Circuit Cellar Ink 56
March 1995

Table of Contents


Ken Davidson

Editor's INK

Warm Fuzzies?


Harv Weiner

New Product News


Bud Moss

Fuzzy Logic: The Next Generation of Control

As Bud points out, fuzzy logic balances many factors in measurable and mathematically precise ways. A myriad of graphs help visualize the fuzzy-logic decision-making process.

Download: FUZZY.EXE


Jim Sibigtroth

Fuzzy Logic for Embedded Microcontrollers

Fuzzy logic doesn't necessarily need lots of horsepower. Many embedded applications that use more traditional control schemes can benefit from the use of fuzzy logic. Jim looks at how to keep things simple and speedy.



Robert Schreiber

Levitating a Beach Ball Using Fuzzy Logic

Wanting a hot trade show demo, Microchip takes up Tom Cantrell's PID-pong challenge. Not only do they get a beach ball hovering near the top of a large plastic tube, they do it all with fuzzy logic.


David Rees-Thomas




Michael R. Smith
Kathy Kim

Being ASSERTive with Your Processor

The Advantage of Software Interrupts

To interrupt or not to interrupt, that continues to be the question. Past articles have explored the advantages of polling and straight-line code. Now Mike takes a look at the benefits of using software interrupts.


Ed Nisley

PDF Firmware Furnace

Journey to the Protected Land: Smashed Gates & Conforming Code

Enforcing strict levels of access is good for preventing an errant task from trashing sensitive core code, but there are times when such access is necessary. Ed looks at what's involved in granting just that.

Download: FF56.ZIP


Jeff Bachiochi

From the Bench

RF Panic Button Commands Multiple Automotive Functions

Concerned about being stalked in dimly lit parking lots? Try Jeff's key-ring transmitter. You'll be able to lock or unlock your vehicle's doors, unlock your trunk, or in case of emergency, sound the horn.


Tom Cantrell

Silicon Update

Plan '251 from Outer Space: Intel's 8xC251SB

Here's a stamp of approval for Intel's 8xC251SB, a new star upstaging its predecessor, the 8051. After checking out its similarities to the 8051, Tom cuts straight to its differences -- alien opcodes, shorter instruction cycles, and register architecture.


John Dybowski

Embedded Techniques

Embedded Development

Program development for small embedded processors can be problematic without the proper tools. John's answer -- he emulates the AT89C2051 with the 8051-compatible AT89C51, saving lots of time and money.


Advertiser's Index


Ken Davidson

ConnecTime -- Excerpts from the Circuit Cellar BBS


Steve Ciarcia

Steve's Own INK

Necessity: the Mother of Invention

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