System for utilizing object oriented approach in a portable pen- based data acquisition system by passing digitized data by data type to hierarchically arranged program objects

摘要

An object oriented database data acquisition device having a housing with at least one substantially planar surface and a video screen positioned thereon. The device includes a digitizer positioned substantially coextensively under the video screen and a pen having a power source for activating the digitizer. Means for controlling the data acquisition device includes controllers comprising a first microprocessor, a second microprocessor connected to said digitizer and first processor for scanning the digitizer, a third microprocessor connected to said video screen for controlling screen images, a power manager connected to the first processor, the power manager including a power source and controller, program storage, and a program stored in the program storage for controlling the microprocessors.