The report details a study to identify vocabulary needed by Japanese students of English as a Second Language to function successfully in college computer science courses and research laboratory apprenticeships. The vocabulary was then to be taught in the first two semesters of freshman English composition. The study involved development of simple computer software and administration of an electronic questionnaire and individual interviews. The software was designed to study lexical frequency in the published annual review of the university's school of computer science and engineering. Software specifications are given here. The resulting vocabulary is also presented, in four categories: university academic vocabulary; university physical environment vocabulary; people-related vocabulary; and computer science discourse vocabulary. It was found that most of the words students need to know to negotiate computer science content materials in English are words common to general English rather than words of a semi- of highly technical nature. Contains 17 references. (MSE)