Binary numbers -- Logic expressions -- Electronic logic circuits -- Computer arithmetic -- Computer design -- Instruction set and code assembly -- Program structures -- Simple computer circuits -- Input and output ports -- Input and output methods -- More devices -- Assembler and linker tools -- The control unit -- Larger computers -- Cache memory -- Memory management -- Appendix A: G80 instruction set -- Appendix B: ASCII character codes -- Appendix C: Specifications of the input and output devices -- Appendix D: The GDS assembler and linker.