Byte vol.6 №11 November 1981

Features
18 Writing with a Data-Base Management System by Edward E Brent Jr I Wcxd-pfoceivng iy stems fne after you know what you’re qo^q co My. but a data-base management system can hefo you get if aB together
36 Switching Power Supplies, An Introduction by Steve Ciarcia I You can experiment wnn a sxnpie design for a nonisolated angle-ended switching vottage regulator
48 Fundamentals of Relational Data Organization by Joel Neely and Steve Stewart / How you can apply a set of mathematcasy elegant procpies to the organizaDon of your data base
62 Build a Bar-Code Scanner Inexpensively by Bradley W Bennett I ’n one package. Hewlett-Packard has incorporated the optical heart of a scanner system
84 The Microcomputer as a Laboratory Instrument by Daniel Cosgrove I The microcomputer can become a standard laboratory instrument for run-nng experiments and analyzing the results
97 Data-Base Management Systems: Powerful Newcomers to Microcomputers by Mkhael Gagle, Gary J Koehler, and Andrew Whrnston IA oriel muoducnon to database systems leads to a fook at how one mcrocomputer mpiementaton works
174 DIF: A Format for Data Exchange between Applications Programs by Candace E Kalish and Malinda F Mayer I Software Ans proposes a sokxon to the problem of inaccessible data.
208 A Survey of Data-Base Management Systems for Microcomputers by Kathryn S Barley and James R Driscoll / Data-base management systems are becoming a popu’ar software item Check this survey for the one that interests you.
236 PDQ: A Data Manager for Beginners, Don’t Reinvent the Wheel by Paul Swanson IA wei-known technique makes a good compromise between speed and ease of programmng.
312 The Atari Tutorial, Part 3: Player-Missile Graphics by Chris Crawford / The Atan prayer-miss^e system allows you to move game figures across the screen quickly and easily—even in BASIC
370 Toward a Structured 6809 Assembly Language, Part 1: An Introduction to Structured Assembly Language by Gregory Walker I The problem wtn the goto construct is that < is too general a programrrvng form 384 PROLOG, A Step Toward the Ultimate Computer Language by Ron Ferguson I This high-level language approaches English m ease to use 400 PS—A FORTH-Llke Threaded Language, Part 2 by Vaio G Motalygo I PS overcomes seme of the problems FORTH has with low-ievei word definitions
472 Linking a Pascal Microengine to a Cyber 170 by Steven M Sedfet and Jonathan Dust / A simple Re-transfer process combines the best of both worlds
493 Information Hiding In Pascal, Packages and Pointers by
Michael B Feldman I Htcinq unnecessary detatfs improves high-level programmng
Reviews
76 Reversal, Othello for the Apple II by Mark Friedman 126 The Exatron Stringy Floppy Data-Storage System Keith Carlson
The Datahandler from Miller Microcomputer Services Allyn Richardson
Microsoft Softcard by Mark Pelczarski
Courseware Magazine by Elaine Holden
Orchestra-80 by Elizabeth Cooper and Yvon Kolya Apple II File-Management Systems by Ken Blochowiak ENHBAS by Mahlon G Kelly
Five Spelling-Correction Programs for CP/M-Based
by Keiti 138 by Allyi 152
166 264 274 342 434
Systems by Phil Lemmons
Nucleus
6 Editorial. Can We Agree on Standards?
10 Letters
8f 308 BYTE s Bits
134 BYTE Comment: Reviewing the Microcomputer Revolution
302 BYTELINES
364 Ask BYTE
409 Languages Forum: A View from the Lectern: What’s Wrong with Technical Writing Today?
41 3 Technical Forum. Where Am I? A Proposal for a New Microprocessor Instruction
414 Programming Quickies: WRITELONG. A Pascal Simulation of Long-Integer Output
449 User’s Column
458, 463 Book Reviews
464 Software Received
465 Clubs and Newsletters
466 Event Queue
490 Books Received
499 System Notes: A Voice for the Apple II without Extra Hardware
505 What’s New?
558 Unclassified Ads
559 Reader Service
560 BOMB. BOMB Results