Circuit Cellar Ink 18
December 1990/January 1991

Table of Contents


Curtis Franklin, Jr.

Editor's INK

I've Seen the Future

The times are a'changing ... and so is our industry. A recent industry conference provided a (murky) crystal ball for your editor.


Reader's INK

Letters to the Editor


New Product News


John Dybowski

ONDI -- The ON-Line Device Interface

Part 2 -- Software for Remote PC Control

A complete computer remote-control system wraps up with a look at the software for remote control, operation, and display.

Download: ONDI.ZIP


Chris Ciarcia

Principles of PC-based Data Acquisition and Control Systems

Writing control software can't start until you understand the problems. A lesson in control theory can save you hours in wasted design time.


Tim McDonough
Bruce Webb

An Interface for Portable Battery-Backed RAM

Using the Mitsubishi BEE Card for Nonvolatile Data Storage

"Credit Card" memory offers nonvolatile storage in a portable package. Interfacing to Mitsubishi's version couldn't be simpler.


Steve Ciarcia
Burt Brown

Using the Motorola MC68HC11

A Venerable History and a Certain Future

Motorola's 68HC11 is a powerful 8-bit processor. It's a perfect choice for a compact controller.


Note: Also see the Microprocessor Cross-Development Tools file area (area 4) for more MC68HC11 code.


Markus A. Levy

Designing with Flash Memory

Is There a New Alternative to EEPROM and SRAM?

Flash memory is the latest development in user-programmable nonvolatile storage. A PC-bus design illustrates techniques for interfacing and programming.

Download: FLASH.ZIP


Ed Nisley

Firmware Furnace

ANSI Controls and Fixed Points

The fine points of getting the right results and showing them to the user are the heart of this installment.

Download: FFANSI.ZIP


Jeff Bachiochi

From the Bench

Magnetic Levitation: An Example in Closed-Loop Control -- How to Defy Gravity Without the Use of Black Magic

Closing the loop with a floating ball can teach you a lot about how a control system works.


Tom Cantrell

Silicon Update

Goodbye CRT, Hello LCD

New LCD devices and controllers make LCD a more viable choice than ever before for demanding display applications.


Advertiser's Index


Ken Davidson

ConnecTime -- Excerpts from the Circuit Cellar BBS


Steve Ciarcia

Steve's Own INK

The Whole Job

Engineering doesn't end when the solder cools. Steve talks about the rest of the job.
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