Features p.20 Structured Programming and Structured Flowcharts [author Gregg Williams] A technique that makes programs easier to write, understand, fix, and change. p.36 Build the Disk-80: Memory Expansion and Floppy-Disk Control [author Steve Ciarcia] Steve discusses how to use dynamic memory and floppy-disk-controller integrated circuits and presents a design that incorporates them. p.54 Three-Dimensional Computer Graphics, Part 1 [author Franklin C Crow] Ways to display solid objects with the removal of hidden lines and surfaces. p.132 What Is Good Documentation? [author Jim Howard] How to write clear and effective documentation. p.166 A Beginner's Guide to Spectral Analysis, Part 2 [author Mark Zimmermann] Images can be transformed into holograms via Fourier transforms. p.262 A Simple Approach to Data Smoothing [author Fred Ruckdeschel and Janice A Krinsky] The techniques described here can aid in the interpretation of data taken from real-world situations. p.300 The New Literacy: Programming Languages as Languages [author Jon Handel] BASIC, ALGOL, and APL are compared to the English language. p.317 Computer Music: A Design Tutorial [author Thomas P Orlofsky] A modest amount of theory provides the background for building a simple program-controlled digital tone generator. Reviews p.84 The Micro Matrix Photopoint Light Pen [author Stephen B Gray] p.90 What's Inside Radio Shack's Color Computer? [author Tim Ahrens. Jack Browne, and Hunter Scales] Nucleus p.6 Editorial: Is This Really Necessary? p.12 Letters p.152. 333 Programming Quickies: Computing the Determinant of a Matrix: Constellation I: An Astronomy Program p.155 Languages Forum: A Coding Sheet for FORTH p.164, 314, 316 BYTE's Bits p.216, 224, 234 Technical Forum: DATALINE; Addition and Subtraction: The 1802 Versus the Z80; Build a Simple Video Switch p.230 Desk-Top Wonders: Hunt the Wumpus with Your HP-41C p.236 System Notes: Software Addressing Modes for the 8080 p.242 BYTELINES p.248 Software Received p.252 Books Received p.254 Ask BYTE p.308 Event Queue p.315 Clubs and Newsletters p.337 What's New? p.382 Unclassified Ads p.383 BOMB, BOMB Results p.384 Reader Service