Byte vol.12 №11 November 1987

FEATURES 99
The Tandy Anniversary Product Explosion…………..100
by Rich Malloy, G. Michael Vote, and George A. Stewart Tandy celebrates its ten-year milestone with four new computers and a laser printer.
The four new Tandy computers and Tandy’s (long-awaited) first laser printer.
The OS/2 Applications Family………………….109
by Ray Duncan
Let’s clear up the confusion about what it will take to run programs under OS/2.
Product Preview: A Spiritual Heir to the Macintosh……………..121
by Ezra Shapiro
The Canon Cat is Jef Raskin’s version of a “people’s computer.”
Product Preview: The Archimedes A310………………………….125
by Dick Fountain
An early look at what may be the world’s fastest personal computer.
Ciarcia’s Circuit Cellar:
Build the Circuit Cellar AT Computer, Part 2……135
THEME: Heuristic Algorithms 147
Introduction……………………………….148
by G. Michael Vose
Zero-Knowledge Proofs……………………….149
by Peter Wayner
A new heuristic method lets you prove your identity without revealing a password.
Back-Propagation……………………………155
by William P. Jones and Josiah Hoskins
A generalized delta learning rule, demonstrated with a neural-network simulation written in C.
Optimizing Compilers………………………..165
by Mark Roberts
Techniques for generating more efficient code.
A Search Strategy for Commonsense Logic Programming………………………………..173
by Paul V. Haley The incorporation of heuristics into modern languages could give us the ability to write “smart” programs.
Mathematical Reasoning………………………177
by Leon Sterling
An equation solver written in Prolog that uses heuristic methods.
Neural-Network Heuristics……………………183
by Gary Josin
Three heuristic algorithms that learn from experience.
REVIEWS 193
Reviewer’s Notebook…………………………194
by Curtis Franklin Jr.
The Macintosh II……………………………197
by Bruce F. Webster
The newest Mac features a 68020 CPU, NuBus slots, and color.
The GRiDLite Laptop…………………………202
by John Unger
GRiD’s portable computer combines advanced features with mundane hardware.
The Wang LapTop……………………………..203
Alex Lane
A portable to bridge the gap between Wang and IBM PC computing environments.
The Definicon DSI-780………………………..209
by Dave Thomas
Equip your IBM PC with a 16-MHz 68000 microprocessor.
Laser Printer Times Four……………………..214
by Wayne Rash Jr.
Lower prices and higher capabilities characterize these printers.
Three C Language Screen-Utility Packages for PCs…. 223
by Jonathan Robie
A comparison of the windows for Data, C-Worthy, and Vitamin C screen utilities.
Advantage C++ and Guidelines C+ +…………….229
by Mark Mallett
C+ + compilers for the IBM PC and its compatibles.
Equation Solvers……………………………237
by George A. Stewart
A look at two packages for mathematical computing without programming.
Personal Consultant Plus…………………….242
by Ernest R. Tello
A LISP-based expert system shell for personal computers.
Guide……………………………………..244
by William Hershey Hypertest comes to the Macintosh.
KERNEL 249
Computing at Chaos Manor:
New Life for Lucy …………………………251
by Jerry Poumelle
Jerry reincarnates Lucy.
Applications Only: Into the 4th Dimension, Part 1……………….269
by Ezra Shapiro