Hewlett Packard Publications

(since April 22, 1997)

Last Update: August 23, 2021 -- THE HP REFERENCE

INDEX

Hewlett Packard Journal
Hewlett Packard Personal Calculator Digest Vol. 1, 1976
HP 65 KEY NOTES
HP KEYNOTES

Hewlett Packard Journal

by Rick Furr Version 2.1.0
(Technical Information from the Laboratories
of Hewlett-Packard Company)

June 1972 Vol. 23 No. 10 -35A
- The 'Powerful Pocketful': An Electronic Calculator Challenges the Slide Rule (pp 2-9)
  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
- Operational Stacks and Reverse Polish Notation (pp 5)
  How the HP-35 Compares with the Slide Rule (pp 7)
- Algorithms and Accuracy in the HP-35 (pp 10-11)
  A lot goes into that little machine when it's computing a transcendental function. by D.S. Cochran
- Packaging the Pocket Calculator (pp 12-13)
  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
- A Pocket-Sized Answer Machine for Business and Finance (pp 2-8)
  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'
- Examples of HP-80 Solutions (pp 5)
- Appendix A -- A Typical HP-80 Algorithm (pp 8)
- Appendix B -- Principal HP-80 Equations (pp 8)
- A Quiet, Low-Cost, High-Speed Line Printer (pp 18-24)
  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
- The Thermal Printhead Story (pp 23)
May 1974 Vol. 25 No. 9 -65A
- The "Personal Computer": A Fully Programmable Pocket Calculator (pp 2-6)
  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
- Self Clocking Two-Track Recording Technique (pp 4)
- Programming the Personal Computer (pp 8-14)
  Wherein are revealed the functions of the keys, how problems are solved, and a bit of what goes on inside. by R.K. Stockwell
- Designing a Tiny Magnetic Card Reader (pp 15-17)
  Here's how it was designed and how it works. by R. B. Taggart
- Testing the HP-65 Logic Board (pp 18-20)
  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
- Three New Pocket Calculators: Smaller, Less Costly, More Powerful (pp 2-7)
  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
- An Example of HP-25 Programming (pp 6)
- Inside the New Pocket Calculators (pp 8-12)
  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. Fichter, and Richard E. Whicker
- Packaging the New Pocket Calculators (pp 10) by Thomas A. Hender
May 76 Vol. 27 No. 9 -2644A
- New CRT Terminal Has Magnetic Tape Storage for Expanded Capability (pp 2-15)
  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
- Mini Data Cartridge: A Convincing Alternative for Low-Cost, Removable Storage (pp 6-7) by Alan J. Richards (Calculator Products Division)
- Mini-Cartridge Drive Mechanism (pp 12)
June 76 Vol. 27 No. 10 -9815A, -9825A
- Third-Generation Programmable Calculator Has Computer-Like Capabilities (pp 2-14)
  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
- 9825a Product Design (pp 5)
- 9825A Cartridge Tape Unit (pp 13)
- High-Performance NMOS LSI Processor (pp 15-18) by William D. Eads, David S. MaitLand
- Mid-range Calculator Delivers More Power at Lower Cost (pp 24-32)
  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
- A Pair of Program-Compatible Personal Programmable Calculators (pp 2-8)
  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
- Programmable Scientific Calculator Has Built-In Printer (pp 9-18)
  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
- The New Accuracy: Making 2^3 = 8 (pp 16-17) by Dennis W. Harms
May 1977 Vol. 28 No. 9 -Algorithms I
- Personal Calculator Algorithms I: Square Roots (pp 22-24)
  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
- Personal Calculator Algorithms II: Trigonometric Functions (pp 17-20)
  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
- Printing Financial Calculator Sets New Standards for Accuracy and Capability (pp 22-28)
  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, 9815A, 9825A, 9845A
- Personal Calculator Algorithms III: Inverse Trigonometric Functions (pp 22-23)
  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
- An NMOS Process for High-Performance LSI Circuits (pp 26-32)
  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
- Application of the NMOS-II Process (pp 30-31)
December 1977 Vol. 29 No. 4 -01A
- Wrist Instrument Opens New Dimension in Personal Information (pp 2-10)
  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, -9845A
- Personal Calculator Algorithms IV: Logarithmic Functions (pp 29-32)
  A detailed description of the algorithms used in Hewlett-Packard hand-held calculators to compute logarithms. by William E. Egbert
- A Highly Integrated Desktop Computer System (pp 2-10)
  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
- System 45 Hardware Design (pp 11-21) by John C. Keith, Louis T. Schulte, and Ansel K. Vogen
- System 45 Product Design (pp 14-15) by Ray J. Cozzens
- System 45 Tape Control System (pp 20) by Richard Kochis
- System 45 Power Supply (pp 21) by Dick B. Barney
- Advanced Thermal Page Printer Has High-Resolution Graphics Capability (pp 22-28)
  This optional System 45 built-in peripheral quietly outputs program listings or hard copies of anything on the CRT display. by Ray J. Cozzens
- New Printhead Technology Developed for System 45 (pp 25-26) by Eugene R. Zeller
May 1979 Vol. 30 No. 5 -9835
- Extending Possibilities in Desktop Computing (pp 11-12)
  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
- Processor Enhancements Expand Memory (pp 13-15) by Damon R. Ujvarosy and Dyke T. Shaffer
- Designing to Meet Electromagnetic Interface Requirements (pp 16-17) by John C. Backer
- Assembly Programming Capability in a Desktop Computer (pp 18-20) by Robert M. Hallissy
December 1979 Vol. 30 No. 12 -34C
- Personal Calculator Has Key to Solve Any Equation f(x) = 0 (pp 20-26)
  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
- Why is Equation Solving Provably Impossible? (pp 23)
  "The merely Difficult, we do immediately; the impossible will take slightly longer." Old British naval maxim.
March 1980 Vol. 31 No. 3 -41C, -82104A, -82143A
- Powerful Personal Calculator System Sets New Standards (pp 3-12)
  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
- Using USER Mode (pp 5)
- Packaging the HP-41C (pp 7)
- The liquid crystal display made it interesting for the package designers. by Gerald W. Steiger
- Card Reader Offers Compatibility and Expanded Capability (pp 12-15)
  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
- Evolutionary Printer Provides Significantly Better Performance (pp 15-20)
  As the power of a calculator increases, so must the abilities of its printer. by Roger D. Quick and Donald L. Morris
- Bulk CMOS Technology for the HP-41C (pp 20-22)
  This integrated circuit process has many characteristics that contribute to long battery life in a calculator. by Norman L. Johnson and Vijay V. Marathe
- The First HP Liquid Crystal Display (pp 22-24)
- LCD advantages include low voltage and power requirements and good visibility in strong light. by Craig Maze
- High Density and Low Cost with Printed Hybrid Technology (pp 25-26)
  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
- A New World of Personal/Professional Computation (pp 3-6)
  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
- Adding I/O Capability to the HP-85 (pp 7-13)
  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
- Using HP-85 I/O Capabilities (pp 13) by Tim Mikkelsen
- A Compact Tape Transport Subassembly Designed for Reliability and Low Cost (pp 14-18) by Douglas J. Collins and Brian G. Spreadbury
- A High-Quality CRT Display for a Portable Computer (pp 19-21) by James F. Bausch
- A Compact Thermal Printer Designed for Integration into a Personal Computer (pp 22-25) by Clement C. Lo and Ronald W. Keil
- An Efficient Power Supply for the HP-85 (pp 24) by Jim Bausch
- Enhanced BASIC Language for a Personal Computer (pp 26-32) by Nelson A. Mills, Homer C. Russell, and Kent R. Henscheid
- Random Number Generation (pp 28) by Homer Russell
- Fast Integer Processing (pp 30) by Homer Russell
August 1980 Vol. 31 No. 8 -34C
- Handheld Calculator Evaluates Integrals (pp 23-32)
  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
- Handheld Scanner Makes Reading Bar Codes Easy and Inexpensive (pp 3-10)
  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.
- What is a Bar Code? (pp 7-8)
- Reading Bar Codes for the HP-41C Programmable Calculator (pp 11-14)
  A new accessory 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 HP-86, HP-87XM, -82184A
- Extended Memory and Modularity Are Added to the Series 80 Computer Family (pp 3-7)
  HP's newest Series 80 computers, the HP-86 and HP-87XM, provide memory capacities up to 640k bytes, different combinations of built-in interfaces, and for the HP-86, a modular system configuration. by John T. Eaton, Andrew W. Davidson, and William R. Frolik
- Module Brings CP/M to HP's Latest Series 80 Computers (pp 7-11)
  This small computer system plugs into the HP-86 and HP-87XM Computers to allow them to use the wide variety of CP/M-compatible software available to the personal computer user. by Timothy V. Harper
- Controlling a Graphics Plotter with a Handheld Programmable Calculator (pp 16-18)
  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
- HP-IL: A Low-Cost Digital Interface for Portable Applications (pp 3-10)
  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
- How Fast is the HP-IL? (pp 7) by Steve Harper
- HP-IL Interconnect System (pp 8) by James H. Fleming
- The Electronics Interface for the Hewlett-Packard Interface Loop (pp 11-16)
  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
- A CMOS Integrated Circuit for the HP-IL Interface (pp 16-22)
  This IC, available to OEM designers, makes it easy to add HP-IL capability to a product. by Steven L. Harper
- CMOSC: Low-Power Technology for Personal Computers (pp 23-29)
  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
- What is Latch-Up? (pp 28)
February 1983 Vol. 34 No. 2 -44468A DA/C Pac ROM
- Low Cost Instrument Control: A New ROM for the HP-41 Handheld Computers (pp 16-19)
  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 -82161A, Series-10, -15C, -16C
- Compact Digital Cassette Drive for Low-Cost Mass Storage (pp 17-24)
  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
- Scientific Pocket Calculator Extends Range of Built in Functions (pp 25-35)
  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
- A Pocket Calculator for Computer Science Professionals (pp 36-40)
  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
- Real (Floating-Point) Format (pp 37)
- Using the HP-16C (pp 38-39)
June 1983 Vol. 34 No. 6 -75, -82168A
- A Portable Computer for Field, Office, or Bench Applications (pp 3-4)
  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 Donald L. Morris
- A Telephone Interface for HP-IL Controllers (pp 5-7) by Sidnee Snell and Brian G. Spreadbury
- HP-IL and the HP-75 Portable Computer (pp 8-9) by Dennis C. York
- High-Capacity Electronics Systems for a Compact, Battery-Operated Computer (pp 10-14) by Elizabeth Brooks, Robert J. Livengood, Rex C. Smith, and Timothy F. Myers
- Packaging a Portable Computer (pp 12) by Lee S. Mason and Gary G. Lutnesky
- Electrostatic Discharge Protection for the HP-75 (pp 14) by Gary J. May
- Handpulled Magnetic Card, Mass Storage System for a Portable Computer (pp 15-19) by Kenneth R. Hoecker, James R. Schwartz, Francis A. Young, and Dean R. Johnson
- The HP-75 Production Card Recorder (pp 20-23) by David B. Patton
- Integration of the HP-75's Handpulled Card Reader Electronics in CMOS (pp 24-26) by Thomas J. Arnold and Billy E. Thayer
July 1984 Vol. 35 No. 7 -71B
- A New Handheld Computer for Technical Professionals (pp 3-10)
  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
- Calculator Mode for a Handheld Computer (pp 6-7) by Stephen Abell
- HP-IL Interface Module for the HP-71B Computer (pp 8-9) by Nathan Zelle and Jackie Hunt
- Soft Configuration Enhances Flexibility of Handheld Computer Memory (pp 10-13)
  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
- Custom CMOS Architecture for a Handheld Computer (pp 14-17)
  A 4-bit CPU provides a 512K-byte address space and uses a 64-bit internal word size. by James P. Dickie
  Packaging the HP-71B Handheld Computer (pp 17-21)
  An innovative combination of standard manufacturing techniques allows a very compact design. by Thomas B. Lindberg
- Module Adds Curve-Fitting and Optimization Capabilities to the HP-71B (pp 22-24)
  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
- An Optimization Example (pp 23)
  ROM Extends Numerical Function Set of Handheld Computer (pp 25-36)
  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
- Plug-In Module Adds FORTH Language and Assembler to a Handheld Computer (pp 37-40)
  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
- Viewpoints -- A Viewpoint on Calculus (pp 38-40)
  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
- Reader Forum -- response (pp 22-23) by Alain Maruari
August 1987 Vol. 38 No. 8 -18C, -28C
- A Handheld Business Consultant (pp 4-10)
  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
- Cash Flow Analysis Using the HP-18C (pp 7)
  The Equation Solver Menu in the HP-18C (pp 8-9) by Paul Swadener
- History and Inspiration of the Solve Interface (pp 10) by Chris M. Bunsen
- An Evolutionary RPN Calculator for Technical Professionals (pp 11-17)
  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
- HP-28C Plotting (pp 15) by Gabe L. Einstein
- Mechanical Design of the HP-18C and HP-28C Handheld Calculators (pp 17-20)
  A folding case and two keyboards enhance functionality while reducing label clutter. by Judith A. Layman and Mark A. Smith
- Symbolic Computation for Handheld Calculators (pp 21-25)
  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
- A Multichip Hybrid Printed Circuit Board for Advanced Handheld Calculators (pp 25-30)
  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
- An Equation Solver for a Handheld Calculator (pp 30-34)
  A combination of direct and iterative solving algorithms is used. by Paul J. McClellan
- Electronic Design of An Advanced Technical Handheld Calculator (pp 34-40)
  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
- An Infrared Link for Low-Cost Calculators and Printers (pp 16-21)
  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
- A Low-Cost Wireless Portable Printer (pp 21-23)
  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
- Manufacturing State-of-the-Art Handheld Calculators (pp 24-27)
  Robots and special fixturing help keep costs down. by Richard W. Riper
June 1991 Vol. 42 No. 3 -48S/SX
- The HP 48SX Scientific Expandable Calculator: Innovation and Evolution (pp 6-12)
  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
- HP 48SX Interfaces and Applications (pp 13-21)
  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
- HP Solve Equation Library Application Card (pp 22-25)
  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
- Hardware Design of the HP 48SX Scientific Expandable Calculator (pp 25-34)
  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
- Industrial Design of the HP 48SX Calculator (pp 27-28) by Michael Derocher
- HP 48SX Custom Integrated Circuit (pp 30) by Preston D. Brown
- Mechanical Design of the HP 48SX Memory Card and Memory Card Connector (pp 32-33) by M. Jack Muranami
- The HP 48SX Calculator Input/Output System (pp 35-40)
  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
- Manufacturing the HP 48SX Calculator (pp 40-43)
  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
- An Advanced Scientific Graphing Calculator (pp 6-22)
  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
- User Versions of Interface Tools (pp 20)
June 1996 Vol. 47 No 3 -38G
- A Graphing Calculator for Mathematics and Science Classes (pp 45-58)
  The HP 38G 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
- Creating HP 38G Aplets (pp 59-63)
  This article explores a simple aplet and shows how to construct an aplet called PolySides. by James A. Donnelly

Hewlett Packard Pocket Calculator Buyer's Guide October 1975
hp-25, hp-55, hp-21, hp-45, hp-65, hp-22, hp-80, hp-46, hp-81
- RPN Logic
Hewlett Packard Personal Calculator Digest Vol. 1, 1976
hp-25, hp-25c, hp-27, hp-21, hp-22, hp-91, hp-97, hp-67, hp-80
- Thermal Printing: A New Dimension in Personal Calculators (pp 4-6)
- Service Plus! A Picture Story (pp 24-25)
- CMOS Remembers--A Technological Breakthrough (pp 26-28)
- RPN--The Last Word in Professional Logic System (pp 29)
Hewlett Packard Personal Calculator Digest Vol. 2, 1977
hp-25c, hp-25, hp-21, hp-91, hp-80, hp-22, hp-27, hp-97, hp-67
- The "Smart" Card Reader: An Inside Look (pp 3 & 28)
- The Pocket Calculator: Its Advent and Impact (pp 4-6)
- Homo Programmus: A New Breed (pp 26-27)
- Card Format (pp 28)
Hewlett Packard Personal Calculator Digest Vol. 3, 1977
hp-92, hp-27, hp-80, hp-22, hp-10, hp-19c, hp-29c, hp-21, hp-25, hp-25c, hp-67, hp-97, hp-91
- Business Calculators: The New Blue-Chip Investment (pp 3 & 27)
- Micro-Code: Electronic Building Blocks for Calculators (pp 4-6)
- The Logical Choice (pp 27)
Hewlett Packard Personal Calculator Digest Vol. 4, 1978
hp-37e, hp-38e, hp-92, hp-10, hp-31e, hp-32e, hp-33e, hp-19c, hp-29c, hp-67, hp-97
- Programming: The Way to Grow (pp 3-6)
- Engineering for the Cold, Cruel World (pp 30-32)
- The Programming Advantages of RPN (pp 33)
Hewlett Packard Personal Calculator Digest Vol. 5, 1979
hp-67, hp-97, hp-31e, hp-32e, hp-33e, hp-19c, hp-29c, hp-37e, hp-38e, hp-92
- "Thank You, Beep"...! by Gordon Dickson (pp 2-3, 28-29)
- How Programmable Calculators Help Kids Learn by Dr. John J. Wavrik (pp 24-27)
Hewlett Packard Personal Calculator Digest Vol. 6, 1980
hp-41c, hp-34c, hp-33e/c, hp-32e, hp-31e, hp-37e, hp-38e/c, hp-67, hp-97, hp-92
- Display Fundamentals (pp 3-5, 32)
- The Fine Art of Chip Manufacturing (pp 6-7)
- The Business of Financial Calculators (pp 30-31)
- The HP-85: Hewlett-Packard's Personal Computer for Professionals (pp 33)
Hewlett Packard Personal Calculator Digest Vol. 7, 1980
hp-41c, 82153A, hp-34c, hp-33c, hp-32e, hp-38c, hp-37e, hp-67, hp-97
- Custom HP-41c's Take Off (pp 2-5)
- Birth of a Body (pp 6-7)
- The Father of RPN (pp 8-9)
- The HP-85 and Peripherals (pp 32-33)
Hewlett Packard Personal Calculator Digest Vol. 8, 1981
hp-11, hp-12, hp-41c/cv, hp-32e, hp-33c, hp-34c, hp-37e, hp-38c, hp-67, hp-97
- The hp-41c: A Trip to Remember (pp 2-3)
- Quality by Design (pp 4-5)

HP 65 KEY NOTES
Volume	Number of issues
1	5
2	3

HP KEYNOTES
Volume	Number of issues
1	3
2	4
3	4
4	3
5	3
6	4
7	?
8	2

(from Ken Sumrall)

The Calculator Reference by Rick Furr (rfurr@vcalc.net)

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