TITLE: The Design and Implementation of a Simple

The basic concepts of batch, conversational, and incremental computing are presented along with a brief discussion on their influence on computing. The design and implementation consideration for the assembly language implementation of a simple incremental assembler is presented. An assembler, to accept simple assembly language programs which are scanned as they are received and assembled into machine code, has been implemented on the Hewlett Packard 2100A computer and is discussed in full detail. The assembler has been designed to execute incomplete programs such that debugging print out of registers and specified core locations is possible. The assembler also provides an editor to perform delete, insert and replace operations on user programs input to the assembler. The assembler is oriented for the naive user, but it assumes the user has a small knowledge of assembly language programming. Important considerations in writing interactive programs are also discussed. iii ACKNOWLEDGEMENTS At this time I would like to thank Dr. Nicholas Solntseff for his patient and helpful guidance throughout the implementation of the project and for his many comments and suggestions regarding the form and content of this report. I would like to express my appreciation to the Applied Mathematics Department at McMaster Univers1ty for giving me the opportunity to attend graduate school and for the privilege of using the departmental computer for my Master's project. I would also like to express my appreciation to th