Abstract: A Digital Oscilloscope has an information storage facility, a processor connected to the storage facility and having a data input, and a graphical display connected to the processor. The storage facility contains a multitude of functional tools for processing a signal from the input and for displaying a result on the display. The display has a control portion operable to display a selected limited subset of the tools. A limited subset of tools are selected from among the multitude of tools, and are displayed on a control portion of the display. The selection may be made manually by the user, or may be made automatically based on the user's recorded use of tools. Multiple subsets may be stored to enable different users to share the oscilloscope.

Abstract: A simplified user interface for an electronic test and measurement device comprises an arrangement of a segmented LCD device and a plurality of keys used to implement a softkey system, in combination with a single AMPs input connector and a rotary selector having only a single position for each basic kind of parameter to be measured. The segmented LCD device includes, at each location adjacent to a key, a plurality of segments representing a vertically-arranged list of functions to be controlled. In one embodiment of the invention, the housing of the electronic test and measurement device is fabricated to have finger-like projections overlaying a portion of the LCD screen for creating the appearance of the continuation of displayed LCD softkey separation lines.