Circuit Cellar Ink 48
July 1994

Table of Contents

2 Ken Davidson	Editor's INK Information Society
6	Reader's INK Letters to the Editor
8 Harv Weiner	New Product News
14 Richard Newman	The Personal PBX While small-scale key system units (KSUs) are available commercially for the home, they usually have extra features and require special telephones. Instead, put your own system together for a fraction of the cost. Download: PBX.ZIP
24 Hank Wallace	Using the Golay Error Detection and Correction Code People often forget the work done long before the microprocessor when developing algorithms. The discoveries made by Marcel J.E. Golay in 1949 are well-suited for some of today's communications systems. Download: GOLAY.ZIP
36 John Iovine	The Great Encryption Debate Plaintext. Cyphertext. Clipper. There is a raging debate going on in cryptography circles these days, and everyone has an opinion. Find out some of the basics to be better prepared next time someone asks for yours. Download: ENCRYPT.ZIP
40 Michael Swartzendruber	Take a Bus to the Nearest Star The Star-485 Adds Flexibility to any RS-485 Network Daisy chained connections and under 32 nodes work just fine for many RS-485 applications. However, what happens when you need to go beyond the spec? Add a Star-485 or a BR-485 and go beyond the limits.
48 Ed Nisley	Firmware Furnace Journey to the Protected Land: The '386SX Takes the First Step Protected-mode programming is not for the faint of heart, especially in embedded applications. However, it can be a useful skill to master, so let Ed be your guide as he heads into this sometimes frightening land. Download: FF48.ZIP
58 Jeff Bachiochi	From the Bench Virtual Reality Requires Real Data, Part II -- A Simple Matter of Software Got those exoskeletons built yet? If so, now is the time to do some experimenting and data collection. It wouldn't be a complete project if the software wasn't covered. So Jeff steps back into the virtual world with a view from software. Download: FTB48.ZIP
68 Tom Cantrell	Silicon Update IrDA -- the IR Babel Buster What good is the infrared interface on your newest palmtop or PDA when it can't be used to talk to other people's units? A consortium of manufacturers agrees, and the result is IrDA. Find out more.
74 John Dybowski	Embedded Techniques Add Some Code to the BIOnet Networking hardware is pretty worthless without some control code. John brings the BIOnet to life with a mix of C and assembler routines. Download: ET48.ZIP
81	Advertiser's Index
84 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
96 Steve Ciarcia	Steve's Own INK One Man's Junk ...

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