Circuit Cellar Online -This Month

THE MAGAZINE FOR COMPUTER APPLICATIONS Circuit Cellar Online offers articles illustrating creative solutions and unique applications through complete projects, practical tutorials, and useful design techniques.

	A REMOTE ALARM REPORTING SYSTEM
		by Tom Petruzzellis If you want to be updated on events that your home security system notices, then the remote event/alarm reporting system that Tom designed is just what youıre looking (er, listening) for. The next time your cell phone rings, you might want to take the call because it just might be your security system. October 99
	REPLACING 8051 RAM
		with Dallas Timekeeping RAM by Bruce Reynolds Wouldnıt you like to give your system an upgrade without a complete redesign? Bruce offers the DS1644 nonvolatile timekeeping RAM and he recommends it for your 8051 applications needing nonvolatile external memory with timekeeping capabilities. October 99
	EMBEDDED SYSTEMS n-FORMATION
		Implementing an n-Tiered Client-Server Architecture by Ian Agranat In corporate environments, who knows what depends on who knows who, and who knows who depends on who who is. As Mark shows us, the n-tiered architecture was designed to make sure the right people have access to the information they need. October 99
	TESTING 1, 2
		Part 4: Immunity Not for Circuitry by George Novacek Your design needs to be rock solid regardless of what frequency is thrown at itıand thatıs a lot these days with the proliferation of cellular phones, radar, and microwave technology. And, your design needs to keep its radiation of frequency to itself as well. Check in with George to find out what tests the lab will throw at your design to make sure itıs ready for the real world. October 99
	A SWITCHER FOR MANY REASONS
		by Lawrence Foltzer Need a quick solution for a variable high-voltage application? Using less than 300 words, two figures, and one listing, Lawrence shows us that the answer may be as simple as making a variable burst length, fixed duty-cycle switching power supply driven by an RC-clocked PIC microcontroller. October 99
	I/O FOR EMBEDDED CONTROLLERS
		Part 2: Analog I/O by Bob Perrin Embedded systems are used in so many different applications, covering all possible analog I/O requirements is impossible. In Part 2 of this series on I/O, Bob offers a few circuits and components that have proven adequate for many applications in the past. October 99
	TIMING IS EVERYTHING
		by George Martin If youıve ever wanted to choke the person who made up a project design schedule, or if you are the one responsible for making the schedules, you might want to listen to what George has to say about the importance and benefits of making a realistic, achievable, and practical design schedule. October 99
	16-BITS OR BUST
		by Tom Cantrell If 8-bit chips are the MCU compact pickup truck and 32-bit chips are the Corvettes, what does that make the 16-bit chips? This month, Tom does some homework and hopes to find out exactly where 16-bit chips fit in the MCU market. October 99
	WHAT'S YOUR ENGINEERING QUOTIENT?
		Test Your EQ presents some basic engineering problems for you to test your engineering quotient. • Step up to the plate. —Questions 1 & 2 • Take a swing! —Questions 3 & 4 • What's the count? —Questions 5 & 6 • Homerun? —Questions 7 & 8
	RESOURCE LINKS
		Each month Circuit Cellar's Resource Links provides helpful links and information on a variety of featured topics. Joint Test Action Group (JTAG) by Bob Paddock RS-485 and Multidrop Networking by Benjamin Day Fuel Cells and Radioisotope Heater Units by Bob Paddock The 80186 by Benjamin Day
	DESIGN CONTESTS
		Connect Your PIC to the Internet Now, Getting Connected to the Internet Can Earn You Cash. More information.
	NEW PRODUCT NEWS—edited by Harv Weiner
		PIC/104-Plus Module Single Board Computer Sample and Hold PCI DAQ Board IDE Flash Drive AUDIO-4 USB Portable DSP Data Acquisition New Product submissions may be sent to Harv Weiner. 4 Park St. Vernon, CT 06066.
	PRIORITY INTERRUPT
		Circuit Cellar Online by Steve Ciarcia Read Steve Ciarcia's latest editorial exclusively presented by AVNET. October 99
	CIRCUIT CELLAR's Print Magazine
		Take advantage of more than 11 years of engineering editorial experience with Circuit Cellar's print magazine! Full of unique, application-oriented articles. Come see what's in this month's publication! October 99
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