Foreground p.62 AN 8088 PROCESSOR FOR THE S-100 BUS, Part 2 [author Thomas Woodward Cantrell] The second part of this article describes techniques for interfacing to the S-100 bus. p.96 SORTING WITH BINARY TREES [author Bill Walker] This data-storage structure makes it easy to insert or delete items in the file. p.196 FLOPTRAN-IV: A TINY COMPILER [author Mark Zimmermann] Commodore PET's BASIC interpreter is a handy foundation for a tiny compiler. p.232 SYMBOLIC MATH USING BASIC [author David R Stoutemyer] Here's an introduction to symbolic computer mathematics. p.282 THE 6502 GETS MICROPROGRAMMABLE INSTRUCTIONS [author Dennette A Harrod] A simple circuit and some clever programming make enhancing this processor's instruction set possible. p.286 VECTOR GRAPHICS FOR RASTER DISPLAYS [author John Beetem] When plotting a line on a raster display, there is more logic involved than moving from point A to point B. Background p.24 MAKE LIQUID-CRYSTAL DISPLAYS WORK FOR YOU [author Steve Ciarcia] With appropriate interfaces, these displays are suitable for many applications. p.114 AN INFORMATION-RETRIEVAL SYSTEM [author Robert W Elmore and Krishna K Agarwal] This system is capable of maintain…