Circuit Cellar Ink 33
April 1993

Table of Contents


Ken Davidson

Editor's INK

Take Up a Collection


Reader's INK

Letters to the Editor


Harv Weiner

New Product News


John Wettroth

Data Acquisition and Control with the HP-48SX

Hewlett Packard's HP-48SX calculator is not only a powerful mathematical computation device, but it makes an excellent platform for portable data acquisition when used with John's ADCM-48 interface.


Jeff Schmoyer

What Makes CVSD Tick?

The quest for a better mousetrap is never ending. Just as you become comfortable with PCM, ADPCM, and LPC, along comes a new method for storing digitized speech. Find out what makes CVSD different.


J. Conrad Hubert

Generate Digital Speech Using CVSD

After Jeff Schmoyer's introduction to the CVSD method of digitizing speech (see page 20), it's time to build some hardware. A chip from Texas Instruments and a PIC processor make embedding speech simple.



William Von Novak

Computer-controlled Light Dimmers

Following up on last month's introduction and theory, William dives into the hardware end of dimmer design with some sample circuits, design tips, and a complete application.

Download: DIMMER.ZIP


Ed Nisley

Firmware Furnace

Barnacles on the ISA Bus: Starting the '386SX Development Card

The first step in adding your own circuits to a standard '386SX motherboard is to come up with a bus interface board. Ed takes that first step as he starts building his Firmware Development card.

Download: FF33.ZIP


Jeff Bachiochi

From the Bench

You Can Count On It

Building on the seven-segment LED display panel he presented last month, Jeff explores some of the potential applications for this versatile output device.

Download: FTB33.ZIP


Tom Cantrell

Silicon Update

RISC Faces Reality -- And Reality Blinks

For embedded systems designers who want a versatile, yet inexpensive, RISC processor, the AMD29205 proves to be a solid contender with its low power consumption and small size.


John Dybowski

Embedded Techniques

Bring Your Vacuum Fluorescent Display to Life

Building on his vacuum fluorescent display theory discussion from last month, John shows what's necessary to interface to and actually light up a VFD.

Download: ET33.ZIP


Russ Reiss

Patent Talk


Advertiser's Index


Ken Davidson

ConnecTime -- Excerpts from the Circuit Cellar BBS


Steve Ciarcia

Steve's Own INK

Voice Recognition and Professional Reinvestment

FTP Directory for INK 33
Follow this link to order a copy of INK 33

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