Vol.7 n°8 august 1982

Vol.7 n°8 august 1982

p.3 In the Queue (table of contents)

Features

p.57 High-Resolution Sprite-Oriented Color Graphics

You don't need Logo to use sprites for animation with the illusion of depth.

[author : Steve Ciarcia]

p.88 A Beginner's Guide to Logo

Although Logo is used as a language for introducing computers to children, it is not just for kids.

[author : Harold Abelson]

p.116 Logo in the Schools

Putting computers in the classroom has led to some unexpected results.

[author : Daniel Watt]

p.138 Designing Computer-Based Microworlds

Well-written Logo procedures stimulate children's desire to learn by making complex ideas understandable and intrinsically interesting.

[author : R. W. Lawler]

p.163 Why Logo?

Logo is designed to encourage development of problem-solving skills.

[author : Brian Harvey]

p.196 Introducing Logo to Children

Teaching Logo requires an awareness of different learning styles.

[author : Cynthia Solomon]

p.210 Logo - A Cultural Glossary

Common Logo terms are defined and their interrelationships are highlighted.

[author : E. Paul Goldenberg]

p.230 Logo for the Apple II, the TI-99/4A, and the TRS-80 Color Computer

Each version of Logo is best suited for a particular audience.

[author : Gregg Williams]

p.291 A General-Purpose I/O Board for the TRS-80 Models I and III

The system bus is described, and plans are presented for an interface board with 24 lines of discrete input/output.

[author : William Barden Jr.]

p.323 The Logo Journal, News and Views of the Logo Community - A collection of articles

p.324 Learning Physics from a Dynaturtle

[author : Andrea A. diSessa and Barbara Y. White]

p.325 Logo Music

[author : Jeanne Bamberger]

p.328 Leading Fish to Water

[author : Dr. William Higginson]

p.329 Logo Project PROKOP

[author : Heinz-Dieter Boecker and Gerhard Fischer]

p.330 The Group of the Turtle

[author : Dr. Uri Leron]

p.331 The Lamplighter Project

[author : Henry Gorman Jr.]

p.332 Logo Research at Bank Street College

[author : Jan Jewson and Roy D. Pea]

p.333 Young People's Logo Association

[author : James H. Muller]

p.334 and Logo Update

[author : Phil Lemmons]

p.342 User's Column: Semidisk, Software Tools, the BDOS Blues, Power, and LISPs

A veteran computer user voices his opinions, bashed and unabashed.

[author : Jerry Pournelle]

Reviews

p.38 Program Generators

[author : George Stewart]

p.366 The Commodore 8032 Business System

[author : Harold Dickerman]

p.398 The Heath/Zenith Model 47 Dual Floppy-Disk Drive

[author : Christopher O. Kern]

p.408 Assisted Instructional Development System

[author : George Wolfe]

Nucleus

p.6 Editorial: Keeping Our Technological Edge

p.20 Letters

p.84 BYTE Game Contest Winners and Rules for Contest #2

p.380 Technical Forum: Let the MC68701 Program itself

p.416 Book Review: Software Design: Methods and Techniques

p.418 Ask BYTE

p.422 Software Received

p.426 BYTE's Bits

p.428 Clubs and Newsletters

p.430 Books Received

p.430 BYTE's Bugs

p.432 Event Queue

p.443 System Notes: Using the LOOKUP Function in Visicalc

p.446 BYTELINES

p.451 What's New?

p.509 Unclassified Ads

p.509 BOMB, BOMB Results

p.511 Reader Service

In This Issue

Welcome to our annual language issue. This year we present Logo, the microcomputer language perhaps best known for its turtle graphics. Mathematically minded readers may recognize the cover illustration by Robert Tinney as BYTE's own version (influenced slightly by M.C. Escher) of the classic four-bug puzzle. In this puzzle, for which a Logo program is shown on the cover, four bugs are placed at each corner of a square; each bug attempts to walk toward the bug to its immediate right. In the process they trace Archimedean spirals. The object is to calculate the length of the spirals. The answer: each is equal to the length of one side of the original square. But Logo is more than turtles, and our articles will tell you what it's all about.

To get you started, Harold Abelson presents "A Beginner s Guide to Logo," Brian Harvey answers the question "Why Logo?," and E. Paul Goldenberg fills you in on the jargon with "Logo-A Cultural Glossary." Daniel Watt discusses "Logo in the Schools," and Cynthia Solomon describes "Introducing Logo to Children." R. W. Lawler explains one of the unique abilities of Logo in "Designing Computer-Based Microworlds."

Steve Ciarcia shows you how to build a graphics board for your Apple II computer using the Texas Instruments TM59918A, and William Barden Jr. designs "A General-Purpose I/O Board for the TRS-80 Models I and III." Of course, we have Jerry Pournelle's User's Column and more.