A rescan for this item is available here . Foreground p.22 TRACING YOUR OWN ROOTS [author Stan W Merrill] Genealogical research with a microcomputer p.48 POWER HELPS ANALYZE ELECTRIC BILLS [author Karen S Wolfe] Determine power usage from appliance ratings p.58 SELF-REFRESHING LED GRAPHICS DISPLAY [author Steve Ciarcia] Add a digital display to your computer system p.124 INTERFACING THE S-100 BUS WITH THE INTEL 8255 [author David L Condra] Design advice for the person starting out in hardware p.140 THE XYZ PHENOMENON: Stereoscopic Plotting by Computer [author William T Powers] Three-dimensional simulation using optical devices and computer graphics p.150 CURVE FITTING WITH YOUR COMPUTER [author Fred R Ruckdeschel] A simplified approach to nonlinear regression p.196 SPACE GAME [author Loring C White] Develop your reflexes with this fast-moving game p.200 EASY TO USE HASHING FUNCTION [author Don Kinzer] Random symbol distribution aids recall process Background p.76 PICKING UP THE PIECES [author Alfre d S Baker] Recovering from disk write errors p.90 VARIABLES WHOSE VALUES ARE STRINGS [author Dr W D Maurer] String variables can be easy to use p.100 IBM COMPATIBLE DISK DRIVES [author J…