CRT (cathode ray tube) based, direct selection dialogs for computing machines and systems were apparently a cure for issues like ease of learning and ease of use. But unforeseen ~ and probably unforeseeable problems arose as increasingly sophisticated systems and dialogs were developed. This paper describes some of the emerging problems in CRT-based dialog design, develops theories about why they occur, and discusses potential solutions for them as a basis for future research. This investigation also provides a survey of the research into what makes programming and programming languages difficult, and what makes them simple.
Library of Congress Subject Headings
Human-computer interaction; User interfaces (Computer systems)--Design; Computer programming
Department, Program, or Center
Computer Science (GCCIS)
Levine, Jonathan, "CRT-based dialogs: Theory and design" (1990). Thesis. Rochester Institute of Technology. Accessed from
RIT – Main Campus