The aim of this manual is to teach BASIC programming language to a depth sufficient for GCSE computer studies, City & Guilds 746 and 747, BTEC National and Higher National Awards, and BCS part I. It is also suitable for those faced with programming for the first time, but who are not taking any examination, such as trainee accountants, Business Studies students and home-computer enthusiasts. It is featured on the BCS computer booklist for schools. The book seeks to provide a complete text on the BASIC language, and to teach correct programming through designing, coding and testing. Many worked examples and exercises with answers are included. Although written specifically for the IBM PC, BBC model B and Research Machines 480Z, it is applicable to all computers that use BASIC. It contains enough information on sorting, searching, file processing, graphics, sound and process control to allow the reader to develop and implement commercial, industrial and scientific systems. An ELBS/LPBB edition is available.