Circuit Cellar Ink 59
June 1995

Table of Contents


Ken Davidson

Editor's INK

Breaking Down the Barriers


Harv Weiner

New Product News


Seibert L. Murphy
Samir I. Sayegh

PDF Artificial Neural Network Recognizes Sounds

It's one thing to hear sound. It's quite another to intelligently identify the sound. Here, neural nets do just that -- they recognize a tone whether it's generated by a signal generator or a loudspeaker.


Gregg Norris
Eric Wilson

The Eye Mouse

An Ocular Prosthesis

The Eye Mouse offers people with extreme disabilities the opportunity to control a computer. An electrode interface enables a person to manipulate a common mouse pointer using his or her eyes.



Don Lancaster

The Quest for Magic Sine Waves

Upping Power Electronics Efficiency

A little magic goes a long way in replacing PWM. Don creates his magic through canceling harmonics. As he points out, the tricky part is not coding the binary sequences, but searching for the right 420-bit words.



Brad Hunting

The Solution's in the CAN -- Part 2

Putting CAN Online with a Multinode, Multiplatform Implementation

Determined to see if CAN really can, Brad puts CAN through all the paces -- a multinode, multiplatform network, a PC, an 8031, and an 80C592. It seems there ain't much this CAN cannot do.



Ed Nisley

PDF Firmware Furnace

How the PC Keyboard Got its Bits

Ed takes a brief aside from protected-mode programming to look at the keyboard. After reviewing the history of keyboard development, Ed gets into the nitty-gritty issues of keyboard microprocessors and scan codes.

Download: FF59.ZIP


Jeff Bachiochi

From the Bench

Emulating a Motorola IR Chip Using a PIC

When chip s and support products disappear, what do you do? According to Jeff, you engineer your way around the problem. Here, Jeff uses a PIC to emulate the original Motorola infrared transmission codes to get back in business.

Download: FTB59.ZIP


Tom Cantrell

Silicon Update

Chip on Patrol

You want an 8-bit controller that's not an 8051, but is still cost-effective and can provide a solid midrange solution? Well, have you tried National's COP family? According to Tom, COP's the way to go.


John Dybowski

Embedded Techniques

How Small Can a Thermometer Get?

John uses an AT89C2051 microcontroller to network a DS1620 digital thermometer. A small LCD displays the temperature while RS-485 provides a network interface.

Download: ET59.ZIP


Advertiser's Index


Ken Davidson

ConnecTime -- Excerpts from the Circuit Cellar BBS


Steve Ciarcia

Steve's Own INK

Pyramid Schemes

FTP Directory for INK 59
Follow this link to order a copy of INK 59

<<< Ink 58

Ink 60 >>>

Main Index

Author Index