Circuit Cellar Issue 055 February 1995-PDF

 ISSUE 55 February 1995 Theme: EMBEDDED INTERFACING Editor’s INK—Jelly Beans, by Ken Davidson, 2. Reader’s INK, 6. New Product News, 8. Interfacing Flow Meters To High-Speed Counters, by Bill Payne, 14. Use Infrared To Make Embedded Printing Easy, by Jeff Fisher, 18. It’s Not Just For Memory Anymore—An Introduction to PCMCIA, by Lalo J. Gastriani, 22. Speeding And Slimming Your Port Access—A Different Way of Reading from the PC Parallel Port, by Tracey Lee & Kok-Leong Ong, 30. Battery-Operated Power Supplies—Selecting the Right Battery and Supply for Your Application, by David Prutchi, 36. Firmware Furnace—Journey to the Protected Land: Infrastructure Improvement, by Ed Nisley, 50. From the Bench—Fitting 10 oz. into a 5-oz. Package: An Application for Highway Safety, by Jeff Bachiochi, 60. Silicon Update—I Sync, Therefore I DRAM, by Tom Cantrell, 68. Embedded Techniques—Downsizing: Atmel’s AT89C2051 Flash-based Microcontroller, by John Dybowski, 76. ConnecTime—Excerpts from the Ci