Personal computers: As new systems move up to 16-bit microcomputers, the goal of software compatibility remains as elusive as ever

Personal computers of all shapes, sizes, and prices are springing up as the industry soars beyond $6 billion annually in sales revenue. The introduction of IBM Corp.'s personal computer in 1981 spurred interest last year in the 16-bit personal computer and sparked a price war among the manufacturers of 8-bit computers.