The material for this book first appeared in the magazine Personal Computer World, as a series of articles which ran from September 1979 to June 1980. It was designed to appeal to a new (in 1979) sort of reader the microcomputer enthusiast, both amateur and professional about whom two assumptions were made. The first was that the reader was someone who had already learned to program (probably in BASIC) and who wanted to create programs in as systematic and proficient a fashion as possible. The second was that the reader would not be adverse to an occasional glimpse of how the underlying...