Circuit Cellar Ink 49
August 1994

Table of Contents

2 Ken Davidson	Editor's INK The Ultimate Data Collection Machine
6	Reader's INK Letters to the Editor
8 Harv Weiner	New Product News
14 Brian Millier	The Two-channel Printer Recorder Replace that Expensive Strip-chart Recorder with a Dot-Matrix Printer The strip-chart recorder eliminates worries about lost memory or post-processing data to graph it, but it can be expensive. Get most of the features without the cost by using a common dot-matrix printer. Download: RECORDER.ZIP
28 J. Conrad Hubert	Get Precise, with the precis A/D Converter Collect Lots of Precise Data with this 16-bit, 100-kHz ADC "High speed" and "high resolution" are usually mutually exclusive, but not with precis. This ISA-bus board works with any PC and has the capability to overrun even the fastest PC-compatible system.
38 Chris Peoples	Calibrating Seismic Velocity Transducers with precis An A/D converter board in hand is worthless without having something to use it for. Chris picks up where J. Conrad left off in the previous article by applying the precis ADC board to a real application.
44 Barry Rein, Esq.	Patents and Copyrights for Protecting Software Recent Progress in Finding the Proper Balance "Can I protect my code?" Developments in copyright and patent law suggest that finally a slightly definitive "yes" is coming through.
52 Ed Nisley	Firmware Furnace Journey to the Protected Land: Segments All the Way Down The protected land where 80x86-type processors try to be like the big boys is fraught with peril, so you must be careful. Travel with Ed as he tries to make the journey smoother for those who follow. Download: FF49.ZIP
60 Jeff Bachiochi	From the Bench Ta(l)king Control The dream of a computer understanding the spoken word lives on, and Jeff has found a new chip that makes it easier to fulfill. Find out if his computer is finally doing as he says and not as he does. Download: FTB49.ZIP
68 Tom Cantrell	Silicon Update In the Realm of Sensors In any embedded control or data collection system, the sensors are just as important as the controller. While typically analog, sensor interfaces are slowly making the transition to digital. Check out what's new.
74 John Dybowski	Embedded Techniques Speed Demon in 80031's Clothing: Exploring the DS80C320 Processor How do you increase the performance of an existing 8031 circuit by just changing the processor? Add a Dallas Semiconductor 80C320. Find out about other timing-related issues that also come into play.
81	Advertiser's Index
82 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
96 Steve Ciarcia	Steve's Own INK Time to Move On

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