Circuit Cellar Issue 140 March 2002-PDF

ISSUE 140March 2002Theme: Embedded ApplicationsTask Manager—Fun, Games, and Inside information, by Rob Walker, 6.New Product News, edited by John Gorsky, 8.A PIC-Based Portable ID Reader for iButtons—by Michael Collier,Ph.D. , 12High-Resolution Data Acquistion Made Easy—Brian Millier, 20A Web Link Monitoring System —Tom Petruzzell, 28.In-Circuit Emulator for the AT89Cx051 Family—by Praveen Deshpande & Prajakta Deshpande, 34.Balancing D/A Conversion on One Pin— by Mariano Barrón & Javier Martinez, 52. Applied PCs—Replacing Relays with Ladder Logic–Part 1: Getting Ready for the Climb— by Fred Eady, 60.From the Bench—Spy-Size Event Logger, by Jeff Bachiochi, 68.Silicon Update—SoC Hop, by Tom Cantrell, 78.Priority Interrupt—Automobiles by Microsoft?, by Steve Ciarcia, 96.