INTRODUCTION ihe Bowmar MX 100 Scientific Brain utilizes recent deveiopments in solid-staie integrated circuitry to provide a vast extension of conventional slide-rule capabilities, with far more accuracy. It is also more versatile, and it is compact enough to be pocketable. Jt replaces tedious and eye-straining correlation of finely inscribed slide-rule scales with a simpler lou ching of buttons on a keyboard. At the same time, it reduces determination of a. numerical result to the reading of the numeral directly from a lucid display, It also supplements functions 01 a conventional log-Iog··decitrig slide-rule by t€3turing a memory that eases progress through complex multiple-operation problems. Your new Brain operates in the algebraic mode and can accept a numerical input of as many as eight digits. It handles the four basic algebraic operations (addition. subtraction, mUltiplication, and division) and those scientific functions listed below, all with full floating point. 1. Sine. cosine, and tangent of degrees or radians (depending on the setting of an external switch). 2. Inverse trigonometric functions of sine, cosine, or tangent, 3. Natural and common logarithms 4. Exponential functions (e~) and exponential powers (yX) 5. Square root (v'x) and inverse (Ijx) 6. Keys for 'iT and sign change 1 ,l.,lll '. J. 1 il. ; "..IdbJ L diU, t 5 U' ,ii! Ii '--L.U ,1Ft: 7. A key for the exchange of contents of the display te~Jister (x regis tor) and working register (y register) t8 In addition !o these functions, your calculator has memory with tho foflowin(J meaDs of access: m 1. A storage key tor storing a displayed numeral in the memory. 2. A recall key for withdrawing and displaying the content of the rn8mOty without losing it tram the memory. 3. An exchange key ~ tor 8Kchanging t:!m contents 01 the display and memory registers. 4. A memory Clear key for discarding content of the memof"Y. Your calculator also features capability for chain and automatic constant operations> Its display is right adjl,.,lsted with leadjng zero suppression. With algebraic operations, , results of up 10 sixteen digits may be obtamed by use of overflOW interpretation, With scientific operaEons, display results may contain up to six digits. the iast digit having a ± 1 tolerance, m To realize the full potential of the MX-IOO you are asked to carefully read the following material and instruclions. Optirnum familiarity can be gained only through frequent use, and as a start you are advised to foilow through eactl iJiustralive instruction with your calcu':ator in lwnd, During routine use, reminders ot opemt(onal procedures 7, 11 may be obtained from the brief outline of instruciions ptinted on tile back of the calculator. 2 II £JSL&14 UllIli.tdI aU) OPERATION AC Operation: Set the switch on the back of the Charger/ Power Supply to the electrical outlet voltage, i.e., 115 or 230 Volts. Plug the Charger into the outlet and the connector into the Calculator. (Note that the connector (s k'2yed.) AHer these connections, the power switch may be iurned on and operation started. Baltery OperationDisconnect the Charger cord and turn the power switch "ON". With normal use a lull battery charge cao be expected to supply about <1 hours of working lime. 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 ott. Battery Charging: Simply to!low the same procedure. 3S ir. AC operation. The Calculator may be used during the charge period if desired. in order to iuily charge a baHer·y which has been completely discharg€.d, 7 hours is required. In most ca$e~". an overnight charge should be adequate. NOTE· AIU,ough no damage wiil r-esl)lt from prolonged periods winl tho Charger connected, (t i'2. advisable to remove i.he Charger when it is not in use or after a full recharge cycle. CAUTION: To avoid possitlle damage, use only the charger provided with the calculator. ,:;::..\J£LJUIL.lI£,! (it.U;; $IIU h ,. a LJ.t1 ".. M._.£.; CONTROLS & INDICATORS - 5. 4.. ~=- NOTE: Descriptions that follow wili be beller understood jf you take a moment to learn these basic facts. First, two separate registers are provided for retaining the numbers you enler into the Calculator for an aritt,metic oper"atlon. One is the Display Register which is aiso refened to as the x Register. The other is Working Register or y Register. Any number you enter is keyed direcily into the Display IX Register) for yOU! visual review. This entry is Hlen completed wrlen you key in the appropriate arithmetic operative (+, -. x, or _C-_). As you begin to enter the second number, ttle first is automatically transferred fom the x Register to the y Register. The y Register retalns this first number until you clear it or you exchange contents of the x and y Registers by means of a special key provided for that purpose. 3. Second, your Calculator Keyboard was designed for a minimum of keys in order to pro'liide optimum fingertip access within conven'lent confines. This feature was enabled by incorporating a block of dual purpose keys that work in conjunction with an electronic "shift" system. Ttle electronic "shit\" of your calculator compares with the shift of a typewriter. Your calculator responds 10 the characters on the keys in its unshifted mode, and it must be shifted each time a keyis to be operated for a function printed above a key. The calculator's shift key is \dent(Hed by tile lettel' ··F". ReIer to tile sec !Ion of PRELIMINAi1Y INSTRUCTION for details of dual purpose Keys. 5 I.J Jii 2£ ,j 2_ b4 w 1. "ON" Switch A two position sllde switch that turns the Calculator "ON" & enters '1' e' o Raises e(2.71828) to power of x shown on the Display, up to a limit of = 18.42. "OFF". 2. A two position slide OEG/RAD Switch switch that selects degrees or radians for the expression of angles. 3. Key \/i Keyboard 25 keys that may be categorized into groups of data keys, arithmetic operation keys, memory operation keys, and command function keys as tollows: A. Data Funclion Keys (all are dual-purpose and labelled ac.cordingly. Character mode refers to label on keyface, while Function mode refers to label situated directly above key.) Character Mode LNX enters '2' Computes the natural logarithm of any displayed number greater than zero. Error condition is set for a negative number. LOG X enters '3' Computes the logarithm (base 10) of any displayed number greater than zero. Error condition is set for a negative number. SIN-T enters '4' Computes the arcsine, in degree or ra.dians, of any displayed number from 0 to ±1. Error condition is set tor any other number. enters '5' Computes the arcosine, in degrees or radians, of any displayed number from 0 to :±:1. Error condition is set for any other number. enters '6' Computes the arc- EJ D D Function Mode a enters '.' (decimal) Computes square root of a displayed number that is greater than zero. Error condition is set for a negative number. Ilx enters '0' Computes reciprocal of a displayed number. l:) x COS-T D Error condition is set for tangent, in degrees or radians, of any displayed number whether positive -, or negative. a display of zero. 6 2 ElE g4SIil4i1JS£Jli .CJ iL i. 1i2J]Jl! , ,.ALa .it)( 11Q. _A$.iP "J a enters '7' SiN D cos enters '8' D Computes the sine, with proper sign, of any displayed angle, whether in degrees or radians and whether positive or negative. Computes the cosine, with proper sign, of any displayed angle, whether in degrees or radians and whether positive ar negative. enters '9' TAN D Computes the tangent, with proper sign, of any displayed angle, whether in degrees or radians and whether positive or negative. B. Arithmetic Operation Keys a Completes the previous operation and sets add command. Completes the previous operation and sets subtract command. EJ C. Memory Operation Keys Clears the Memory to zero. Adds the Displayed number to the content of the memory and stores the sum in the memory. Displays the content of the memory. The content of the memory is not lost with this operation. Exchanges contents of the x {Display} Register and the Memory. D. Command Function Keys During an entry it clears the entry with single depression. For all other operations, it clears all operation and sets registers except the memory register with single depression, S £ Si. Completes previously entered add, subtract, mu(tiply, divide or y'" instruction. Completes previous 'multiply' operation. II. • Completes previous operation and sets divide command. 9 • • It clears the overflow sign with single depression. Enables a number y to be raised to a power x (see pertinent Instructions) . a Shifts between Function and Character Modes ot dual-purpose keys. A dual-purpose key that changes sign of the Displayed number in the Character Mode, and displays 7T (3.1415926) in the Function Mode. Decimal Point Indicator Automatically appears to the right of any number entered, unless inserted in another sequence by use of the Decimal key. Function Mode indicator Confirms shift of dual function keys from Character to Function Mode. Appears as: 5. Charger Cord Socket 6. Charger/Power Supply Exchanges contents of x and y Registers. PRELIMINARY INSTRUCTIONS 1. To clear for new operation 4. A. Touch the ~ key two consecutive times to clear all registers low Battery Indica\or Warns of need for battery charge during battery operation. Appears as: B. Cleared display will be: . Minus Sign Indicator Appears as: Error and Overflow Indicator dlL JLCii; Ji 2. To clear an incorrect entry Indicates a condition or computation that the Calculator is not intended for or cannot perform. Also indicates Overflow. Appears as: 10 !.tEUS Example: 48 + 12 \s your calculatlon A. You have already entered 48 -t Display is', 11 $ t JtJ LUi! '0, B. Then you enter 13 ins.tead of 12. 4. To enter a mathematical computation Entry of a computation is greatly simplified when it is first converted to algebrnic form. Display is: A mistake! C. To clear 13, touch the ~ key once only. Display is: 1. + 2. ~ 438 296 3. 438 x 296 4, 296) 438 In algobraic form, these computations are: 1. 3, D. Then enter 12. Display is: E, Finally, touch the answer. Display 'IS: 438 2\}6 438 + 296 = 438 x 296 ~ 2. 438 - 296 ~ 4. 438 '0' 296 ~ These computations are then entered a digit or operative at a time, beginnIng with the left-most figure and progressing to the right For full detalls refer to specific instructions and examples that follow. II key for 5. Reading a numerical result NOTE: An ~ncorrect entry should be cleared prior to any other entry or operation. A. Results 01 etght digits or less are read directly from the Display. B. In certain computations, zeroes at 3. To enter a number the extreme right of a decimal result will be suppressed. For example, a result representing S16.30 may appear as: Example: enter 123.45 A. Starting with the left-most digit touch keys as follows: 1,2,3, ., 4, and 5. 16,3 C. Results of more than eight but less than seventeen digits will appear with the overflow Indicator (described B. Display will be: 123.45 under Conlrols & Indicators). See Instructions for Overflow Inte rp retal ion. 12 I _XU h. .2 ! _. : Ii. -La Q 6. Dual purpose keys SAMPLE CALCULATIONS ADDITION Example #1: To calCUlate 16.39 + 9.83 Dual purpose keys are identified by dual labels. One label is directly on each keyface and is referred to as Character Label. The other label is directly abo\'€ each key and is the Function label. Thus, the dual labels suggest operation in either the Character Mode or the Function Mode. Do these steps b. Enter 16.39 16.39 d. Enter 9.83 9.83 I!I e. Touch D Ex.ampte Touching the key shilts Calculator response to the Function Mode for the operation of one dual purpose key only. Each subsequent use of Function Mode must be preceded by operation of the key. 16.39 a c. Touch iii o ~ twice. a. Touch Normally the Calculator responds directly to the Character Mode of a dual purpose key. The response may be shifted to the Function Mode by first touching the key. "= display will be 26.22 Answer ~2: To calculate 16 + 9 + 8.3 + 4.1 "= 00 these steps display will be 3. k1I Touch twice b. Enter 16 D When the key is touched to shift Calculator response to the Function Mode, a corresponding Function Mode indicator appears on the Display, Note that the Character Mode may then be re-established either by retouching lhe key or by completing a Function Mode operation. II c. Touch d. Enter 9 e. Touch D a f. Enter 8.3 g. Touch D 33.3 h. Enter 4.1 1a -',ijULL.MJ & AUIB.! ;; II 14#£._ Ii i. Touch ,. tXt iJ L m ?'ill a . Answer 15 -- 37.4 1 ! SUBTRACTION Example ;'3: To calculate 12.81 - 3.6 = Do these'Tsteps display will be Example ii5: To calculate 62 - 82 + 10 - 40 Do these steps ~ twice a. Touch a. Touch ~ b. Enter 12.81 12.81 a c. Touch 12.81 = display will be twice b. Enter 62 c. Touch a d. Enter 3.6 III e. Touch d. Enter 82 Example ::4: To calculate 23 - 6 Do these steps fi.J1 a. Touch 9.21 Answer + 2.1 e. Touch f. -5~ display wU\ be twice I. Touch a a, Touch a a a Answ€r W 10. - 50. twice 29.32 b, Enter 29.32 19.1 EI 29.32 d. Enter 56.5 56.5 c. Touch h. Enter 5 Touch - Example ::6 To calculate 29.32 x 56.5 "". Do these steps display will be 1. Enter 2.1 I. a=I MULTIPLICATION d, Enter 6 g. Touch 20. h. Enter 40 II e. Touch - Enter 10 g. Touch b. Enter 23 c. Touch II Answer 14.1 ' 1) 8. Touch II Answer 1656.58 DIVISION Example #7: To calculate 61 -+- 3 -+- 9 = Do these steps display will be a. Touch ~ twice b. Enter 81 c. Touch II REPEATED OPERATIONS Example #8: Arithme1ic operations (add, subtract. mUltiply, and divide) may be repeated on a single r1umber as follows (using 1he number 3 as an example). Initial steps for each operation are a. Touch W. 1wice to get d. Enter 3 e. Touch b. Enter 3 II then do these steps f. Enter 9 g. Touch II to get Answer c. Enter a DISPLAY WILL READ for for subtract multiply 3. 3. 3. for divide 3. or II or 13 . or • ..,I I , ... ~ 1 1 . rl TOUGlliiI 0 9." II 9. -3. 27. 0.3333333 f. Touchll 12. -6. 81. 0.1111111 g. etc. 18 19 ; I .-0. e. Touch ; !, '_ CHAIN OPERATIONS (Mixed Arithmetic) CONSTANT OPERATIONS Addition, subtraction, mutipfication, and division by a constant may be performed as follows (using the number 'N' as the constant). A. Addition Example #9: To calculaltiI3+26) 15..-::,_49,_ 38 display will be Do these steps a. Touch ~ Ex.ample #10: twice j I b. Enter 73 c. Touch a f. E:I . Touch II f. 1485. II Touchl!"- iii Touch Ell N + X. g. Enter the number Y h. Touch 1436. iii N + Y. i. Enter the number Z J. Enter 38 k. , e. Entor the number X 15. h. Enter 49 L twice a b. Touch d. Touch Enter 15 g. Touch a. Touch ~ c. Enter N d. Enter 26 e, Touch display will be Do these steps Answer .. 37.789473' } I j. lauen iii k. etc. B. Subtraction Example #11 : a. Touch ~ 20 N + Z. . twice b. Enter 2N . 21 2N. c. Touch a D. Division Example #13: a. Touch d. Enter N e. Touch f. iii g. Touch Touch e. Touch II c. Touch II x- • N. h. Enter the number Y !. d. Enter m II m b. Enter Enter the number X f. II! Y - N. twice Enter the number X g. Touch II j. etc. h. E:nter the number Y C. Multiplication i. Touch Example ,~12: a. Touch t1I c. Touch twice f. g EI / ' Y. II A. Sine Example #14: To obtain SIN 32 0 (set the DEGjRAD switch to DEG) Do these steps display will be II NxZ. a. Touch h. etc. ~ twice b. Enter 32 degrees 12 _ J i YIN. Iuslng key) I Trigonometric Function All trigonometric functions may be performed in degrees or radians, as determined by posltioning of the DEG/RAD switch. Enter the number Z g. Touch II FUNCTION OPERATIONS d. Enter the number Y e. Touch XIN. j . etc. b. Enter N - ~ 23 a 2 t $if G. TOUGh d. Touch D SIN Ii \ B. Cosine 32. Example ;17: To obtain COS 32° (set the o'EG/RAD switch to DEG) Do these steps display will be 0.529919 Answer Example #15: a. Touch To obtain SIN 4.4157 radians (set the DEG/RAD switch to RAD) display will be Do these steps a. Touch ~ c. Touch d, Touch . 4.4157 \ 4.4157 Answer - 0.95631 a. Touch (set the DEG/RAD switch to DEG) display will be Do these steps c. Touch Answer ~ display will be twice Ii TAN d. Touch \I Inverse Trigonometric Functions - 198. d. TOUGhl'il -: 198. I] (degrees or radians) 0.309017 a, Touch ~ twice b. Enter .529919 ; _ i . '- _iJ.4. , 0.529919 25 24 ;, 0.624869 Answer A. Arcsine Example ,';"19; To obtain SIW' 0.529919 (set the DEG/RAD switch to DEG) Do these s'\eps display wii! be SiN - 0.848048 198. c. Touchm, Answer 32. b. Enter 32 degrees twice b. Enter 198 degrees D Do these steps Example (:16: To obtain SIN (-198°) e. TOUChD \ C, Tangent Example #18: To obtain TAN 32° (set the DEG/RAD switch to DEG) SiN W. iii cos G. TOUGhl] a. Touch twice b, Entor 32 degrees twice b. Enter 4.4157 d. TOUGhS t"i .L ; .' c. Touch iii \ a 1 0.529919 SIN-l d. Touch C. Arctangent Example #22: To obtain TAN-) 0.624869 (set the DEG/RAD switch to DEG) Do these steps display will be . 31.99998 Degrees Example ;20: To obtain SiN-I (- 0.529919) Iset the DEG/RAD switch to DEG) 'b Do these steps display will e a. Touch ~ a· Touch ~ twice b. Enter .624869 '. 0.529919 b. Enter .529919 D SIN-l ",. 0.529919 e. Touch a d. -; 31.99998 B. Arcosine Do these steps ~ display will be twice b. Enter 2.32 twice 2.32 " Touch ~ IJ e' Touch D - d. Touch 0.848048 b. Enter .848048 iii \ 31.99999 III Exponenflal Function c. c. Touch Degrees 0.624869 Example /:23: To obtain e -2.32 a. Touch Example ;;21: To obtain COS- 1 0.848048 in Radians , (set the DEG/RAD switch to RAG) Do these steps display will be a. T auc h lB3 £!I \ TAN-1 -.: 0.529919 Degrees II Touch D 0.624869 c. Touch c. Touch ~ d. Touch twice e. 2.32 2.32 Answer 0.098274 0.848048 COS- 1 d. Touch D 0.558505 Radians 26 -",__:.'•.•'.l.'__.... 27 ....: .2.Ji2i!U"··- ••,.J• •I!il¥I!ilUI!il. _ IV Natural Logarithm Example i24: To obtain In 5·623 . 00 these steps display will be a. Touch ~ twice 5.623 LNX c. Touch 1.726866 Answer , display will be Do these steps tWice 4.83 b. Enter 4.83 c. Touch D \ 4.83 lOGX d. Touch EJ 0.683947 Answer VI Square Root Example ::26: To obtain "\/341.57 Do these steps display will be a, Touch ~ twice d. Touch 341.57 11 \. x II Q \ D Answer 638.72 0.0015656 VIII Pi (ee) Example :::28: To obtain a numerical readout for the constant 7.. Do these steps display will be a. Touch ~ twice b. TOUCh D c. Touch " t:.m Answer , 3.1415926 EXPONENTIAL POWER Example #29: To obtain (35)3-2 Do these steps display will be a. Touch ~ twice b. Enter 35 b. Enter 341.57 c. Touch 638.72 1/' d. Touch V Common Logarithm Example :(25: To obtain log\o 4.83 a. Touch ~ twice b. Enter 638.72 \ c. Touch d. ~ a. TaUCrl 5.623 b. Enter 5.623 D Touch B VII Reciprocal Example #27: To obtain the reciprocal of 638.72 Do these steps display will be \ Answer 28 341.57 18.481612 c. Touch m gives the natural log of 35 3.555349 d. Enter 3.2 e. Touch II Answer 87300.83 29 $ r MEMORY OPERATIONS The following exercise is aimed at fami!arizing you with memory operations and capability. memory will contain display will be Do these steps a. Touch m b. Touch em twice , 250. O. 250. 250. e. Enter 300 300. 250. 2 300. 550. EI 300. 550. 120. 550. 120. 670. 36000. 670. d. Touch louch t g. Touch ~ j Touch £ II 670. I. Touch 670. a 1m 670. 670. n. Touch 670. o. II Touch E3 720. 670. 720. p. Touch 1;1 q. Touch 1m l. -" .. ;. LX key offers many Possibiiities for use. Example #30: The problem 36 + 72 has been entered, and you decide fa change the number 36 to 35. Proceed as follows, first by entering the problem: display will be b. Enter 36 c. Touch II d. Enter 72 36. To change 36 to 35 8. Touch £Ii 72. f. Touch ~ once 72. g. Enter 35 72. h. Touch IiIAnswer 107. 720. itt 1 J! 31 O. Answer _R 3j.1 _ y register ~ 8. Touch k. Enter 50 m. Touch t:i2 Do these steps h. Enter 120 i. Touch ~.~ The One of tt18se offered below. O. c. Enter 250 - ? TRANSFER X AND Y REGISTER CONTENTS - t.¢' ilL]] 72. MIXED PROBLEMS Example ':31: do 36 + .- 9_.8 +~_ = 46 Do these steps a. Touch Example i32: find the antilog of .30103 (base 10) A, One way is to raise 10 to the power of the logarithm as follows: Do these steps display will be twice b. Enter 10 ril c. TouCh b. Ellter 3 c. Touch ~ a. Touch display will be !iI (gives natural log of 10.) II 2.302585 0.30103 d. Enter .30103 d. Enter 46 e. Touch f. n II h. Touch 1.999999 36 8.0652173 memory I] Do these steps II' a. Touch b. Touch;a o. c. Enter 36 O. d. Touch e. Enter 94 f. Touch g. Touch Touch r!I J. Touch EI k. Enter 9 I. Touch e. Touch DAnswer ~~x~amrjP~le~.~-:-3J3~:fdIO~~ffi13:~=]~ )36 (36 43)(36 15) (36 94) ~ Enter 8 g. Touch i. 0.0652173 a 1.1159028 m. Enter 36 n. Touch !lAnswer 37.115902 32 display will be will hold m twice a II =: o. O. - 58. O. - 58. -58. h. Enter 36 i. Touch J. Enter 15 k. Touch II . . - m. 13 Touch t!iliI Touch iii n. Toucht!3 - o. ~ I. Touch -58. aa. Enter 36 36. -58. bb. Touchlil Answer 15. -58. Example #34: do /1 - O.684SIW 56 0 = -58. - -58. 1218. -58. r. Enter 43 -1218. EJ - t!iliI Touch 13 and im Touch Enter 36 w. Touch . 1218. -1218. - 306936. o. o. o. 306936. o. 554.01805 o. o. 8526. . II Touch III .... Touch z. Touch b .; . .1 ,j, 36. a II Iti ~ Touch ; dO 'JJi, 1. , .Ail 1 Qt 56. 0.829037 - 0.18749 g, Enter 2 7. -1218. \i X y. f. \ SIN h. Touch v. x. e. Touch 13 fJ' 0. Touch Touchll u. display will be b, Touch ~ twice -1218. q. t. O. c. Enter 56 -1218. Touch Do these steps 58. -1218. Enter 36 s. 15.38939 a. Sot DEG/RAD switch for DEGREES 58. -1218. p. o. II EI j, Touch J. Enter .684 k. Enter I. Touch m. Touch 0.687303 0.687303 0.684 II I! D 0,4701152 -0,4701152 -0,4701152 n. Enter 1 o. Touch iii 35 : 2 0.5298848 p. Touch iii \ 0.5298848 o. Touch 0.7279318 p. Touch Vi q. Touch IJAnswer Ii 0.0144792 cos a 0.992546 0.0144792 b. Touch ~ twice o. c. Touch m O. EI r. Touch II s. Touch II t. Touch 13 u. Touch liiJ O. v. Touch IIAnswer q. Touch display will be Do these steps memory will hold a. Set DEGjRAD switch to DEGREES d. Enter 7 iii e. Touch O. SIN f. Touch g. Touch h. Touch i. Touch J• Touch D EI I!I II 0.121869 O. 0.121869 O. 0.014852 o. o. o. ~ EI o. k. Enter B I. Touch I!I 0.0144792 o. m. Touch m 0.0144792 0.0144792 !L I. 0.9778042 0.0144792 0.9778042 0.0144792 0.0144792 0.0144792 0.0144792 The positive or negative overflow indicator indicated by r or ( ,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 r 42676.292 The' r' symbol indicates positive 'overftow' and indicates an answer of more than B digits shown. To obtaIn the correct decimal location for either case, simply record the displayed number and move the decimal polnt 8 places to the right. The real answer will then be: 4,267.629.200,000. L 8 places .. j a This procedure applies to all operations. Use the key to clear the overflow. 36 ..... , 0.9851475 0.0144792 OVERFLOW INTERPRETATION 0.0144792 n. Enter 7 0.992546 0.0144792 ,UJ; H; 11 .J L2 • SPECIFICATIONS Capabilities: Algebraic Functions _. addition, subtraction, multiplication, division, reciprocals, square roots, sign change and 'C, (31415926) Scientific Functions - exponential functions (c'L natural and common 10Qarithms, arcsine, arcosine, arctangent, exponential powers (y'), sine. cosine, tangent. Memory Functions - memory storage, memory recall, memory clear, exchange of memory content and display. Miscellaneous - exchange of x and y register contents, chain and constant operations, right adjusted display with leading zero suppression, overflow, low battery and scientific mode indicator, Decima! Point: Full floating decimal point. Electronic Configuration: Solid Stale -- primarily integrated circuitry plus certain discrete components. Dimensions: 1 % in. H, 3 in. W. 5 in. D. Weight: 9 oz. Accessories: Charger/Power Supply: Vinyl Pouch: Instruction Book. Calculation Speed: 3 Seconds Maximum Operating "Temp.: O"C to 50"C Storage Temp.: - 20"C to + 70 G e Calculation Range: Up to 10 1°-1 Accuracy: Algebraic Functions - 8 digits. Scientific Functions -- the 6 left-most digits shafl be correct to within ± i in the sixth digit from the left, including any suppressed zeroes. Power: AC Operation - '110/120V, 50/60 Hertz: Battery Operation - NiCad Celis (3); 4 hour operation; 7 hour charge. 39 38 ..,." & [' "1 1.1.1.11'1; - - - Ii.llIa.1• •I~i• • • • • •2.ItK: WARRANTY BATTERY NOTES Bowmar/ALl, Inc. WBrrallls to the purchaser of this neW Bowmar Calculator thai if the machine or any part thereof in the judgment of 80wmar is proven to be defective in material at workmanshJp wilhJn one year from date of original purchase, such defects will be repaired or replaced (at the Company's option) free of charge for parts and labor. 1. With normal use at room temperature, a full battery charge can be expected to supply about 4 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 for as long as 2 or 3 months will suffer substantial loss of operating time through a tendency to self-discharge. As a general rule. batteries lose about 1"/0 charge per day due to self-discharge. at norma) temperatures. 4. For optimum performance and long life a. Alternate frequently between Battery and AC power. b. Operate at or near normal 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 performance of the Calculator- Should further discharge occur, through continued operations or sell-discharge, the Low-Battery indicator may fail to appear. Do nDI continue to operate on batterieS when this cDndition is noted, or a damaged battery may result. 7. As a general rule, if improper operation occurs, first try the Calculator with its charger connected. If 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 operate satisfactorily over an ambient temperature range 01 0 to SOC {32to 122F) and relative humidity to 95%. 40 ...... U £ ;; This warranty does nol apply 10 any product which has been damaged by accidenl or which has been misused, abused, altered, or repaired by anyone other than Bowmar. This warranty is in lieu of all other warranties expressed Dr implied, and no person is authorized to assume for Bowmar any other liability in connection with the sale of this product. To obtain repairs, the Calculator should be delivered, prepaid, to Bowmar/AU, Inc. at address shown below, Please enclose $1,00 with the unit to cover shipping and handling. ALI SERVICE CENTER BOX 648 WEST ACTON, MASS. 01720 A920.900jB Printed in U.S.A. iv' Slk. #16503 li .J.

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