (220V/50Hzl.
CAUTION: The battocies $Upplied with this unit ~re not reehargaabte.
To avoid possible damage to unit~ these batteries should be removed
when using LLOYD'S AC Adaptor VA·'1247 (120V/60Hz) or VA·7585
(220Vl50Hzl.
HOW
TO CHANGE BATTERIES
To change batteries. mak.-e sure the power switth is in the "OFF"
position. Remove the battery access tover from the back of the
calculator bV sliding it toward the bottom of the calculator. Remove
and discard the old batteries.
When inSi!rting new baUeries, observe the battery polarity. Th.e (+)
pole of each battery must correspond wilh the (...,) indication in the
battery compartment. Damage
to the calculator can be caused by
incorrect placement of the batteries,
Adimly lighted display is an indication that the battery voltage is
low. This is the time fa replace tbe batteries with f'esh ones fit
rechargeabies are being ~sed, recharging is required). If the batteries
become tOO low, the calculator witt become inoperative.
HOW TO USE THE AC AOAPTOR
Ynur calculator may also be operated from At with the use of
LLOYO'S AC Adaptor Mode' YA-7247 020Vf60Hz) or Model
YA·1585 1220VfSOHzl. If the -calculator is being used on AC only
over long periods. of time, the batteries should
be removed to prevent
possible damage from battery leak.age. The AC Adaptor wifl also
charge rechargeable alkaline and nickel cadmium (Nicadl batteries,
CAUTION, To avoid damage. use only LLOYO'S Model YA-7247
1120V/60Hz) or Model YA-7585 (220v/50Hz) AG Adaptors with
your cah:ulators.
To conMet the adaptor, follow these four steps in the order
outlined:
1. Mai<.e- sure lhat the power switch is in the "OFF" position.
2. Connect the adaptor plug into the calcultor socket.
3. Plug the adaptor into the pamr outlet.
4. Mcve the calculator power switch to the "ON" position,
NOTE: When the AC Adaptor is used onl"l to rer.har98 Nicad or
rechargeable alkaline batteries, it
is not oecessary to turn the
calculator switch to "ON".
CAUTION; When the calculator is not in use, disc9nnec! the AC
Adaptor trom the AC outlet afld fram the calculator. Leaving the AC
Adaptor plugged into the calculator without AC power connected
wm drain the batteries.
KEYBOARO ORGANIZATION
The follOWing is abrief expJantion of the funelior of each key and
indicator found on the keyboard of the Atcum~tic TM 419.
DIGIT ENTRY KEYS
lQJ IhroughlID: Pressing one of these keys wilt enter that digit into the
rightmost display position. PreviousiV entered digits will be shifted
one positionto the left.
DECIMAL POINT ENTRY KEY
8: Depression of this. keV will correctlv position the decimal pDint in
your entries.

ARITHMETIC FUNCTION KEYS
8. EL 0. [): Oepresston of anyone of theSe keys telts the
calculator what operation to perform with the next numtwr entered.
During calculations.. intermediate results are also displaved when these
k~s are de:pres.'I!:d.
EQUAL KEY
E]: when the Bkey is depressed. the answer wit! appear on thi!-
display.
PERCENT KEY
~: Oeprnssion ot this key causes the flumber on the display to be
exDres:sed as aoercentaoe.
CHANGE SIGN KEY
l!B:Depression of this key changes the sign of the. displayed number.
To enter anegative number, enter the nomber first, then depress this
\t~v.
CLEAR AND CLEAR ENTRY KEYS
1Q.f0: Dp-pression of the dear [g key performs the following
functions:
1. Resets the overflow condition.
2. Clears
alt registers of the calcultor and places alero in the
rightmost pDsition.
Depression of the clear entr)'~key tlear£ the display register in case
a nlimbe< is entered bV mistake. It has no aHect on other storage
registers or any arithmetic operation which may be £eC
NOTE: The E2 must be depressed belore starting anew calC!JlatJon
if the last calculation was not concluded by depressing the El od~
keys.
MEMORY OPERATION
Depression of the foUowing keys perform the various memory
operations.
1.!iG3 ,Adds the contents 01 the display (Xl register to the
c.ontents of the memorY. lhf!; display (X} resister. .and all previous
operations are unaffected by this operation.
2. ~ :Subtracts the contents of the (Xl resister from the can·
tents of memory. The (X) resister and ali previous operation are
unaffected by this operation.
3. 'Mt1 :Clears the memory (sets memory contents to zero) without
disturbing other calculator modes or resisters.
4. rMBJ : Recalls the contents of memory to the display without
clearing the memory.
·MEMORY INDICATOR
This indicator is a dOl which will Jight in the. leftmost display position
whenever memory contents are non·zero.
NEGATIVE NUMBER INDICATOR
This indicator is located in the leftmost display position and tights
whenver ne{Jative numbers or credit balances are displayed.
OVERFLOW {ERROR! INDICATOR
This indicator is rocated in the leftmost display position. Any anWJer
or subtotal exceeding e.ight digits to the left of the decimal point,
overflow indicator ~T." lights and eight most significant digits are
displaved.The position of the decimal point in the overflowed display
tells you how many digits are overflowed.
For example. il the overflowed display reads C 1234.5678, thedecimal
point indicates fOUf overflowed (couhting from the left). The actual
...... is 123456780000.

Two successive depression of the clear ~ key will reset the- calculator
and only azero, in the. rightmo-st po-sit ion. will appear on the display.
MACHINE CAPACITY
1. The CapacitY 01 the machine is 0.0000001 to 99.999.999 (10" to
10' ·1l.
2. The calculator displavs whole numbers up to eight digits.
3. The calculator displays decimal numbers up to eight digits. For
decimal answers exceeding eight digits, the least significant
decimal digits are automatically suppressed
to prevent overflow.
4. The calculator displays numbers less than 1up
to seven digits. A
zero always appears: to the left of the decimal point if the number
is less than nne.
SUBTRACTION
Example: 6 - 2=4
ENTRY DISPLAY
6 6
EJ 6
2 2
EI 4
NEGATIVE BALANCE
Example: 4 - 9 -5
4 4
EJ 4
9 9
EI -5
COMMENTS
Sets Subtract Mode
Sets Su btl itt Mode
Negative Indicator lights
Result 3-7
Negative Indicator lights
Negative Indicator .Goes: Out
SPt~ Subtract Mode
8
4
8
EJ
MtXED ADDITION. SUBTRACTION
Example: 3 - 7 +8 '" 4
3 3
EJ 3
7 7
o -4
EXAMPLE PROBLEMS
The foUowiny exampte problems show you how easy it is to lise the
Accumatic TM419 Calculator.
The i:afculator should be turned on using the power switch. When
the calculator is 'On', azero will appear in the rightmost display
position. You are now ready to begin.
ADDITION
Example: 5 • 3 =8
ENTRY OtSPLA Y
5 5
GJ 5
3 3
o8
COMMElIlTS
Sets Add Mode
MULTIPLICATION
Example: 5.2 x 6.3 =32.76
5.2 5.2
o 5.2'
6.3 6.3
EI 32.76
Sets Multiplv Mode
Multiply Mode is still set tor Auto--
Constant

COMMENTS
Sets Multiply Mode
Sets Divide Mode
No Need to Key-ln leading Ze,o
Sets MultiplV Mode
2' .
2'
2'
AUTOMATIC DISCOUNT
e.-mple: A$15.25 Item Discounted 2lJ%
ENTRY DISPLAY COMMENTS
15.25 15.25
o15.25
20 20
I'l;l 3.05 20% 01 15.25
El 12.20
COMBINED MARK·UP, DISCOUNT
Example: A$31.25
Item Oiscounled20% Plus 5% Tax
31.25 31.25
o31.25
20 20
®6.25 20% 01 31.25
G 25 DiscDunted Price
Ii<l 25
5 5
®1.25 5% of 25
El 26.25
POWERS
Example: 2'· 16
2 2
o2
B4
EJ 8
B 16
PERCENTAGE
Example: 5% 0130· 1.5
30 30
o30
5 5
~ 1.5
AUTOMATIC
MARK-UP
Example: A$47.25 Purchase Plus 4% Tax
47.25 47.25
o47.25
4 4
I!!I 1.89 4% 01 47.25
El 49.14
DIVISION
ENTRY DISPLAY
Example: 12.4 +0.4 • 31
12.4 12.4
ill .l2.4
.'1. 0.4
EJ 31
MIXED MULTIPLICATION, DIVISION
Example: 8 x 6 +12 • 4
8 8
o8Sels Multiply Mode
6 6
lB 48 Result 8 x 6
12 t2
EJ 4

-----------
CONSTANT OPERATIONS
MULTIPLICATION
Example: 4x 3= 12. h5=20
4 4
@ 4 Sets Multiply Mode
3 3
EI 12 Sets AutO-Constant
5 5
EI 20
Sets Divide Mode
2+ 2
2T
20 2
2T202+2
Sets Multiplv Mode
4x4
4 x 4 x 4
4x4x4x4
COMMENTS
2+2+2=0.25
2
2
1
0.5
0.25
MULTIPLICATION
Example: 4x 4x 4x 4= 256
ENTRy DISPLAY
4 4
@4
EJ 16
El 64
EJ 256
DIVISION
Example: 2.;,
2
8
EI
EJ
EI
COMMENTS
18-3
18 -3- 3
18 - 3 - 3- 3
20+ 4
20+4+4
20+4+4+4
Sets Subtra<t Mode
Sets Add Mode
RECIPROCAL
Example:
114 ~ 0.25
ENTRY DISPLAY
4 4
G4
EJ 1
EJ 0.25
REPEATED OPERATIONS
ADDITION
Example: 20+ 4+ 4+ 4=32
20 20
B 20
4 4
EJ 24
El 28
EJ 32
SUBTRACTION
Example: 18-3-3-3=9
18 18
EJ 18
3 3
EJ 15
EJ 12
EJ 9

MEMORY OPERATION
This example is used to illustrate the various memory features:. You
buy 5of (tern A for $.25 each and 6of Item B for $.15 each. You
return for credit 2 of Item C at $J5 each.
ENTRY DiSPLAY COMMENTS
CHANGE SIGN
Example: st" (-31 '" -5
"
ENTRY DISPLAY
DIVISION
Example: 6+ 2. 3,8-;- 2· 4
ENTRY OtSPLA YCOMMENTS
6 6
IB 6 Sets Divide Mode
2 2
l!J 3 Sets Auto·Constant
8 8
EJ 4
CHAIN OPERATIONS
Example: (6" 4) 52 - 8 ", 2.4
6 6 •
@6
4 4
10 6+4
2 2
El 20 (6 +4)2
8 8
ill 2IS. 4} 2-8
5 5
a 2.4 Result
5
IEl
El
~
3
f£B
B
15
EI
5
181
.25
fiHl
6
181
.75
I!\ffi
6
5
25
25
3
-3
-75
15
-5
5
5
0.25
1.25
6
6
0.75
4.5
COMMENTS
5'
5' x(-31
Negative Indicator Goes Out
Negative (ndicatnr Ughts
Cost 01 ftem A (Memory Inditator
lights}
Cost of Item Br Adds Cost of Item
B to Item A in Memory l

ENTRY
2
@
.15
m:J
IQ
ENTRY
Example:
5
f!J
4
~
3
EJ
DISPLAY
2
2
0.15
0.3
5.45
5.45
o
CORRECTION
5+3085
5
4
o
3
8
COMMENTS
Credit 10f Item C(Subtracts Item
C lrom A&B in Memory)
Total Sale.
Clears Memory, Memory Indicator
Goes Out.1
Should Have Been 3.
OVERFLOW AND ERROR INDtCATIONS
Whene~er 'the capacity of the machine is exceeded or an impossible
calculation is attempted the error indicatar in the Hftmost display
po~tion will light.
The error conditions relevant are:
[email protected]].§.tt! where the ma!P'itude of the result is
greater than 99.999,999.
2. Depressing M±I or 1M3 "Nhere the magnitude of the result in
memory is greater than 99.999,999.
3. Division by zero.
RECOVERY TECHNIQUES
Occasionally during elaculations, an undesired arithmetic function key
milY he depressed. UtiHzing theS2 simple recovery techniques makes it
unnecessary to
begm the calcutarions again.
For example, if the E1 or El keys are inadvertently depressed, simply
enter a O. depress. the intended arithmetic function ilnd continue with
the calculation.
It the B or ill keys.are inadvertently depressed.
simply enter a 1. depress the intended function key and continue
with the calculation.

PRODUCT WARRANTY
LLOYO'S Electronics warrants its products to- be free from defects to
materials and workmanship under normal use .and service for the
following period:
PARTS 1 YEAR LABOR 98 DAYS
This- warranty begins with the date of purchase and applies to the
original owner only. Within the specified period LLOYD'S will fepair
or feplace any part Is) which we deem defective through normal use,
at no charge eXi:ept for afactory t)rocessiog tee of $1.75,
All products must be returned to the appropriate LlOYO'S FactDry
ServiCf! Department ftlr Warrall tv Service.
IMPORTANT: To obtain Warranty Service on any product, you
must present acopy of the Bill of Sale as proof of valid guarantee. :f
the merchandise is to be mailed to us, be cenain to include the Bill
al Sale along with your chetk or mon~y -order for the processing fee.
Any al1erahQns. abuse. misuse. battery corrosion or ~ccidental
ltamage voids \his guarantee.
Anv repairs made by other than a LLOYO'S Factory Service Center
are not co.vered by our wau:anty.
This guarantee is in lieu of all other guarantees. eilher expressed or
imphed and is valid only in the Continental U.S., Alaska, Hawaii and
Canada.
Beyond the warranty period sefVice. may be obtained at the Factory
Service Centers at reasonable rates.
LLOYD'S Electronics of Calif. Inc.
18601 South Susana
Road
Compton, California 90221
LLOYD'S Electronics ltd.
11 Plymouth Str .. t
Winnipeg, 21 Manitoba R2X 2V5
LLOYD'S Electronics ltd.
4445 Garrand Stml
Wille St. laurent, Montreal, (luebec, Canada
LLOYD'S Electronics LId.
857 York Mills Road
Don Mills, Toronto, Ontario, Canada
P
nnted in Japan

DIRECT ACCESS MEMORY
To improve the usefulness ofvour calculator a "Direct Access
Memory" is provided.
The 1M +1 and 1M Ikeys may be used to complete addition,
subtraction, multiplication and division operations while simulta-
neously adding
or subtracting the result to the memory.
The example given under "MEMORY OPERATION" of your
manual
illustrate this step saving feature.