On implementing APL in a language pre-processing environment

[摘要] An interactive computing system using APL is considered. This system is distinguished by having lexical scanning, symbol table construction, and number conversion removed from the CPU and performed at a remote terminal by a terminal processor. An implementation schema for the CPU support software is presented, and the characteristics of the resulting system are examined. It is shown that the CPU load can be lessened to some degree, as hoped, but that several conceptual difficulties with the functional division tend to reduce the expected level of performance as well as to change some basic system attributes. General system goals and economics are reviewed, and topics for further investigation are cited.

[发布机构] Rice University