Part 1 The transputer: system design; system architecture; INMOS links. Part 2 OCCAM notation: channels and concurrency; notation. Part 3 Data types: primitive types - channel, Boolean, constants, timer type, characters; array types; record types. Part 4 OCCAM processes: language constructs - SEQ sequence, PAR parallel, PLACED PAR, IF conditional, WHILE loop, ALT alternation, CASE; replicators - replicated SEQ, PAR, IF and ALT; priorities - PRI PAR, PRI ALT; protocol - sequential and variant. Part 5 Expressions: arithmetic operators; bit and shift operations; Boolean operations; relational operations; data type conversions. Part 6 Procedures and functions: scope; procedures; functions. Appendices: syntax of OCCAM 2; ASCII character code; keywords.