January 1981 v.32 n.1
Cover: Model 82153A digital bar-code wand for use with the HP-41C Calculator
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 Edward G. Weaver, Jr., Donald L. Lubin, John J. Uebbing, pg 3-10. HEDS-3000, HEDS-1000, 82153A.
What is a Bar Code? pg 7-8
[Authors:] Edward [Eddie] G. Weaver, Jr., Donald [Don] L. Lubin, John J. Uebbing, pg 9
Reading Bar Codes for the HP-41C Programmable Calculator. A new accessory for HP’s most powerful handheld calculator quickly enters data and programs from printed bar code, by David R. Conklin, Thomas L. Revere III, pg 11-14. 82153A.
[Authors:] Thomas [Tom] L. Revere III, David [Dave] R. Conklin, pg 14
A High Quality Low-Cost Graphics Tablet. It enables the user to interact easily with a computer graphics system to generate illustrations using predefined and user-defined shapes, point-to-point plotting, and continuous line drawing or tracing, by Donald J. Stavely, pg 15-24. 9111A.
Capacitive Stylus Design. The stylus for the 9111A Graphics Tablet is slim, rugged and provides tactile feedback, by Susan M. Cardwell, pg 17-18
[Author:] Susan M. Cardwell, pg 17
Programming the Graphics Tablet. Software packages for several HP computers use the tablet’s built-in capabilities to create diagrams, figures and charts, by Debra S. Bartlett, pg 20-21
[Author:] Debra [Debbie] S. Bartlett, pg 21
Tablet/Display Combination Supports Interactive Graphics. A graphics tablet combined with vector-scan display system provides a powerful, inexpensive graphics workstation, by David A. Kinsell, pg 22-23
[Author:] David [Dave] A. Kinsell, pg 23
[Author:] Donald [Don] J. Stavely, pg 24
Programming for Productivity: Factory Data Collection Software. DATACAP/1000 is a software tool for designing and managing data collection networks. Running on an HP 1000 Computer System, it is flexible, easy to use, and compatible with user-written routines, by Steven H. Richard, pg 25-31. HP1000, 92080A.
A Terminal Management Tool. It provides a reentrant environment for HP 1000 Computers, simplifying the development of multiterminal applications, by Francois Gaullier, pg 30-31
[Authors:] Francois Gaullier, Steven [Steve] H. Richard, pg 31
February 1981 v.32 n.2
Cover: Model 8662A Synthesized Signal Generator
A High-Purity, Fast-Switching Synthesized Signal Generator. When the lowest possible noise is a critical requirement for a programmable frequency source, this generator can do the job. Rapid switching and high output-level accuracy are two of its other advantages, by Roland Hassun , pg 3-7. 8662A.
Spectrail Purity, by Roland Hassun, pg 4
[Author:] Roland [Rolly] Hassun, pg 7
Digital Control for a High-Performance Programmable Signal Generator. Front-panel, internal and remote control of a complex instrument calls for a microprocessor-based controller, by Hamilton C. Chisholm, pg 8-11. 8662A.
8662A Power-On and Self-Test Sequences. The ROM and RAM tests have some clever twists, by Albert W. Kovalick, pg 9-10
[Author:] Albert [Al] W. Kovalick, pg 10
[Author:] Hamilton [Ham] C. Chisholm, pg 11
Low-Noise RF Signal Generator Design. Seven phase-locked loops and some innovative techniques did the job, by Dieter Scherer, Donald W. Mathiesen, Fred H. Ives, Bill S. Chan, William J. Crilly, Jr., pg 12-22. 8662A.
A Switching Power Supply for a Low-Noise Signal Generator. An unusual choice, because of switching noise, but the benefits outweighed the problems, by Gerald L. Ainsworth, pg 20. 8662A.
[Author:] Gerald [Jerry] L. Ainsworth, pg 20
[Authors:] Fred H. Ives, Dieter Scherer, Donald [Don] W. Mathiesen, pg 21
[Authors:] William [Skip] J. Crilly, Jr., Bill S. Chan, pg 22
A High-Purity Signal Generator Output Section. This section supplies a low-noise output with unprecedented level accuracy, by Donald T. Borowski, David L. Platt, pg 22-27
[Authors:] Donald [Don] T. Borowski, David [Dave] L. Platt, pg 26
Product Design for Precision and Purity. Shielding and reliability are major considerations, by Robert L. DeVries, pg 28-30. 8662A.
[Author:] Robert [Bob] L. DeVries, pg 30
Verifying High Spectral Purity and Level Accuracy in Production. The question is how to test a state-of-the-art product without losing production-line efficiency, by John W. Richardson, pg 30-32. 8662A.
[Author:] John W. Richardson, pg 32
March 1981 v.32 n.3
Cover: A piece of cultured (laboratory-grown) quartz
New Display Station Offers Multiple Screen Windows and Dual Data Communications Ports. This versatile computer terminal can act like four virtual terminals. It’s designed for data entry and program development, by Gary C. Staas, pg 3-8. 2626A.
[Author:] Gary C. Staas, pg 7
Display Station’s User Interface is Designed for Increased Productivity. Easy access to an extensive feature set requires a thorough, thoughtful approach to the user interface, by Gordon C. Graham, pg 8-12. 2626A.
[Author:] Gordon C. Graham, pg 11
Hardware and Firmware Support for Four Virtual Terminals in One Display Station. The goals were 2645A compatibility, improved price/performance and reliability and ease of use, manufacturing and service, by John D. Wiese, Srinivas Sukumar, pg 13-15. 2626A, 2645A.
[Authors:] Srinivas Sukumar, John D. Wiese, pg 15
A Silicon-on-Sapphire Integrated Video Controller. Integration was considered mandatory to make the display system practical and reliable, by Jean-Claude Roy, 16-19. 2626A.
[Author:] Jean-Claude [Jean] Roy, pg 19
SC-Cut Quartz Oscillator Offers Improved Performance. This compact oscillator is designed to serve as a built-in precision frequency source. New technology and packaging provide lower power consumption, faster warmup, better stability and lower phase noise, by Robert L. Wilson, J. Robert Burgoon, pg 20-29. 10811A/B.
The SC Cut, a Brief Summary. First introduced in 1974, the stress compensated cut has many virtues, by Charles A. Adams, John A. Kusters, pg 22-23
[Authors:] Charles A. Adams, John [Jack] A. Kusters, pg 23
Flexible Circuit Packaging of a Crystal Oscillator. Selectively stiffened flexible circuitry is a radical approach that meets tough objectives, by James H. Steinmetz, pg 26-28. 10811A/B.
[Author:] James [Jim] H. Steinmetz, pg 28
[Authors:] J. Robert [Bob] Burgoon, Robert [Bob] L. Wilson, pg 29
New Temperature Probe Locates Circuit Hot Spots. Use it with any general-purpose digital multimeter and some HP oscilloscopes to get readings directly in degrees Celsius, by Marvin F. Estes, Donald Zimmer, Jr., pg 30-32. 10023A.
[Authors:] Marvin F. Estes, Donald [Don] Zimmer, Jr., pg 32
April 1981 v.32. n.4
Cover: Materials Management/3000
An Interactive Material Planning and Control System for Manufacturing Companies. Drawing on HP’s own experience, this powerful software for the HP 3000 Computer makes it easier to deal with the complexities of operating a manufacturing company, by Robert M. Steiner, Nancy C. Federman, pg 3-12. Material Management/3000, 32260A.
[Authors:] Nancy C. Federman, Robert [Bob] M. Steiner, pg 12
A Novel Approach to Computer Application System Design and Implementation. The Application Customizer helps designers construct generalized application systems and gives users tools to tailor these systems to their own research, by Loretta E. Winston, pg 13-18. Application Customizer, Application Monitor.
[Author:] Loretta E. Winston, pg 18
Automating Application System Operation and Control. The Application Monitor schedules, initiates and controls all interactive and background activities in an application system, by Barry D. Kurtz, pg 19-22
[Author:] Barry D. Kurtz, pg 22
Precision DVM Has Wide Dynamic Range and High Systems Speed. This digital voltmeter makes precision laboratory measurements with 100-nanovolt dc resolution and two-ppm linearity. Variable integration time allows four-digit measurements at 300 readings per second, by Charles A. Clark, James J. Ressmeyer, Lawrence T. Jones, pg 23-32. 3456A.
Voltmeter Stores Measurement Instructions and Data, pg 30. 3456A.
[Authors:] Charles [Chuck] A. Clark, James [Jim] J. Ressmeyer, Lawrence [Larry] T. Jones, pg 31
May 1981 v.32 n.5
Cover: The exposure end of HP’s Electron Beam Lithography System
A Precision High-Speed Electron Beam Lithography System. This very fast electron beam system is designed for mask making or direct writing on wafers in an integrated circuit production environment, by Ronald K. Scudder, John C. Eidson, Wayne C. Haase, pg 3-13
Electron Beam Lithography, by Frank Ura, pg 5
Proximity Effect Correction by Processing, pg 6
[Authors:] Ronald [Ron] K. Scudder, Wayne C. Haase, John C. Eidson, pg 12
SAWR Device Fabrication, pg 13
A Precision, High-Current, High-Speed Electron Beam Lithography Column. The column’s field emission electron gun contributes to the system’s high speed, by Heui Pei Kuo, John Kelly, Timothy R. Groves, pg 14-20
A Precision X-Y Stage and Substrate Handling System for Electron Beam Lithography. This systems positions wafers and masks within 16 nanometres of the desired position, by Charles L. Merja, Earl E. Lindberg, pg 16-18
[Authors:] Earl E. Lindberg, Charles [Chuck] L. Merja, pg 18
[Authors:] Huei P. Kuo, Timothy [Tim] R. Groves, John Kelly, pg 20
Software Control for the HP Electron Beam Lithography System. A large, complex software package makes the system’s capabilities readily available to the user, by Bruce Hamilton, pg 21-23
[Author:] Bruce Hamilton, pg 23
Pattern Data Flow in the HP Electron Beam System. The pattern data turns the electron beam on and off at rates as high as 300 MHz, by Howard F. Lee, Michael J. Cannon, Robert B. Lewis, pg 24-27
[Authors:] Robert [Bob] B. Lewis, Howard F. Lee, Michael [Mike] J. Cannon, pg 26
Calibration of the HP Electron Beam System. Precision is achieved by measuring distortions and correcting them with software and electronics, by Geraint Owen, Faith L. Bugely, Ian F. Osborne, Robert B. Schudy, pg 27-33
Software for Octopole Calibration, pg 29
[Authors:] Robert [Bob] B. Schudy, Ian F. Osborne, Faith L. Bugely, Geraint Owen, pg 33
Digital Adaptive Matched Filter for Fiducial Mark Registration. Detecting registration marks on substrates is a problem of extracting a known signal from noise, by Tsen-gong Jim Hsu, pg 34-36
[Author:] Tsen-gong Jim Hsu, pg 36
June 1981 v.32 n.6
Cover: VLSI Design and Artwork Verification
Viewpoints: Marco Negrete on Structured VLSI Design, pg 3-4
[Author:] Marco R. Negrete, pg 4
VLSI Design Strategies and Tools. A survey of present approaches and possible future directions at Hewlett Packard, by Daniel J. Griffin, William J. Haydamack, pg 5-12
Advanced Symbolic Artwork Preparation (ASAP). ASAP is the top end of HP’s bipolar design methods, by P. Kent Hardage, Kyle M. Black, pg 8-10
[Authors:] P. Kent Hardage, Kyle M. Black, pg 10
VLSI Makes 32-Bit CPU Chip Possible, pg 11
[Authors:] William [Bill] J. Haydamack, Daniel [Dan] J. Griffin, pg 12
Design and Simulation of VLSI Circuits. Logic simulators, circuit simulators, and schematic editors aid the designer, by Richard I. Dowell, Ravi M. Apte, Louis K. Scheffer, pg 12-18
Transistor Electrical Characterization and Analysis Program (TECAP). More accurate models are needed as simulation becomes more important, by Ebrahim Khalily, pg 16-17
[Authors:] Ebrahim Khalily, Louis [Lou] K. Scheffer, pg 17
[Authors:] Richard [Dick] I. Dowell, Ravi M. Apte, pg 18
An Interactive Graphics System for Structured Design of Integrated Circuits. Multilevel symbolic representation and incremental design rule checking facilitate the creation of physical IC layouts, by William J. McCalla, Diane F. Bracken, pg 18-25. IGS.
IC Layout on a Desktop Computer. This small but powerful system has many of the capabilities of IGS and is compatible with it, by Thomas H. Baker, pg 20-21
[Author:] Thomas [Tom] H. Baker, pg 21
[Authors:] Diane F. Bracken, William [Bill] J. McCalla, pg 25
VLSI Design and Artwork Verification. Geometric and circuit level checking verify proper operation, by Michael G. Tucker, William J. Haydamack, pg 25-29.
See Also: Correction: Replacement for the figure on page 26 in the article “VLSI Design and Artwork Verification”, page 32 in the July 1981 issue
[Author:] Michael [Mike] G. Tucker, pg 28
University and Industrial Cooperation for VLSI. The benefits flow in both directions, by Merrill W. Brooksby, Patricia L. Castro, pg 29-33
A Process Control Network. Many small computers smooth the flow of wafers and help make processes transportable, by Christopher R. Clare, pg 30-31
[Author:] Christopher [Chris] R. Clare, pg 31
[Authors:] Merrill W. Brooksby, Patricia [Pat] L. Castro, pg 32
Benefits of Quick-Turnaround Integrated Circuit Processing. Going quickly from designs to chips aids the design process and improves yields, by Patricia L. Castro, Merrill W. Brooksby, Fred L. Hanson, pg 33-35
[Author:] Fred L. Hanson, pg 35
Viewpoints: David Packard on University and Industry Cooperation, pg 36
[Author:] David [Dave] Packard, pg 36
July 1981 v.32 n.7
Cover: Model 3054A Automatic Data Acquisition and Control System
Instrument System Provides Precision Measurement and Control Capabilities. Measurement and control instruments are integrated in a system package designed for easy use in data acquisition and control situations. This system is supported by software for common monitoring and actuating applications, by Virgil L. Laing, pg 3-8. 3054A.
Thermocouple conversion and Transducer Curve Fitting, pg 4
Why Compensate Thermocouples? Pg 5
Precision Data Acquisition Teams up with Computer Power. This data acquisition/control system includes HP’s most powerful technical computer, by Lawrence E. Heyl, pg 6. 3054C.
[Author:] Lawrence [Larry] E. Heyl, pg 6
Data Logging is Easy with an HP-85/3054A Combination. Here’s a compact data recording and display system with easy-to-use software, by David L. Wolpert, pg 7-8
[Authors:] David [Dave] L. Wolpert, Virgil L. Laing, pg 8
Versatile Instrument Makes High-Performance Transducer-Based Measurements. This instrument serves as the eyes, ears, and hands for a computer-controlled system that acquires data from transducers and controls equipment and processes, by Thomas J. Heger, James S. Epstein, pg 9-15. 3497A.
Internal Control of the 3497A Data Acquisition/Control Unit, pg 13
[Authors:] James [Jim] S. Epstein, Thomas [Tom] J. Heger, p15
Plug-in Assemblies for a Variety of Data Acquisition/Control Applications. There are units for multiplexing, counting, digital and analog inputs and outputs, and thermocouple measurements, among others, by Thomas J. Heger, Patricia A. Redding, Richard L. Hester, pg 16-22. 9915A.
[Authors:] Patricia [Pat] A. Redding, Richard [Rick] L. Hester, pg 22
Desktop Computer Redesigned for Instrument Automation. Combining the system development ease of a desktop computer with the configuration flexibility of a board computer provides the instrumentation system designer with a new alternative for automation, by Vincent C. Jones, pg 23-32. 9915A.
A Unifying Approach to Designing for Reliability. Strife testing can help the designer realize a more reliable product, by Kenneth F. Watts, pg 24-25
[Author:] Kenneth [Ken] F. Watts, pg 25
Designing Testability and Serviceability into the 9915A. A computer that tests itself makes it easier to diagnose and fix system problems, by David J. Sweetser, pg 27-28
[Author:] David [Dave] J. Sweetser, pg 27
Operator Interface Design. You don’t get a keyboard or CRT display with a modular computer, but you can add them if you want to, by Robert A. Gilbert, pg 29-30. 9915A.
[Author:] Robert [Bob] A. Gilbert, pg 30
Cost-Effective Industrial Packaging. A rugged low-cost package is essential for a modular computer, by Eric L. Clarke, pg 31
[Author:] Eric L. Clarke, pg 31
[Author:] Vincent [Vince] C. Jones, pg 32
Correction: Replacement for the figure on page 26 in the article “VLSI Design and Artwork Verification”, page 25 in the June 1981 issue, pg 32
August 1981 v.32 n.8
Cover: HP power MOSFET fits in the schematic diagram of a 65000A Power Supply
200-kHz Power FET Technology in New Modular Power Supplies. These small, reliable 50-watt supplies are designed for OEM (original equipment manufacturer) use anywhere in the world, by Richard Myers, Robert D. Peck, pg 3-9. 65000A.
Magnetic Components for High-Frequency Switching Power Supplies. The goals were small size, 200-kHz operation, safety, and semiautomated manufacturing, by Winfried Seipel, pg 8-9
[Authors:] Richard [Rich] Myers, Winfried [Win] Seipel, Robert [Bob] D. Peck, pg 9
Laboratory-Performance Autoranging Power Supplies using Power MOSFET Technology. State-of-the-art components and circuit design enable this new generation of laboratory and system supplies to set new standards for performance and flexibility, by John W. Hyde, Dennis W. Gyma, Paul W. Bailey, Daniel R. Schwartz, pg 11-17. 6024A, 6012A.
[Authors:] Paul W. Bailey, John W. Hyde, Dennis W. Gyma, Daniel [Dan] R. Schwartz, pg 16
The Vertical Power MOSFET for High-Speed Power Control. A vertical semiconductor device structure provides a power MOSFET that can switch high currents and voltages very rapidly which makes it useful for power supplies, pulse drivers, and switching amplifiers, by Victor Li, Dah Wen Tsang, Robert L. Myers, Karl H. Tiefert, pg 18-24. 6501.
Power MOSFET Performance Useful for Many Applications, pg 19
[Authors:] Karl H. Tiefert, Robert [Bob] L. Myers, Dan Wen Tsang, Victor Li, pg 23
MOSFET Fabrication Requires Special Care, pg 24
Power Line Disturbances and Their Effect on Computer Design and Performance. Noise induced on the ac power line by machinery, lightning, and even appliances can be deterimental to computer performance. By becoming familiar with the nature of the noise and its causes, the designer and user can take steps to minimize the effect on computers, by Arthur W. Duell, W. Vincent Roland, pg 25-32
Definitions: ac Power Anomalies, pg 27
[Authors:] W. Vincent [Vince] Roland, Arthur [Art] W. Duell, pg 32
September 1981 v.32 n.9
Cover: HP Model 47210A Capnometer
A Reliable, Accurate CO2 Analyzer for Medical Use. Measuring the amount of carbon dioxide in a patient’s breath is an important medical diagnostic tool. This instrument makes the measurement quickly and easily without cumbersome calibration requirements, by Rodney J. Solomon, pg 3-21. 47201A.
Infrared Absorption, pg 4
A Miniature Motor for the CO2 Sensor (with Thanks to Kettering). The rotor contains optical elements, is the size of a coin, and rotates at 2400 r/min, by Edwin B. Merrick, pg 8-9
[Author:] Edwin [Ed] B. Merrick, pg 8
Fabrication of Sensor Requires Special Care, pg 10-11
An End-Tidal/Respiration-Rate Algorithm. An infrared absorption signal is processed digitally to yield CO2 level and rate of breathing, by John J. Krieger, pg 12-13
[Author:] John J. Krieger, pg 13
In-service CO2 Sensor Calibration. Quick and easy calibration is essential for a medical instrument, by Russell A. Parker, Rodney J. Solomon, pg 16-18. 47210A.
[Author:] Russell [Russ] A. Parker, pg 18
Making Accurate CO2 Measurements. This system produces accurate gas mixtures for CO2 sensor calibration, by John J. Krieger, pg 19-20
[Author:] Rodney [Rod] J. Solomon, pg 20
A Versatile Low-Frequency Impedance Analyzer with an Integral Tracking Gain-Phase Meter. This instrument measures impedance parameters, gain, phase, and group delay of individual components, circuit sections, and complete circuits. The measurements are automatic, wideband, and made under variable frequency and/or dc bias voltage conditions, by Kanuyaki Yafi, Takeo Shimizu, Yoh Narimatsu, pg 22-28. 4192A.
[Authors:] Yoh Marimatsu, Kazuyuki Yagi, Takeo Shimizu, pg 28
A Fast, Programmable Pulse Generator Output Stage. A new pulse generator supplies fast-transition pulses for testing 100k ECL, advanced Schottky TTL and other fast logic families, by Peter Aue, pg 29-32. 8161A.
[Author:] Peter Aue, pg 32
October 1981 v.32 n.10
Cover: A portion of the recording mechanism of the 4700A Cardiograph
Development of a High-Performance, Low-Mass, Low-Inertia Plotting Technology. A new vector plotter technology makes possible small, inexpensive graphics products that provide high-quality plots quickly, by Charles E. Tyler, Lawrence LaBarre, Wayne D. Baron, Robert G. Younge, pg 3-7. 4700A, 7580A.
Digital Control Simplifies X-Y Plotter Electronics, by W. D. Baron, pg 5-6
[Author:] Charles [Chuck] E. Tyler, Lawrence [Larry] LaBarre, Robert [Rob] G. Younge, Wayne D. Baron, pg 7
Plotter Servo Electronics Contained on a Single IC. This integrated circuit chip greatly simplified the design of products using HP’s new plotting technology, by Clement C. Lo, pg 8-9
[Author:] Clement C. Lo, pg 9
An Incremental Optical Shaft Encoder Kit with Integrated Optoelectronics. This kit can be assembled easily by an OEM (original equipment manufacturer) to provide accurate digital information about shaft position and velocity in digitally controlled electromechanical systems, by John J. Uebbing, Mark G. Leonard, Howard C. Epstein, pg 10-15. HEDS-5000.
[Authors:] Mark G. Leonard, Howard C. Epstein, John J. Uebbing, pg 15
New Plotting Technology Leads to a New Kind of Electrocardiograph. A low-mass, low-inertia plotting mechanism provides high-quality ECG’s in a variety of convenient formats, by Peter H. Dorward, Martin K. Mason, Steven J. Koerper, Steven A. Scampini, pg 16-24. 4700A.
What Is an Electrocardiogram? pg 20
[Authors:] Martin [Marty] K. Mason, Steven J. Koerper, pg 23
[Authors:] Steven [Steve] A. Scampini, Peter H. Dorward, pg 24
November 1981 v.32 n.11
Cover: 7580A Drafting Plotter
Development of a Large Drafting Plotter. Developing a large X-Y plotter that provides drafting-quality drawings, requires minimal floor space and costs less than half comparable machines was not easy. This article outlines the history and performance features of HP’s largest X-Y plotter, by George W. Lynch, Marvin L. Patterson, pg 3-7. 7580.
[Authors:] George W. Lynch, Marvin L. Patterson, pg 7
Aspects of Microprocessor and I/O Design for a Drafting Plotter. The use of a powerful microprocessor allows the designer to provide desirable features without increasing the complexity of the hardware, by Neal J. Martini, Hatem E. Mostafa, Dale W. Schaper, Lowell J. Stewart, pg 7-11. 7850A.
[Authors:] Neal J. Martini, Lowell J. Stewart, Hatem E. Mostafa, Dale W. Schaper, pg 11
Motor Drive Mechanics and Control Electronics for a High-Performance Plotter. HP’s low-mass, low-inertia design greatly simplifies the mechanical drive and servo control electronics, by Myungsae Son, Terry L. Flower, pg 12-15. 7580A.
[Authors:] Terry L. Flower, Myungsae [Myron] Son, pg 15
Firmware Determines Plotter Personality. This firmware provides drafting-quality lettering, keeps track of pens and plotting parameters, and minimizes the need for operator adjustments, by Mark A. Overton, Larry W. Hennessee, Richard B. Smith, Andrea K. Frankel, pg 16-25. 7580A.
New Language Tools Aid Plotter Firmware Development, by Andrea K. Frankel, pg 24
[Authors:] Richard [Rick] B. Smith, Larry W. Hennessee, Mark A. Overton, Andrea K. Frankel, pg 25
Y-Axis Pen Handling System. An adaptive pen-lift mechanism, automatic pen selection and storage, and a sturdy drive system are key elements of this design, by David J. Perach, Samuel R. Haugh, Robert D. Haselby, pg 25-32. 7580A.
[Authors:] Samuel [Sam] R. Haugh, David [Dave] J. Perach, Robert [Bob] D. Haselby, pg 32
X-Axis Micro-Grip Drive and Platen Design. Moving paper accurately with grit-covered wheels requires careful attention to platen design and grit-wheel fabrication, by Ronald J. Kaplan, Robert S. Townsend, pg 33-36. 7580A.
[Authors:] Robert [Bob] S. Townsend, Ronald [Ron] J. Kaplan, pg 36
December 1981 v.32 n.12
Cover: a 280-megahertz SAW resonator
Surface-Acoustic-Wave Delay Lines and Transversal Filters. Novel, simple and compact electronic devices can be realized by exciting and detecting acoustic waves electrically on the surface of a solid. Technological advances in low-loss delay lines and bandpass filters are discussed, by William R. Shreve, Waguih S. Ishak, H. Edward Karrer, pg 3-8. SAW.
[Authors:] H. Edward [Ed] Karrer, William [Bill] R. Shreve, Waguih S. Ishak, pg 8
Surface-Acoustic-Wave Resonators. By reflecting acoustic waves back and forth on the surface of a crystal one can obtain resonant devices for frequencies in the UHF range, by Scott S. Elliott, Peter S. Cross, pg 9-17. SAW.
SAWR Fabrication. The process used to make surface acoustic-wave resonators is similar in many ways to the processes used to make integrated circuits, by Robert C. Bray, Yen C. Chu, pg 11-13
[Authors:] Yen C. Chu, Robert [Bob] C. Bray, pg 13
280-MHz Production SAWR. It’s the first SAW component designed for use in an HP instrument, by Marek E. Mierzwinski, Mark E. Terrien, pg 15-16
[Authors:] Mark E. Terrien, Marek E. Mierzwinski, pg 16
[Authors:] Peter S. Cross, Scott S. Elliott, pg 17
Physical Sensors using SAW Devices. Novel force and pressure transducers sense the effects of mechanical stress on surface wave velocity and resonant frequency, by J. Fleming Dias, pg 18-20
[Author:] J. Fleming Dias, pg 20
Proximity Effect Corrections by Means of Processing: Theory and Applications. HP’s electron beam lithography system has been used to evaluate methods of reducing the unwanted effects of electron scattering, by Paul Rissman, Michael P.C. Watts, pg 21-27
Monte Carlo Simulations for Electron Beam Exposures. A computer model of electron scattering aids research into this effect, by Armand P. Neukermans, Steven G. Eaton, pg 24-25
[Authors:] Steven G. Eaton, Armand P. Neukermans, pg 24
[Authors:] Paul Rissman, Michael P. C. Watts, pg 27
Index: Volume 32 January 1981 through December 1981. PART 1: Chronological Index, pg 28-29. PART 2: Subject Index, pg 29-31. PART 3: Model Number Index, pg 31. PART 4: Author Index, pg 31-32.
