LLOYDS Accumatic 20 Manual 

new LLOYD'S Accumatic™ 20 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 a wide 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 a reasonable price. If you already own a LLOYD'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 a variety 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 a chip of silicon which can pass through the eye of a needle! No wonder we can make a calculator which fits in a pocket! Why not take a few minutes to read this manual for the full story on the far-reaching capabilities of your new microelectronic calculator.

four AA penlight batteries, either Carbon-Zinc, Atkaline orNickelCadmium.AHhough they have a higher initial cost, Alkaline batteries and Rec.hargeable batteries will giv£ you the. best overall value. The calculator can also be operated using LlOYO'S AC Adaptor Model YA·7247 (120Vf60H,1 or Model YA·7565 mOVf50 Hll. CAUTION: The batteril1S supplied with this unit are not reehargeable. To avoid possible

calculator what operation to perform with the next number entered. During calculations, intermediate results are also displayed when these keys are depressed. EQUAL KEY §: when the El key is depressed, the answer will appear on the display. PERCENT KEY IPS: DepressiDn of this key causes the number un the display to be expressed as a percentage. CHANGE SIGN KEY El'3:0epressiDn of this key changes the sign of the displayed number. To entet a negative number, enter the number first, then depress this key. REGISTER EXCHANGE KEY ~;Oepfession of this key exchanges the contents of the display (xl register and the cQnstant (v} register. CLEAR AND CLEAR ENTRY KEY ©: Oepression of this key performs the following functions: 1. Resets error or overflow indicator. This dues not clear the display or memory. Press If} ONCE. 2. Clears the displav register (wrong entry L Previous entries and the arithmetic mode set are not affected. Press © ONCE. 3. Two successive dllpressions of the clear [g key will clear all registares EXCEPT lhe memory register. MEMORY OPERATION Depression of the following keys perform the various memory operations. I. Ii!ffi : Adds the contents of the displey (Xl register to the contents of the memory. The display (X) resister and all previous operations are unaffected by thIs operation. 2. 1M3 ; Subtracts the contents of the (Xl resister from the con- rents of memory_ The (Xl resister and all previous operation are unaffected by tbis operation. S. ~ : Clears the memory tsets memory contents to zero) without disturbing othercalcufator modes or resisters. 4. .MBl ; Recalls -the contents of memory to thE: display without clearing the memory_ MEMORY INDICATOR This indicator is a dot which wilt light in the-leftmost display position whenever memory contents are OOlHero. NEGATIVE NUMBER INDICATOR This !nditatot is located in the leftmost displav position and lights whenve-r negative numbers Of cndit balances are displayed. OVERFLOW (ERROR) INDICATOR This indicator is located in the leftmost display position. Any answer or subtotal exceeding eight digits to the left of the decimal point, overflow indicator "C' lights and eight most siqnfficant digits are displayed. The position of the decimal point in the overiloWlld displey telts you how many digitS' areoll'erflowed. For example, if the overfloWlld display readsC1234.5fl78, thadecimal point indicates four overflowed (counting from the left). The actual answer is 12345678oooD. -.

and only a zero, in the rightmost po,~ion, will appear on the display. EXAMPLE PROBLEMS The following example problems show you how easy it is to use the Accumatic™20 Calculator. The calculator should be turned on using the On-Off switch located at the top edge of tbe calculator. When the calculator is '011'. a zero wilt appear in the rightmost display position. You are now ready to begin. MACHINE CAPACITY l. The Capacity oi the machme IS 0.0000001 to 99,999,999 00 ""'0 10'·1). 2. The calculator displays. 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 automaticaflv suppressed to prevent overflow. 4. The calculator displays numbers less than 1 up to sewn digits. A- zero always appears to the left of the decimal point if the number is less than one. Multiplv Mode is still set fQr Auto- Constant Sets- Multiply Mode Negative Indicator tights COMMENTS Re,ul' 3-7 Negative Indicator lights Negative Indicator Goes Out Sets Subtract Mode Selt Subtract Mode SetS' Subtract Mode 8 8 EJ 4 MULTIPLICATION Example: 5.2 x 6.3 " 32.76 5.2 5.2 o 5.2 6.3 6.3 El 32.76 MIXED ADDITION, SUBTRACTION Example: 3 - 7 + 804 3 3 8 3 7 7 El -4 SUBTRACTION Example: 6 - 2• 4 ENTRY OISPLAV 6 6 8 6 2 2 EJ 4 NEGATIVE BALANCE Example: 4 - 9 ;. -5 4 4 EJ 4 9 9 EJ -5 Set, Add Mode COMMENTS ADDITION Example: 5 + 3 0 8 ENTRY DISPLAY 5 5 8 5 3 3 o 8

Example: 8 x 6 + l2 "" 4 8 8 IE] 8 Sots Multiply Mode 6 6 IB 48 Result 8 x 6 12 12 EJ 4 Sets Multiply Mode 2' 2' 2' POWERS Example: 24 = 16 2 2 o 2 B 4 El 8 B 16 AUTOMATIC DISCOUNT Exampla: A $15.25 Item Discounted 20% ENTRY DISPLAY COMMENTS 15.25 15.25 EJ 15.25 20 20 l!!l 3.05 211% of 15.25 El 12.20 . COMBINED M~RK·UP. DISCOUNT Example: A $31.25 Item Discounted 26% Plus 5% Tax 31.25 31.25 EJ 31.25 20 20 l!!l 6.25 211% of 31.25 EI 25.00 Discounted Price 5 5 l!!l 1.25 5% of 25.00 El 26.25 COMMENTS Sets Divide Mode N-o Need to Key~tn l..eading Zero Converts 5 to Percentage Format. Sets Multiply Mode DIVISION Example: 12.4 , 0 4 ~ 31 ENTRY D1SPLAV 12.4 12.4 IB 12.4 .4 0.4 B 31 PERCENTAGE Example: 5.... of 30" 1.5 5 5 l!!l 0.05 IE] 0.05 30 30 EJ 1.5 AUTOIlllATIC IIIlARK-U.P Example: A $47.25 Purchase Plus 4% Tax 47.25 47.25 B 47.25 4 4 l!!l 1.89 4% of 47.25 B 49.14

Example: 4. ~. 4.4= 258 ENTRY DISPLAY COMMENTS ENTRY DISPLAY COMMENTS 4 4 4 4 ffi 4 lEl 4 SelS Multiply Mode El 1 lEl 18 4 x 4 El 0.25 lEl 84 4 x 4 x 4 El 256 4x4x4x4 REPEATED OPERATIONS DIVISION ADDlTtON Example: 20+ 4 + 4 +4 = 32 Example: 2~ 2+2+2=0.25 2 2 ( 20 20 ill 2 SelS mvide Mode El 20 Sets Add Mode ill 1 2+2 4 4 ill 0.5 2+ 2+ 2 El 24 20+4 El 0.25 2+2+2+2 I El 28 20+4+4 El 32 20+4+4+4 CONSTANT OPERATIONS SUBTRACTiON MULTIPLICATION Example: 18-3-3-3= 9 example: 4 x 3 =12,4 x 5 =20 18 18 4 4 8 18 Sets Subtract Mode lEl 4 SelS Multiply Mode 3 3 3 3 8 15 18- 3 El 12 Sets Auto·Constant 8 12 18- 3-3 5 5 El 9 18- 3-3 - 3 El 20

buy 5 ot Item A tor 50.25 each end 6 of Item 8 for 50.75 each. You return for credit 2 of hem Cat SO.15 each. CHANGE SIGN Example: S:J-3)=-5 ENTRY DlSPLAY ENTRY DISPLAY 5 5 I8l 5 .25 0.25 El 1.25 I'iB3 1.25 6 G 119 6 .75 0.75 El 4.5 I'iB3 4.5 DIVISION Example: 6+ 2= 3,8+ 2=4 ENTRY DISPLAV COMMENT,S G G ttl 6 Sets Oivide Mode 2 ~ EI 3 Set, Auto·Constant 8 8 § 4 CHAIN OPERATIONS E)Camp'e~ {6 ... 4)$2 - 8 "" 2.4 6 6 EJ G 4 4 o 10 6+4 2 2 8 20 {6+412 8 8 ttl 12 (6+ 4) 2 - 8 5 5 B 2.4 Result REGISTER EXCHANGE Example: 2 ~53:" 3 2 2 B 2 3 3 ttl 5 2+3 15 15 g;;j 5 Exchanges X and Y Regi,ters B 3 5 00 00 3 ffEJ ttl 15 B 5 5 25 3 -3 -75 15 -5 COMMENTS Sets Multiply Mode 5' 5' x (-3) Negative Indicator Goes Out Negative Indicator lights COMMENTS Cost of Item A Memorv Indican" lights Cost of Item B Add, Cost of ltom B to Item A in Memory

Subtrocls Item C from A & B in Memory Total Scale CI44rs Memory OVERFLOW AND ERROR INDICATIONS Whenever the capacitY of the machine is exceeded or an impossible calcufation is attempted the error indleator in the leftmost displav position will light. The error conditlnos relevant are: 1. Depressing G. 8 •0.B where the ma!fllitude of the re,ult is greater than 99,999,999. 2. Depressin9 Mil or M3 where the ma!fllitude of the result in memory is greater than 99,999,999. 3. Division by zero. Example: 5 B 4 19 3 EJ 5 + 3 = 8 5 5 4o 3 8 Should Have Been 3. RECOVERY TECHNIQUES Occasio-naHy during c1aculations, an undesired arithmetic function key may be depressed. Utilizing thest! simple recovery techniques makes it unnecessary to begin the calculations again. For example, if the B or B keys are inadvertently depressed, simply enter a 0, depress the intended arithmetic funetian and continue with the calculation. If the 0. or l±l keys are inadvertently depressed. simply enter a 1, depress the intended function key and continue with the calculation.

matt!riats and wOrkmanship under n-armal use and service for the following period: PARTS J YEAR LABOR 90 DAYS This warrllllty begins with the date of purcha.. and applies to the original owner only. Within the s.pecified period LLOYD'S will repair or replace any part(s) which we deem defective through normal u,", at no charge extept for a factory processing fee of $1.15. All products must be returned 10 the appropriate LLOYD'S Factory Service Department ffJr Warrantv Service-. IMPORTANT: To obtain Warranty SeNi", on any producl, you must pre..nt a copy of Ihe Bill of Sale as proof of valid guarantee. If the merchandise is tD be mailed to US~ be certain to include the BUI of Sale along with your check or money order for the processing fee. Any alterations, abuse. misuse. batte'Y corrosi«;10 or aecitk!ntal damage VQids tttis guarantee. Any repairs made by other than a LLOYD'S Factory Sent;t:e Cenmt are not coveted bY our warranty. This guarantee is in lieu of all other guarantees, either expn!ssed Of implied and is valid ontv in the Continental U.S., Alaska, Hawaii and Canada. Bevond the warrantv period service may be obtained at- the Factoiy S~rvjce Centers at reaso-oable rates~ U.S. LLOYD'S Electronics of Calif., Inc. P.O. Box 4248 Compton, California 90224 CANADA LLOYO'S Electronics Ltd. 11 Plymouth Street Winnipeg, Manitoba R2X 2V5 LLOYD'S EI..tronlcs Eastern Ltd.- 857 Yorkmill. Road Don Mills, Ontario, Canada LLOYD'S Electronics Eastern Ltd. 165 Graveline Road Ville St. Laurent, Quebec, Canada i:1III~rliil.r.... ,··~~·~~",,"-iiiiio--__'_'"- _