Fmmturlnp, thrr twr: Important HP-41C Information ............ 2 Fitting 67/97 Programs Into the HP-41C ... 3 "25 Words" (More or Lessl) ............... 5 Russian Calculators?. .................... 7 Library Corner. .......................... 8 About Batteries. ..Continued ............ 9 Accessories Hot Line. ................... 10 Indirect Addressing ..................... 10 Book Reviews .......................... 12 We Get Letters ......................... 12 I Mmdl 1BIOVd. 4 No. 1 HEWLETT PACKARD HP Key Notes Have You Seen the the user to create and to display custom Also, it's easy to enhance the system's HP-867 characters such as symbols, logos, etc. capability by adding powerful HP periph- The bidirectional printer is built-in and erals like a high-speed full-width line printer, How often have you wished, while you whisperquiet. Yet with a single command it full-size plotter, or flexibledisc drive? You put your programmable calculator in your will transform display contents into printed . can aIso streamline your problem-solving pocket or briefcase in preparation to leave COPY. with HP Application Pacs that offer pre- the office at the end of a day, that it was a Magnetic tape cartridges supply the programmed solutions in a wide variety of computer? Many, many times, well bet! HP-85 with highquality digital tape storage. disciplines on prerecorded magnetic tape Well, now you can have a real computer High search speed and data access rates cartridges. that you can use almost anywhere, anytime. coupled with automatic tape directories give But don't just look at the picture; go In case you haven't heard, Hewlett- the HP-85 superior storage capabilities. experience the HP-85 for yourself. However, Packard's Corvallis Division now makes a Each magnetic tape cartridge can hold up to please note: The HP-85 is not available by personal computer for professionals. It's the 217K bytes in up to 42 separate files, plus a mnildrder from Hewlett-Packard. In the HP-85, a complete computer system de- "catalog"command tells you exactly what is U.S., call 800-547-3400 (in Oregon call 758- signed for individual use. In the lab, on your on any tape. And you can double RAM 1010) for the HP-85 Dealer nearest you, or desk, or in your study, the HP-85 provides capacity to 32K or expand ROM firmware call your local HP Sales Office. Outside of professional computing power when and from 32K to 80K with optional modules the US., pIease contact the dealer or HP where it's needed. That means no more that plug right into the HP-85. Sales Office nearest you. waiting for data to be processed and re- *Contact your local dealer or HPsales represenfarivefor turned. A big plus for the professional. availability information. Comparable in size to a portable type- writer, the HP-85 boasts a completely inte- grated keyboard, CRT display, thermal printer, magnetic tape unit, and operating system. And at 20 pounds, it offers the added convenience of portability-mreporf- ability. The HP-85 contains many features not ordinarily found in a personal computing tool. The HP-85's extended BASIC language is easy to use, yet with more than 140 commands and statements, it provides an extremely powerful problem-solving ability. In addition to a typewriter-like keyset, the keyboard has a numeric keypad, system control and editing keys, and eight "soft" keys that may be defined by the user to select optional courses for program exe- cution. A highly.detailed graphics system is a standard part of the HP-85. And because the 16 graphics statements are integrated into the HP-858 BASIC language, you can draw graphs, label axes, plot data, and control the graphics display either from the keyboard or in programs. Userdefined graphics, another graphics feature, allows Hewlett-Packard's New HP-86 Personal Computer for Professionals HP Computer Museum www.hpmuseum.net For research and education purposes only. conditions that can traumatize the cal- We Have a N ew N u Ill ber! HP-41C FINANCIAL DECISIONS PAC culator. 1. In the FINANCE 1B Module, the Of course, all causes of disruption should After April 1, 1980, you can place toll- prompts for the Modified Internal Rate of be avoided, but should disruption occur, the free telephone calls directly to the factory, Return (MIRR) program were inadvertently most common symptom is a loss of keyboard providing the call .originates in the Con- reversed. When SAFE RATE=? is dis- 7, control of the calculator. The HP41C has tinental U.S. played, key in the risk rate. Likewise, when # been designed to allow recovery from these To give you better and faster service, RISK RATE=? is displayed, key in the safe conditions. The procedure for resetting the we've moved our toll-free number from rate. In the example on page 25 of the calculator is to simply remove the battery Nevada to Corvallis, Oregon-the home of applications book, the risk rate is 8% and Hewlett-Packard calculators. This new pack and replace it again immediately. This the safe rate is 10%. will reset the HP4IC without causing a service will be available Monday through 2. The "Bonds" program does not cor- MEMORY LOST condition (unless the Friday of each week, from 7:00 a.m. to 7:00 rectly calculate the yield of a short-term trauma itself was great enough :o cause a p.m., Pacific Standard Time. bond. When you wish to determine the yield MEMORY LOST condition). After several This new service consists of direct phone of a bond held for one full coupon period or attempts, if this procedure fails to reset the lines to the factory, with special operators less, you must do the following: calculator, work through the service pro- assigned to answer your calls, which will a. Store either the call price or 100 in cedure in the HP-41 C Owner> Handbook terminate at these phones. Calls on the toll- register 19. and Programming Guide. page 242. free number can NOT be transferred to b. CF22 The next three paragraphs might be added other phones in the factory. This new service c. Press to calculatC the yield. on blank pages 2531254 in your present will be available for: HP-67/97 M.E. PAC handbook. 1. Locating HP Dealers and/or Full-Line Program MEI-09A. "Helical Spring Program Mode Power-Off. If you turn Accessory Dealers. Design," has been found to contain an off the HP-41C (or if it turns off auto- 2. Product or literature inquiries. error. Lines 147 (ST0 8) and 148 (GTOA) matically) while the unit is in PRGM (pro- 3. Service information. should be deleted and replaced with GT05. gram) mode, you should toggle into and 4. Status on new-product availability. The bottom of page 09-1 1 should be changed back out of PRGM mode again when you 5. Ordering calculators, accessories, or to: resume operation. This ensures that changes software. Sure enough, insufficient clearance. Try made to programs in previous editing ses- The service will NOT be available for the smaller wire.. sions will be compiled by the HP-41C answering technical questions nor for appli- ,035 R/SJ ---- 19.6600*** (Coils) cations assistance. Those functions will be system. -- + + - + + + 186.303 *** (S,, psi) handled, as before (not toll-free), by the Program Clearing Restrictions. When you - ++ + + - - 5.000 00 (Code) wish to clear very long programs (longer Customer Support department. Since the design checks out, calculate the than 233 lines), you must set the HP 82143A Oh, yes ... the number is 800-547-3400, dimensions: Printer (if present) to MAN (manual) mode excluding Alaska and Hawaii (in Oregon IEI 1.563 00*** (Lr) when you execute the CLP function. Pro- call 758-1010). 758.0 -03*** (L,) ) grams longer than 1089 lines must be cleared 190.0 -03*** (D) using DEL nnn. (For example, to clear a Software Changes 225.0 -03*** (OD) 1980-line program, execute DEL and press To receive a revised card (MEI-09B), you 980.) Refer to the HP-4IC OwnerS If you have early copies of the following must mail your old card to: HP Service Handbook and Programming Guide, page two HP41C or HP-67/97 Application Pacs, Department; P. 0. Box 999; Corvallis, 135, for more information about long you should make the following corrections Oregon 97330. This new card will be avail- programs. in your copy. Later copies have an adden- able on or after June 2, 1980. ALPHA String Testing Restrictions. If dum card, or the corrections have been HP-67/97 BUSINESS DECISIONS PAC you are testing two ALPHA strings that incorporated in the finished product. Program BDI-I I A, "Savings- were originally longer than six characters HPdlC STRESS ANALYSIS PAC and Compouding Periods Different From Pay- (when created in the ALPHA-register), then HP-41C STRUCTURAL ANALYSIS PAC ment Periods," has been found to contain you must perform the following procedure In the program, "Simply Supported Con- an error. Step 007 (FO?) should be changed to ensure proper string truncation and test tinuous Beams" (version 1 A*), an error was to SFO, and CFO should be inserted between results. Strings can only be tested with the found in the "FIXR" option. If you have a steps 005 and 006. or XfY? functions. beam with a fixed right end, follow the To receive a revised card (BDI-I I B), you 1. Store the first string into a register using procedure described in the user instructions must mail your oId card to: HP Service ASTO nn. If the string is not longer than up to the point of executing "MOMENTS." Department; P.