Circuit Cellar Ink 71
June 1996

Table of Contents

2


Ken Davidson

Task Manager

Good Data, Bad Results

6

Reader I/O

Letters to the Editor

8


Harv Weiner

New Product News

12


Don Newquist

A/D Conversion with Zilog's Z8 Microcontroller

Often applications using A/D conversion compromise accuracy, speed, or cost. Don offers four ADC configurations. He shows you how to use specific techniques to your advantage. His goal: little compromise!

Download: Z8ADC.ZIP

22


David Gaddis

Battery Load/Charge Analyzer

Here's the circuitry and software of a universal, portable test instrument to evaluate battery charge/discharge. It transforms tedious time-based measurements into simple, automated operations.

Download: BCDA.EXE

30


David Prutchi

Sniffing EMI in the Near Field

Noncompliance with FCC and EMC regulations affects everyone! So, David shows designers how to construct probes that identify and isolate sources of EMI that inevitably make it into a circuit.

42


Ingo Cyliax

Easy-to-Use Serial EEPROMs

There seem to be as many flavors of serial EEPROMs as there are manufacturers. Interfaces using 2, 3, and 4 wires abound. Now, Atmel has introduced a family of EEPROMs that does it all.

Download: EEPRG.ZIP

52


Ed Nisley

Firmware Furnace

80x86 Performance: I/O Bound

The next time you're starting the design of an embedded PC product, don't put a lot of weight on processor speed until you look at what it will spend its time doing. Ed explains why.

Download: FF71.ZIP

60


Jeff Bachiochi

From the Bench

Printer Sharing: Automatic Parallel Printer Switch

Stow your assembler, compiler, and programmer. This month's project doesn't need a micro. Jeff creates a smart printer switch that shares your favorite printing device between two computers.

Embedded PC

64


Harv Weiner

Nouveau PC

Embedded PC

70


Scott Baisch
Kevin Smith

WinLight

Part 1: The Nonfat Operating System

For many embedded developers, Windows has brought more problems than solutions. WinLight, however, targets the embedded market. It provides a leaner, meaner, fully GUI, protected-mode, Windows-like operating system.

Embedded PC

74


Brad Reed

Rolling Your Own Intel '386EX-based Embedded PC

Brad introduces the R300EX and R380EX memory and bus controllers created by RadiSys to support Intel's '386EX. A highly-practical sidebar gives design advice for integrating the R300EX and R380EX with PC/104.

Embedded PC

82


David Chanoux

Embedded PCs

Embedded Systems for Weight and Force Measurement Applications

Until recently, there has been no tool to integrate weighing sensors with embedded PCs. David lets us in on some recent improvements in the link between the PC/104 standard and load-cell technology.

Embedded PC

89


Fred Eady

Driving Multiaxis Stepper Motors

Fred ushers us up to motion-control heaven without generating a single line of code. He's quick to show how easy it is to design and implement even the most demanding motion-control application with off-the-shelf stepper equipment.

98


Tom Cantrell

Silicon Update

The Little LAN That Could

Is Tom's secret decoder ring a sign he's moving into the spy business? Not likely once he's let the cat out of the bag (or the time out of the can) about Dallas Semiconductor's line of touch products.

97

Advertiser's Index

106


Ken Davidson

ConnecTime -- Excerpts from the Circuit Cellar BBS

120


Steve Ciarcia

Priority Interrupt

'Bots Got No Respect

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