- HP-45

Prove it to yourself! See invitation inside Only the HP-45 has 9 addressable memory registers ... a 4-register The HP-45 has operational stack ... and a "Last x" register ! more functions, ~ , , Operation a1 more features , Stack , than any of the --

Scientific Pocket Calculator- feature against complex problems faster . > • easier .. . and more accurately. feature. . funct ion against function. The exclusive 4-register operational stacK retains as many as 4 intermediate solutions in sequence, and automatically positions them for use Don't Just compare what's visible on the on a last in , firs t out basis. At the proper time, the solutions are automatically outside. Compare what's inside, too. entered into the calculation being performed, so you don't have to re-enter them manually. It's this automatic operation of the 4-register stack that makes For example, compare the number of RPN (Reverse Pol ish Notation) possible. registers. Most other have 1 or 2. The stac k design also permits X and Y register exchange, and roll-down The HP-45 has 14! of any entry to the display for review or other operation. The " Last x" register permits error correction or multiple operations. When Compare the type of logic used. The HP-45 a function is performed, the last input argument of the calculation is uses RPN (Reverse Polish Notationj­ automatically stored in the " Last x" register. This argument can be quickly "computer logic"- the only system that allows and easily recalled to correct an error, or to perform another operation using you to solve any problem without restru cturing, the same number. so there's far less chance for error. 9 addressable memory registers make data manipulation easy. You can store data (an intermedi ate solution, a constant, etc.) in any of the 9 registers And compare the pre-programmed · .. retrieve it instantly ... and even do register (+ , - , x, + ) function keys. The HP-45 has 48 arithmetic, using or modifying data in any register. trigonometric, logarithmic and data The HP~45 uses RPN to give you manipulation operations. Yet it's still compact confidence in computation every step of the way enough to fit in your sh irt pocket. Most other scientific pocket • You see every interm ediate cal culators (and all of the bargain­ solution on the display. Thus it's Compare . . . and you'll quickly discover priced , limited-function calculat ors) easy to check the progress 01 that the HP-45 is exactly what you need to use algebraic logic. It's easy to your calcu lations as you go. No solve your problems . . . anywhere, anytime! Jearn, but there are some serious need to worry whether you 're drawbacks. going wrong ! If you're still using a slide rule, you'll fi nd For example, when usi ng it to • You can recall previously-entered that the HP-45 is up to 50 times faster ... and solve complex problems, you often data instantly. Just press the R~ far more accurate. have to restructure the problem to key to "roll down" the operational conform to the logic. (Then you worry stack, for review or other If you 're still tied down to cumbersome log whether or not you restructured it operation. and trig tables, you'll be happy to know that all properly, because if you didn't your RPN gives you " confidence in of the tables are pre-programmed into the answer will be wrong !) computation"-confidence that the The HP-45, however, uses RPN data was entered correctly .. . that HP-45. All you need do is press a few keys! (Reverse )­ the intermediate solutions are what And even if you have access to an on-line " computer logic." It should take you they should be .. . and that the final computer, the HP-45 can save you minutes, all of about two minutes to master, solution is free from error. and once you do ... Also, problem-solving is fast er, hours or days of waiting time ... by giving you • Every problem can be solved just es pecially with any calculation the answers you need when you need them. the way it's written, in natural, sequence involving arithmetic, Yes, compare the HP-45 ... try the HP-45 left-to-right sequence. No restruc­ trigonometric, logarithmic , power or turing .. . no confusing rules to exponential functions. Not only is . .. and you'll see why it's now the standard remember. Regard less of the type there no restructuri ng to do, but, in of the industry! of problem, you can solve it using most cases, fewer keystrokes are j ust one simple sequence of steps! required. And, you don't have all • Yo u can start solving the problem those intermediate solutions to jot immediately. There's no need to down and re-enter, thanks to the think the problem all the way HP-45's operational stack and through beforehand. You can memory registers. even change your mind midway RPN-another Hewlett-Packard without having to start over! exclusive in pocket calculators! Unique " shift key" doubles the function of 24 keys Convert polar to rectangular The factorial function lets The Gold Key gives the HP-45 • coordinates or vice versa. you quickly calculate Vector calculations are combinations and increased capability with no increase in • size! Primary functions are labeled on the simple too! permutations keys, with alternate functions above. To Simply press this key to convert to polar Merely press the Gold Key, then the key utilize an alternate function, simply press coordinates, or press the Gold Key and for "n!" to quickly calculate the factorial the Go ld Key first, then the appropriate then this key to convert to rectangular of positive integers. Instead of spending key. coordinates. Vector calcu lations are many minutes on such problems, you can simple on the HP-45. To add or subtract do them in just seconds! vector components, you may combi ne the polar-rectangular function with the Two display modes accumulation function: " 1;+ ." offer versatility Unless programmed otherwise, the HP-45 automatically rounds off the display to two decimal places. But by pressing " FIX," then any digit key from 0 to 9, you can specify the number of decimal RCL places shown on the display (example Metric/U.S. unit constants are below). The full accuracy is always DEC, pre-programmed in for immediate RAD G U maintained internally. The fixed decimal display automatically overflows to fu ll conversion scientific display and underflows to zero You can quickly convert U.S. units to ENTERt metric units, or convert metric units to U.S. uni ts, for rapid calculation of problems involvi ng length, weight or Trigonometric functions may be volume. And you get 10-digit accuracy! performed in any of 3 selectable angular modes, with instant conversion to or from degrees/minutes/seconds You can perform trig operations in Fix 4 degrees, radians or grads (Eu ropean By pressing the Gold Key, then "SCI," These keys make system) simply by pressing the Gold Key, you can manually change the display to statistical then the appropriate mode key. All trig scientific notation (example below), 1...__ 1 analysis easy functions calcu late decimal angles in which is useful when working with very whichever angular mode is specified. The "1;+ " key provides a running total In a similar way, you can instantly large or very small numbers. You can when summing numbers, keeps track of specify the number of significant digits convert from an angle in any angular mode the number of entries and automatically to d / m/s (degrees/ minutes/seconds or displayed after the decimal point (from computes the sum of the squares. The o to 9) in either mode. hours/ minutes/seconds). For example, "x,s" key calculates the arithmetic mean 45.89° - 45 ° 53'24". The answer is and the standard deviation of the automatically rounded to the nearest numbers entered. The HP-45 can second. Or you can convert from simultaneously accumulate two sets of d/m/s to the equivalent decimal numbers. ang le. By changing angular modes between these steps, you can Scientific Notation 4 also convert any decimal angle from one mode to another. For th e natu ra l log, press " In" ; Calcul ate percentage To find th e sq uare root of a it takes t he log of the valu e problems by si mply pressing number, key in the number, displayed in base e (2.718 ., . ), "% " after entering the percent then press th e Gold Key, then Fo r the common log , press the Gold Key, value. There's no need to convert the key for "vx." The "x" in th e symbol then the key for " Iog" ; it takes the log of pe rcents to their decimal equivalent! represents the currently di splayed value, the value displayed in base 10. Press the Gold Key , then ., 6. %" to so you can calculate its square root instantly compute the percent difference without re-entering the number. To between two numbers. You can also square a number cu rrently displayed , q ui ckly calculate the net amou nt, by just press " x 2 ". pressing "+" o r ;'- " after figu ri ng t he percentage. Raise a positive nu mber (an integer or a The "Enter EX ponent" key decimal) to any power by sim ply entering EEX lets you key in numbers the number, then pressing the Gold Key To calculate reciprocals, key having exponent s-either and "yX". You can extend the answer up in the num ber, t hen press positive or negative. You may also save to nine decimal places. "1 I x." The "x" in the symbo l t ime in certain calculations by keying in Pressing the " ex" key (na tu ral antilog) repres ents the currently displ ayed value, exact powers of 10. raises e (2.718. . ) to the power of the so you can calculate the reciprocal of a value displayed. Pressing the Gold Key , value in a previous calcu lation without - .-.- ~,- ..... ~ then the key for "lOx" (common antilog) fe-enteri ng the number. -- - , -. - - ;- raises 10 to the power of the value -. - .. displayed.

When a functi on is performed, The HP-45 featu res an easy-la-see o the last input argument of the li ght-emitting diode display, in bright red. G calcul ati on is automatically All digits appear as continuous-not stored in the "LAST x" 'register, By broken- solid li nes. pressing the Gold Key , then t he key for " LAST x", you can recall the argument to correct an error o r perfo rm another operation using the same numbers.

You are able to key in negative numbers by first entering a These data control positive number, then pressing ENTER + keys let you load and the "CHange Si gn" key. O r you can ..._~~ ___'" man ipulate data. You change the sign of any nu mber already can: load constant valu es , so you can displ ayed by pressing this key. use t he num bers repeatedly ; store numbers for deferred calculations; display numbers previously saved ; reverse the order of the numbers saved. Used with the 4-register o perational stack and t he 9 addressable registers, they hel p ma ke the HP-45 unsurpassed in pre-programmed scientifi c calculators

For further information, contact your nearest Hewlett-Packard outlet. Or call Customer Service at (408) 996-0100 for the location nearest you. lsi

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0 Probl em: 60 To find [he r esu lting , magnitude and angle \ 0 representing the sum \ \ 30 \ of the 2 vectors, V I \ \ and V7., \ \ \ \ I x

Only the HP-45 enables you to solve complex problems this in seconds by pr s q uta w ey

To obtain magnitude of resulting vector. To calculate first vector . .. 1. Recall sums of x and y components I~ +I 1. Enter first angle 0 0 ENTER t 2. Convert to po lar III 2. Enter first magnitude Q:J Magnitude: 3. Convert to rectangular ~_ To obtain angle of resulting vector . .. 4 Accumulate x and y components (~ + ) Exchange x and y IX':-Y To calculate second vector .. . Angle: 1. Enter second angle (}] 0 ENTER t For additional accuracy ... 2. Enter second magnitude 0 Specify the number of digits iii 0 3. Convert to rectangular ail To obtain : 4. Accumulate x and y components (~ +) rog at '11 JI Arithmetic: add , subtract, mu ltiply, divide, The square root, square. Trigonometric (deci mal degrees, radians or grads): sine, arc sine, cosine. arc cosine, HP-45 tangent, arc tangent, rectangular/ polar coordinate conversi ons, vector arithmetic, conversions between operating mode and degrees/ minutes/ seconds. Advanced Logarithmic: natural logarithm, natural antilogarithm, common logarithm, common antilogarithm. • Statistical: mean , standard deviation , SCientific sum-of-the-squares , factorial. Other: yX , 1 lx, 7T, % I b. % , metric/ U.S. unit conversion constants, register ari thmetic, ocke data storage and positioning functions. u(t:;- 14 >I:. I 1 Display : Up to 10 significant digits plus culator 2-digit exponent and appropriate signs Dynamic range : 10-99 to 1099 Four-register operational stack Nine addressable memory registers "LAST x l> register for error correction Automatic decimal point positioning Selective round-off; range: 0-9 decimal places • Two display modes: fixed point and scientific • Indicators for improper operations and low battery condition Operates on rechargeable batteries or AC Solid state electronics Light-emitting diode (LED) display Tactile feedback keyboard Compact, contoured case

'0 E;C AC : 1150r230V, ± 10%,50t0 60 Hz, 5watts. Battery : 500 mw derived from nickel-cadmium rechargeable battery pack. rI g It HP-45: 9 ounces (255 g) Recharger: 5 ounces (142 g) Shipping Wei gh t: 2 lbs. approx. (900 g)

HP-45 Advanced Scientific Pocket Calculator n JCI :;.101 Sallery pack that under normal use provides 3 to 5 hours 01 aperahon '15/230 V AC adapter I recharger that lets you o perate the HP-45 on Length: 5.8 inches (14.7 cm) AC while the battery pack is recharging Width: 3.2 inches (8.1 cm) Sot! carrying case Height: 0.7 to 1.3 inches (1.8 to 3.3 cm) Safety travel case that holds HP-45, recharger , Own er 's Handboo k, Quick Reference Guide and soH case U It:;: ~ J Illustrated Owner's Handbook Quick Reference Guide 32° F to 122° F (O OC to 50° C) Self-adhesive owner's name tags Optional accessories. Secullty cradle ; hard leather field carrying case , spare battery pack and holder. (Details sent with HP-45.)

The HP-45 is warranted against defecls in materials an d workmanship for one (1l year f rom dale of delive ry, DUring the warranty period, Hewlett-Packard will repair or, at its option, replace components that HEWLETT ~ PACKARD prove to be defective when the calculator is returned, shippi ng prepaid, to a Hewlett-Packard Customer Service Facility . This warranty does not apply if the HP-45 has been damaged by Sales and service 110m 172 oflices in 65 countries accident Of misuse or as a result of service or modification by any person other than at an authorized Hewlett-Packard Customer Service Facility. 19310 Prunerldge Avenue . Cupertino, California 95014 No other warranty is expressed or implied. Hewlelt-Packard is not liable for consequential damage. HewleH-Packard reserves the rig ht to make changes In ma tenals and specifications without notice.

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