Foreground p.22 A BUILD-IT-YOURSELF MODEM FOR UNDER $50 [author Steve Ciarcia] This originate-only modem will allow you to get started in intercomputer communication with minimal expense. p.58 THE HARD-DISK EXPLOSION: HIGH-POWERED MASS STORAGE FOR YOUR PERSONAL COMPUTER [author Tom Manuel] Thanks to new hard-disk technology, personal computer users can add millions of bytes of mass storage to their systems at a reasonable cost. p.100 WHAT IS FORTH? A TUTORIAL INTRODUCTION [author John S James] Here is an overview of FORTH that lays the foundation for the other theme articles in this BYTE. p.150 BREAKFORTH INTO FORTH [author A Richard Miller and Jill Miller] If you can't imagine any personal use for FORTH, can you imagine a 96-line program that plays a fast, animated game with sound on the TRS-80? p.164 FORTH EXTENSIBILITY: OR HOW TO WRITE A COMPILER IN TWENTY-FIVE WORDS OR LESS [author Kim Harris] This tutorial explains the capability for defining new families of FORTH words. p.210 CONSTRUCTION OF A FOURTH-GENERATION VIDEO TERMINAL, PART 1 [author Theron Wierenga] Part 1 of this article presents a new design using the 8275 controller and a dedicated Z80 microprocessor. Background p…