Hewlett Packard Journal Technical Information from the Laboratories of Hewlett-Packard Company Calculator-Related Articles data courtesy of Rick Furr, rfurr@vt.edu ------------------------------------------------------------ June 1972 Vol. 23 No. 10 -35A pages 2-9 The 'Powerful Pocketful': An Electronic Calculator Challenges the Slide Rule - This 9 ounce, battery-powered scientific calculator, small enough to fit in a shirt pocket, has logarithmic, trigonometric, and exponential functions and computes answers to 10 significant digits. by T.M. Whitney, F. Rode' and C.C Tung page 5 Operational Stacks and Reverse Polish Notation page 7 How the HP-35 Compares with the Slide Rule pages 10-11 Algorithms and Accuracy in the HP-35 - A lot goes into that little machine when it's computing a transcendental function. by D.S. Cochran pages 12-13 Packaging the Pocket Calculator - The industrial design of the HP-35 was of primary importance, often taking precedence over electrical considerations. by Edward T. Liljenwall ------------------------------------------------------------ May 1973 Vol. 24 No. 9 -80A -9866A pages 2-8 A Pocket-Sized Answer Machine for Business and Finance - This new 9 ounce, battery-powered calculator replaces most commonly used financial tables, such as compound interest, annuities, and bonds. It's also a 200 year calendar. by W.L. Crowley and F. Rode' page 5 Examples of HP-80 Solutions page 8 Appendix A -- A Typical HP-80 Algorithm Appendix B -- Principal HP-80 Equations pages 18-24 A Quiet, Low-Cost, High-Speed Line Printer - This thermal printer writes 80 column lines at 250 lines per minute. Developed primarily for the 9830A Calculator, it's a general-purpose printer that's easily interfaced to a variety of controllers. by Dick B. Barney and James R. Drehle page 23 The Thermal Printhead Story ------------------------------------------------------------ May 1974 Vol. 25 No. 9 -65A pages 2-6 The "Personal Computer:" A Fully Programmable Pocket Calculator - This 11 ounce battery-powered marvel has the computing power of an advanced scientific pocket calculator and is programmable as well, so it can adapt to any number of specialized uses. by C.C. Tung page 4 Self Clocking Two-Track Recording Technique pages 8-14 Programming the Personal Computer - Wherein are revealed the functions of the keys, how problems are solved, and a bit of what goes on inside. by R.K. Stockwell pages 15-17 Designing a Tiny Magnetic Card Reader - Here's how it was designed and how it works. by R.B. Taggart pages 18-20 Testing the HP-65 Logic Board - The board and it's automatic test system are designed for rapid production testing and troubleshooting. by Kenneth W. Peterson ------------------------------------------------------------ November 1975 Vol. 27 No. 3 -21A -22A -25A pages 2-7 Three New Pocket Calculators: Smaller, Less Costly, More Powerful - HP's second-generation pocket calculator family now includes a basic scientific model, a programmable scientific model, and a business model. by Randall B. Neff and Lynn Tillman page 6 An Example of HP-25 Programming pages 8-12 Inside the New Pocket Calculators - The HP-21 type of calculator isn't just a stripped-down version of older HP pocket calculators, but an entirely new design. by Michael J. Cook, George M. Fitcher, and Richard E. Whicker page 10 Packaging the New Pocket Calculators by Thomas A. Hender ------------------------------------------------------------ May 1976 Vol. 27 No. 9 -2644A pages 2-15 New CRT Terminal Has Magnetic Tape Storage for Expanded Capability - Two built-in tape drives make the terminal a stand-alone data station. User benefits are reduced on-line time costs, lower line charges in remote operations, and greatly lessened demand on computer resources. by Robert G. Norman, Richard L. Smith, and Louis A. Witkin pages 6-7 Mini Data Cartridge: A Convincing Alternative for Low-Cost, Removable Storage by Alan J. Richards (Calculator Products Division) page 12 Mini-Cartridge Drive Mechanism ------------------------------------------------------------ June 1976 Vol. 27 No. 10 -9815A -9825A pages 2-14 Third-Generation Programmable Calculator Has Computer-Like Capabilities - A new programming language, HPL, helps the user apply the many technological advances in the personal computing machine to a wide variety of computation and control problems. by Donald E. Morris, Chris J. Christopher, Geoffrey W. Chance, and Dick B. Barney page 5 9825a Product Design page 13 9825A Cartridge Tape Unit pages 15-18 High-Performance NMOS LSI Processor by William D. Eads, David S. MaitLand pages 24-32 Mid-range Calculator Delivers More Power at Lower Cost - Its design takes advantage of the latest technology, principally a single-chip microprocessor. by Douglas M. Clifford, F. Timothy Hickenlooper, and A. Craig Mortensen ------------------------------------------------------------ November 1976 Vol. 28 No. 3 -67A -97A pages 2-8 A Pair of Program-Compatible Personal Programmable Calculators - One is a small, portable printing calculator and the other is a hand-held version without a printer. Both versions feature a "smart" magnetic card reader, and each can run the other's programs. by Peter D. Dickinson and William E. Egbert pages 9-18 Programmable Scientific Calculator Has Built-In Printer - It's the first of a new generation of small, portable, printing calculators that operate on rechargeable batteries or line current. by Bernard E. Musch and Robert B. Taggart pages 16-17 The New Accuracy: Making 2^3 = 8 by Dennis W. Harms ------------------------------------------------------------ May 1977 Vol. 28 No. 9 Algorithms I pages 22-24 Personal Calculator Algorithms I: Square Roots - A detailed explanation of the algorithm used by HP hand-held calculators to compute square roots. by William E. Egbert ------------------------------------------------------------ June 1977 Vol. 28 No. 10 Algorithms II pages 17-20 Personal Calculator Algorithms II: Trigonometric Functions - A detailed explanation of the algorithms used by HP hand-held calculators to compute sine, cosine, and tangent. by William E. Egbert ------------------------------------------------------------ October 1977 Vol. 29 No. 2 -92A pages 22-28 Printing Financial Calculator Sets New Standards for Accuracy and Capability - This briefcase-portable calculator has several new functions and is exceptionally easy to use. Most important, the user need not be concerned about questions of accuracy or operating limits. by Roy E. Martin ------------------------------------------------------------ November 1977 Vol. 29 No. 3 Algorithms III pages 22-23 Personal Calculator Algorithms III: Inverse Trigonometric Functions - A detailed description of the algorithms used in Hewlett-Packard hand-held calculators to compute arc sine, arc cosine, and arc tangent. by William E. Egbert pages 26-32 An NMOS Process for High-Performance LSI Circuits - Fast 16-bit microprocessors, 16k read-only memories, and a variety of special-purpose random-logic chips are the result of an NMOS process that produces high-performance large-scale integrated circuits. By Joseph E. DeWeese and Thomas R. Ligon pages 30-31 Application of the NMOS-II Process ------------------------------------------------------------ December 1977 Vol. 29 No. 4 -01A pages 2-10 Wrist Instrument Opens New Dimension in Personal Information - It's a digital electronic wristwatch, a personal calculator, an alarm clock, a stopwatch, a timer, and a 200-year calendar, and its functions can interact to produce previously unavailable results. by Andre' F. Marion, Edward A. Heinsen, Robert Chin, and Ben E. Helmso ------------------------------------------------------------ April 1978 Vol. 29 No. 8 Algorithms IV pages 2-10 A Highly Integrated Desktop Computer System - System 45, the new flagship of the HP 9800 Series, gives the user unprecedented power in a single compact unit. It offers advanced capabilities in program documentation. string and matrix operations, subprograms, program linking, tracing, formatted output, mass storage, and graphics by William D. Eads and Jack M. Walden pages 11-21 System 45 Hardware Design by John C. Keith, Louis T. Schulte, and Ansel K. Vogen pages 14-15 System 45 Product Design by Ray J. Cozzens page 20 System 45 Tape Control System by Richard Kochis page 21 System 45 Power Supply by Dick B. Barney pages 22-28 Advanced Thermal Page Printer Has High-Resolution Graphics Capability - This optional System 45 built-in peripheral quietly outputs program listings or hard copies of anything on the CRT display. by Ray J. Cozzens pages 25-26 New Printhead Technology Developed for System 45 by Eugene R. Zeller pages 29-32 Personal Calculator Algorithms IV: Logarithmic Functions - A detailed description of the algorithms used in Hewlett-Packard hand-held calculators to compute logarithms. by William E. Egbert ------------------------------------------------------------ May 1979 Vol 30 No. 5 -9835 pages 11-12 Extending Possibilities in Desktop Computing - This midrange computer's large memory capacity, two languages (enhanced BASIC and assembly language). low radiated interference, and powerful input/output facilities suit it especially well for computation, control, and data acquisition applications. by Sandy L. Chumbley pages 13-15 Processor Enhancements Expand Memory by Damon R. Ujvarosy and Dyke T. Shaffer pages 16-17 Designing to Meet Electromagnetic Interface Requirements by John C. Backer pages 18-20 Assembly Programming Capability in a Desktop Computer by Robery M. Hallissy ------------------------------------------------------------ December 1979 Vol. 30 No. 12 -34C pages 20-26 Personal Calculator Has Key to Solve Any Equation f(x) = 0 - The HP-34C is the first handheld calculator to have a built-in numerical equation solver. That's why one of its keys is labeled SOLVE. by William M. Kahan page 23 Why is Equation Solving Provably Impossible? "The merely Difficult, we do immediately; the impossible will take slightly longer." Old British naval maxim. ------------------------------------------------------------ March 1980 Vol. 31 No. 3 -41C pages 3-12 Powerful Personal Calculator System Sets New Standards - Customize this advanced new handheld calculator by plugging in extra memory, a magnetic card reader, a printer, and application modules. You can reconfigure the keyboard, too. by Bernard E. Musch, John J. Wong, and David R. Conklin page 5 Using USER Mode page 7 Packaging the HP-41C - The liquid crystal display made it interesting for the package designers. by Gerald W. Steiger pages 12-15 Card Reader Offers Compatibility and Expanded Capability - More powerful and useful than its predecessors, the HP-41C card reader can read cards written by earlier HP personal calculators. by David J. Lowe and Patrick V. Boyd pages 15-20 Evolutionary Printer Provides Significantly Better Performance - As the power of a calculator increases, so must the abilities of its printer. by Roger D. Quick and Donald L. Morris pages 20-22 Bulk CMOS Technology for the HP-41C - This integrated circuit process has many characteristics that contribute to long battery life in a calculator. by Norman L. Johnson and Vijay V. Marathe pages 22-24 The First HP Liquid Crystal Display - LCD advantages include low voltage and power requirements and good visibility in strong light. by Craig Maze pages 25-26 High Density and Low Cost with Printed Hybrid Technology - Silicon integrated circuit chips are mounted directly onto printed circuit boards to save space and cost. by James H. Fleming and Robert N. Low ------------------------------------------------------------ July 1980 Vol. 31 No. 7 -85 pages 3-6 A New World of Personal/Professional Computation - Now, an inexpensive computer system with integral display, mass storage, hard copy, and graphics capability is available for personal use by the technical professional or first-time computer user. by Todd R. Lynch pages 7-13 Adding I/O Capability to the HP-85 - With the implementation of I/O features, the capabilities of a self contained personal computer system ate expandable to control instruments, add on more powerful peripherals, and even talk to other computers. by John H. Nairn, Tim I. Mikkelsen, and David J. Sweetser page 13 Using HP-85 I/O Capabilities by Tim Mikkelsen pages 14-18 A Compact Tape Transport Subassembly Designed for Reliability and Low Cost by Douglas J. Collins and Brian G. Spreadbury pages 19-20 A High-Quality CRT Display for a Portable Computer by James F. Bausch pages 22-25 A Compact Thermal Printer Designed for Integration into a Personal Computer by Clement C. Lo and Ronald W. Keil page 24 An Efficient Power Supply for the HP-85 by Jim Bausch pages 26-27 Enhanced BASIC Language for a Personal Computer by Nelson A. Mills, Homer C. Russell, and Kent R. Henscheid page 28 Random Number Generation by Homer Russell page 30 Fast Integer Processing by Homer Russell ------------------------------------------------------------ August 1980 Vol. 31 No. 8 -34C pages 23-32 Handheld Calculator Evaluates Integrals - The HP-34C is the first handheld calculator to have a key that performs numerical integration almost automatically. It may change your attitude towards what used to be regarded as a dreary tedious task. by William M. Kahan ------------------------------------------------------------ January 1981 Vol. 32 No. 1 Bar Code HEDS3000 82153A pages 3-10 Handheld Scanner Makes Reading Bar Codes Easy and Inexpensive - This lightweight wand contains the light source, reflected-light sensor, and digital signal shaping circuitry needed for scanning bar-code patterns reliably. by John J. Uebbing, Donald L Lubin, and Edward G. Weaver, Jr. pages 7-8 What is a Bar Code? pages 11-14 Reading Bar Codes for the HP-41C Programmable Calculator - A new accesory for HP's most powerful handheld calculator quickly enters data and programs from printed bar code. by David R. Conklin and Thomas L. Revere III ------------------------------------------------------------ December 1982 Vol. 33 No. 12 82184A pages 16-18 Controlling a Graphics Plotter with a Handheld Programmable Calculator - The plotter is the 7470A. The calculator is the HP-41C. by Robert M. Miller and Randy A. Coverstone ------------------------------------------------------------ January 1983 Vol. 34 No. 1 82160A -11C pages 3-10 HP-IL: A Low-Cost Digital Interface for Portable Applications - The Hewlett-Packard Interface Loop is a bit-serial interface bringing many capabilities formerly reserved for much larger computer systems to the growing repertoire of portable computers and handheld calculators. by Roger D. Quick and Steven L. Harper page 7 How Fast is the HP-IL? by Steve Harper page 8 HP-IL Interconnect System by James H. Fleming pages 11-16 The Electronics Interface for the Hewlett-Packard Interface Loop - This low-cost, low power serial interface uses two-wire cables, a three-level code, a CMOS IC, and small pulse transformers. by Carl J. Landsness pages 16-22 A CMOS Integrated Circuit for the HP-IL Interface - This IC, available to OEM designers, makes it easy to add HP-IL capability to a product. by Steven L. Harper pages 23-29 CMOSC: Low-Power Technology for Personal Computers - To meet the growing need for integrated circuits with more functions and lower power consumption, an improved CMOS process has been developed at HP's Corvallis Division. by David E. Hackleman, Norman L. Johnson, Craig S. Lage, John J. Vietor and Robert L. Tillman page 28 What is Latch-Up? ------------------------------------------------------------ February 1983 Vol. 34 No. 2 44468A DA/C Pac ROM pages 16-19 Low Cost Instrument Control: A New ROM for the HP-41 Handheld Computers - Now HP-41 users can control instruments to measure and analyze a variety of physical parameters on the bench or in the field. by David L. Wolpert ------------------------------------------------------------ May 1983 Vol. 34 No. 5 -82161 Series-10 -15C -16C pages 17-14 Compact Digital Cassette Drive for Low-Cost Mass Storage - This portable battery-operated unit uses minicassettes to store programs and data inexpensively for HP-IL systems. by William A. Buskirk, Charles W. Gilson, and David J. Shelley pages 25-35 Scientific Pocket Calculator Extends Range of Built in Functions - Matrix operations, complex number functions, integration, and equation solving are only some of the numerous preprogrammed capabilities of HP's latest scientific calculator, the HP-15C. by Eric A. Evett, Paul J. McClellan, and Joseph P. Tanzini pages 36-40 A Pocket Calculator for Computer Science Professionals - This compact, yet powerful pocket calculator is designed for technical professionals working in computer science and digital electronics. Boolean operations and bit manipulation are some of its capabilities. by Eric A. Evett page 37 Real (Floating-Point) Format pages 38-39 Using the HP-16C ------------------------------------------------------------ June 1983 Vol. 34 No. 6 -75 -82168A pages 3-4 A Portable Computer for Field, Office, or Bench Applications - This lightweight, battery-powered computer has features that make it an ideal tool for the traveling professional. by Donald E. Morris, Anthony S. Ridolfo, and Donals L. Morris pages 5-7 A Telephone Interface for HP-IL Controllers by Sidnee Snell and Brian G. Spreadbury pages 8-9 HP-IL and the HP-75 Portable Computer by Dennis C. York pages 10-14 High-Capacity Electronics Systems for a Compact, Battery-Operated Computer by Elizabeth Brooks, Robert J. Livengood, Rex C. Smith, and Timothy F. Myers page 12 Packaging a Portable Computer by Lee S. Mason and Gary G. Lutnesky page 14 Electrostatic Discharge Protection for the HP-75 by Gary J. May pages 15-19 Handpulled Magnetic Card, Mass Storage System for a Portable Computer by Kenneth R. Hoecker, James R. Schwartz, Francis A. Young, and Dean R. Johnson pages 20-23 The HP-75 Production Card Recorder by David B. Patton pages 24-26 Integration of the HP-75's Handpulled Card Reader Electronics in CMOS by Thomas J. Arnold and Billy E. Thayer ------------------------------------------------------------ July 1984 Vol. 35 No. 7 -71B pages 3-10 A New Handheld Computer for Technical Professionals - This small computational tool functions both as a BASIC-programmable computer and as an advanced scientific calculator. Equipped with the appropriate modules, it can control instruments, store and retrieve data and programs, perform complex number and matrix calculations, or be used for software development. by Susan L. Wechsler pages 6-7 Calculator Mode for a Handheld Computer by Stephen Abell pages 8-9 HP-IL Interface Module for the HP-71B Computer by Nathan Zelle and Jackie Hunt pages 10-13 Soft Configuration Enhances Flexibility of Handheld Computer Memory - This technique allows the CPU to reassign a device's address space and lets the user dedicate portions of RAM for independent use. by Nathan Meyers pages 14-17 Custom CMOS Architecture for a Handheld Computer - A 4-bit CPU provides a 512K-byte address space and uses a 64-bit internal word size. by James P. Dickie pages 17-21 Packaging the HP-71B Handheld Computer - An innovative combination of standard manufacturing techniques allows a very compact design. by Thomas B. Lindberg pages 22-24 Module Adds Curve-Fitting and Optimization Capabilities to the HP-71B - This plug-in ROM can fit data to a variety of built-in functions or, given a function of up to 20 variables, finds values of local minima or maxima. by Stanley M. Blascow, Jr. and James A. Donnelly page 23 An Optimization Example pages 25-36 ROM Extends Numerical Function Set of Handheld Computer - Full use of complex variables, integration, matrix algebra, and polynomial root finding are some of the capabilities provided by this plug-in module. by Laurence W. Grodd and Charles M. Patton pages 37-40 Plug-In Module Adds FORTH Language and Assembler to a Handheld Computer - This ROM adds an alternative programming language and the ability to define new BASIC keywords or FORTH primitives. by Robert M. Miller ------------------------------------------------------------ March 1987 Vol. 38 No. 3 Calculus pages 38-40 Viewpoints - A Viewpoint on Calculus - Presented to the Mathematics Panel of the American Association for the Advancement of Science on April 5, 1986. Should the infinitesimal calculus be taught at all? by Zvonko Fazarinc ------------------------------------------------------------ June 1987 Vol. 38 No. 6 Calculus pages 22-23 Reader Forum - response by Alain Maruari ------------------------------------------------------------ August 1987 Vol. 38 No. 8 -18C -28C pages 4-10 A Handheld Business Consultant - The latest model in HP's line of calculators designed for business and financial applications features a menu-driven user interface for selecting any of its many built-in functions or custom equations entered by the user. by Susan L. Wechsler page 7 Cash Flow Analysis Using the HP-18C pages 8-9 The Equation Solver Menu in the HP-18C by Paul Swadener page 10 History and Inspiration of the Solve Interface by Chris M. Bunsen pages 11-17 An Evolutionary RPN Calculator for Technical Professionals - Symbolic algebraic entry, an indefinite operation stack size, and a variety of data types are some of the advancements in HP's latest scientific calculator. by William C. Wickes page 15 HP-28C Plotting by Gabe L. Einstein pages 17-20 Mechanical Design of the HP-18C and HP-28C Handheld Calculators - A folding case and two keyboards enhance functionality while reducing label clutter. by Judith A. Layman and Mark A. Smith pages 21-25 Symbolic Computation for Handheld Calculators - A special operating system was developed to allow processing of a variety of data types from simple numbers to alphanumeric expressions. by Charles M. Patton pages 25-30 A Multichip Hybrid Printed Circuit Board for Advanced Handheld Calculators - All of the electronics and the display are mounted on a single 1.5-inch-by-3-inch board. by Bruce R. Hauge, Robert E. Dunlap, Cornelis D. Hoekstra, Chong Num Kwee, and Paul R. Van Loan pages 30-34 An Equation Solver for a Handheld Calculator - A combination of direct and iterative solving algorithms is used. by Paul J. McClellan pages 34-40 Electronic Design of An Advanced Technical Handheld Calculator - Custom CPU, ROM, and display driver ICs are key elements. by Prestin D. Brown, Gregory J. May, and Megha Shyam ------------------------------------------------------------ October 1987 Vol. 38 No. 10 82240A pages 16-21 An Infrared Link for Low-Cost Calculators and Printers - Since the sender on this unidirectional link gets no feedback from the receiver, allowances must be made for worst-case conditions. by Steven L. Harper, Robert S. Worsley, and Bruce A. Stephens pages 21-23 A Low-Cost Wireless Portable Printer - Based on a unidirectional infrared transmission path, this small thermal printer can provide hard copy of HP-18C and HP-28C calculations. by David L. Smith and Masahiko Muranami pages 24-27 Manufacturing State-of-the-Art Handheld Calculators - Robots and special fixturing help keep costs down. by Richard W. Riper ------------------------------------------------------------ June 1991 Vol. 42 No. 3 48S/SX pages 6-12 The HP 48SX Scientific Expandable Calculator: Innovation and Evolution - Many of the features of this advanced handheld calculator have evolved from its predecessors, the HP 41C and HP 28S. Others, such as its unit management system, are new. by William C. Wickes and Charles M. Patton pages 13-21 HP 48SX Interfaces and Applications - The HP 48SX scientific expandable calculator provides support for multiple applications, both bulit-in and externally developed, with customized user interfaces. The Equation-Writer and interactive plotting are two of the built-in applications. by Ted W. Beers, Diana K. Byrne, Gabe L. Eisenstein, Robert W. Jones and Patrick J. Megowan pages 22-25 HP Solve Equation Library Application Card - The card contains a library of 315 equations, the periodic table of the elements, a constants library, a multiple equation solver, a finance application, and engineering utilities. by Eric L. Vogel pages 25-34 Hardware Design of the HP 48SX Scientific Expandable Calculator - Leveraging an earlier design resulted in prototypes with 90% production tooled parts only nine months after the start of the project. The HP 48SX includes an 8-line-by-22-character super-twist nematic liquid crystal display, two expansion ports for ROM or battery-backed RAM cards, and two I/O ports: RS-232 and infrared. by Mark A. Smith, Lester S. Moore, Preston D. Brown, James P. Dickie, David L. Smith, Thomas B. Lindberg, and M. Jack Muranami pages 27-28 Industrial Design of the HP 48SX Calculator by Michael Derocher page 30 HP 48SX Custom Integrated Circuit by Preston D. Brown pages 32-33 Mechanical Design of the HP 48SX Memory Card and Memory Card Connector by M. Jack Muranami pages 35-40 The HP 48SX Calculator Input/Output System - An RS-232 link allows communications with personal computers. An infrared link provides for printing and for two-way calculator-to-calculator communication. by Steven L. Harper and Robert S. Worsley pages 40-43 Manufacturing the HP 48SX Calculator - Sharing manufacturing processes with earlier, simpler calculators shortened development time and improves manufacturing efficiency. The HP 48SX and the simpler calculators also share the same production line at the same time - a concept known as coproduction. by Richard W. Riper ------------------------------------------------------------ August 1994 Vol. 45 No. 4 48G/GX pages 6-22 An Advanced Scientific Graphing Calculator - The HP 48G/GX combines an easy-to-learn graphical user interface with advanced mathematics and engineering functionality, expanded memory capability, and seven new plot types. by Diana K. Byrne, Charles M. Patton, David Arnett, Ted W. Beers, and Paul J. McClellan page 20 User Versions of Interface Tools ------------------------------------------------------------ June 1996 Vol. 47 No. 3 38G 100LX* 200LX* OmniBook 5000 pages 38-44 A Full-Featured Pentium PCI-Based Notebook Computer - The HP OmniBook 5000 computer takes advantage of new technologies such as mobile Pentium, PCI, plug and play, lithium-ion batteries, and hot docking to give users the same capabilities as their desktop computers by Timothy F. Myers page 42 Flyback Charger Circuit pages 45-58 A Graphing Calculator for Mathematics and Science Classes - The HP38G calculator allows teachers to direct students and keep them focused while they explore mathematical and scientific concepts. It features aplets, which are small applications that focus on a particular area of the curriculum and can be easily distributed from the teacher's calculator to the students'. by Ted W. Beers, Diana K. Byrne, James A. Donnelly, Robert W. Jones, and Feng Yuan. page 54 Distributed Software Team pages 59-63 Creating HP 38G Aplets - This article explores a simple aplet and shows how to construct an aplet called PolySides. by James A. Donnelly pages 64-69 HP PalmVue: A New Healthcare Information Product - The HP PalmVue system integrates personal computer, alphanumeric paging, and palmtop computer technology into an effective solution for delivering timely and high-quality patient data to mobile physicians. by Edward H. Schmuhl, Allan P. Sherman, and Jon D. Waisnor page 68 Data Through Paging Technology ============================================================ Hewlett Packard Pocket Calculator Buyer's Guide ------------------------------------------------------------ October 1975 -21A -22A -25A -45A -46A -55A -65A -80A -81A RPN Logic ============================================================ Hewlett Packard Personal Calculator Digest ------------------------------------------------------------ Vol 1, 1976 -21A -22A -25A -25C -27A -67A -80A -91A -97A pages 4-6 Thermal Printing: A New Dimension in Personal Calculators pages 24-25 Service Plus! A Picture Story pages 26-28 CMOS Remembers--A Technological Breakthrough page 29 RPN--The Last Word in Professional Logic System ------------------------------------------------------------ Vol 2, 1977 -21A -22A -25A -25C -27A -67A -80A -91A -97A pages 3, 28 The "Smart" Card Reader: An Inside Look pages 4-6 The Pocket Calculator: Its Advent and Impact pages 26-27 Homo Programmus: A New Breed pages 28 Card Format ------------------------------------------------------------ Vol 3, 1977 -10A -19C -21A -22A -25A -25C -27A -29C -67A -80A -91A -92A -97A pages 3, 27 Business Calculators: The New Blue-Chip Investment pages 4-6 Micro-Code: Electronic Building Blocks for Calculators page 27 The Logical Choice ------------------------------------------------------------ Vol 4, 1978 -10A -19C -29C -31E -32E -33E -37E -38E -67A -92A -97A pages 3-6 Programming: The Way to Grow pages 30-32 Engineering for the Cold, Cruel World page 33 The Programming Advantages of RPN ------------------------------------------------------------ Vol 5, 1979 -19C -29C -31E -32E -33E -37E -38E -67A -92A -97A pages 2-3, 28-20 "Thank You, Beep"...! by Gordon Dickson pages 24-27 How Programmable Calculators Help Kids Learn by Dr. John J. Wavrik ------------------------------------------------------------ Vol 6, 1980 -31E -32E -33E -33C -34C -37E -38E -38C -41C -67A -92A -97A pages 3-5, 32 Display Fundamentals pages 6-7 The Fine Art of Chip Manufacturing pages 30-31 The Business of Financial Calculators page 33 The HP-85: Hewlett-Packard's Personal Computer for Professionals ------------------------------------------------------------ Vol 7, 1980 -32E -33C -34C -37E -38C -41C -67A -97A 82153A pages 2-5 Custom HP-41c's Take Off pages 6-7 Birth of a Body pages 8-9 The Father of RPN pages 32-33 The HP-85 and Peripherals ------------------------------------------------------------ Vol 8, 1981 -11A -12A -32E -33C -34C -37E -38C -41C -41CV -67A -97A pages 2-3 The HP-41C: A Trip to Remember pages 4-5 Quality by Design
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