Craft Digital Assistant
A specialized personal digital assistant (PDA) that can access the Craft Access System, allowing telecommunication field technicians to access work orders and other information through the telephone system. Also referred to as a CDA, playing off the term PDA. The Harris Dracon SuperTech 2000 is an example of a craft digital assistant running Newton OS.
Wikipedia: Craft Access System
Internet Archive: Byte: The Newton Goes Vertical