Circuit Cellar Ink 22
August/September 1991

Table of Contents

1 Curtis Franklin, Jr.	Editor's INK The March of Technology
4	Reader's INK Letters to the Editor
8	New Product News
14 Chris Ciarcia	Using Device Drivers to Change the Rules MS-DOS device drivers are the key to controlling PC hardware at the lowest level. Learning how to write drivers can open up your applications to greater functionality and flexibility.
26 Steven E. Strauss P. K. Govind	ISDN (S/T) Interface -- Part 1 General Review of Functional Concepts Integrated Services Digital Network (ISDN) is making the transition from planning to reality. Understanding the nature of the network is an important first step toward using ISDN's potential. Next time: The hardware for making ISDN work with your PC!
32 John Dybowski	SART: Building the Network Software -- Part 2 Control networks are the sum of their hardware and software. The concluding part of this article talks about the software for tying the net together. Download: SARTMAN.ZIP S-ART.ZIP
42 Keith Wentworth	But it Worked with My Emulator! Why Emulation Isn't Reality Emulators are valuable tools when it comes to working the bugs out of a new design, but there are traps and pitfalls waiting for the unwary. Knowing what to look for when you use an emulator can reduce the surprises when you move your software to the final platform.
49 Ed Nisley	Son of DDT: A New 8031 Debugger The DDT-51 was a break-through project in low-cost debugging and development equipment. New, it's time for the next generation. Find out what four years of input from users, field experience, and technical development have done for the personal embedded software development. Download: SDDTDEMO.ZIP
60 Eduardo Perez Dapang Chen	Numerical Applications Using DSP Using a DSP Chip for High-Speed Numeric Processing Digital Signal Processors are frequently more than just signal processors, they're high-speed number crunchers in their own right. Knowing what they can do may open up new applications for these popular and powerful processors.
74 Ed Nisley	Firmware Furnace Toolmaker's Toolworks Download: SCRIPTS.ZIP
81 Jeff Bachiochi	From the Bench Reducing Power Consumption -- Breathing New Life Into Data Logging Download: LOGGER.BAS
88 Tom Cantrell	Silicon Update Kynar to the Rescue -- The Ultimate Sensor?
95 Scott Robert Ladd	Practical Algorithms Summarizing Your Data -- Properties of a Bounded Probability Density Function
97	Advertiser's Index
104 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
112 Steve Ciarcia	Steve's Own INK A Standard Column

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