Foreground p.96 COMPUTING THE I CHING WITH A TRS-80 [author Dr Edwin Dethlefsen] If you cannot afford both a set of tortoise-shell casting wands and a personal computer, you should buy the computer and use the program in this article to peer into the Book of Changes. p.142 ThE GREAT RACE AND MICRO DISK FILES, Horse Race Simulations Joseph J Roehrig Here is a demonstration of some disk file management techniques used in a delightful game program. p.198 PROGRAM THOSE 2708s! [author Robert Glaser] Programming this erasable programmable read-only memory for 8080-based microcomputers is easy with this author's hardware building and software usage methods. p.212 APPLE AUDIO PROCESSING [author Mark A Cross] Here is a simple interface you can add to an Apple II to allow audio input and output. p.234 BUILD A LOW-COST EPROM ERASER [author L B Golter] Do you need to change the programs in your erasable programmable read-only memory? Try building this ultraviolet EPROM eraser to do the job. Background p.18 USING THE COMPUTER AS A MUSICIAN'S AMANUENSIS, Part 1: Fundamental Problems [author Jef Raskin] In the first of two parts, this author explores several musical concepts and poses some of the…