Circuit Cellar Ink 20
April/May 1991

Table of Contents

1


Curtis Franklin, Jr.

Editor's INK

Towards More Personal Computing

5

Reader's INK

Letters to the Editor

8

New Product News

14


Tom Dahlin
Don Krantz

A MIDI-Controlled Sampled-Sound Player

Digitally sampled sound is impressive. MIDI control is versatile. The contest-winning project brings them together in a solid design.

Download: SNDSRC.ZIP SNDDATA.ZIP

24


John Wettroth

A Portable 8051-Based DRAM Tester

Designing Maximum Features into Minimum Space

Memory problems can be hard to track down. This portable unit lets you test DRAM in the palm of your hand.

Download: DRAMTEST.ZIP

41


Ed Vogel

Using the TI74 for Data Acquisition

Low-Cost BASIC I/O

A simple expansion unit for an affordable hand-held computer gives you a powerful data logger with on-site analysis capability.

45


Ed Nisley

The Mystery of Intel Hex Format

Exorcising the Hex Demon

Intel's hex format has caused many programmers to scratch their heads. Now Ed Nisley shows you the secrets of making Intel hex work for you.

Download: HEXDEMON.ZIP

50


Ed Nisley

Firmware Furnace

You Can't Do That! -- A Look at Porting Code from OS/2 to DOS

57


Tom Cantrell

Silicon Update

Pixie Power -- A Switch + LCD Combo for Intelligent I/O

63


Scott Robert Ladd

Practical Algorithms

Adjusting Standard Deviation to Sample Size -- Increased Reliability for BASIC Statistics

66


Jeff Bachiochi

From the Bench

Working with an Autorouter -- Integrating a New Tool into an Established Engineering Routine

Jeff Bachiochi has worked with board designers and "rolled his own" with a PC Based autorouter. Here are his tips and techniques for getting the most out of each.

71


Curtis Franklin, Jr.

Bringing in the Pros

Working with a Board Design Firm

There are times when a professional board designer is the cheapest and best route to a finished board. This interview walks you through the process with a top board designer.

79


R. Scott Coppersmith

A PC-Controlled Light Show

A Parallel-Communication Lighting Board with MIDI Potential

When it's time to take your show on the road, this lighting controller can give you sophisticated control with simple PC programming.

Download: LIGHTCTL.ZIP

81

Advertiser's Index

84


Ernest Stiltner

Working with Zeropower SRAM

Building ZMEM, The Zeropower Memory Chip Programmer

Zeropower RAM is at the heart of many portable applications. Here are the simple techniques you need to use zeropower RAM in your next design.

86


Ken Davidson

ConnecTime -- Excerpts from the Circuit Cellar BBS

96


Steve Ciarcia

Steve's Own INK

Why Portable?

FTP Directory for INK 20
Follow this link to order a copy of INK 20

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