Abstract: The training and testing system runs concurrently with the target software application program. The testing and training program sets up a test scenario inside the software application program and asks the user to perform a series of application functions while monitoring the user's responses. The user can select a Show-Me button to which the training and testing program responds by displaying a series of instructional messages and cursor movement and keystroke commands. These cursor movement and keystroke commands are throttled to a speed simulating the speed at which a user would execute them, so that the trainee sees the actual software application program perform the operation as if he or she had performed it.

Abstract: An electronic calculator having a liquid crystal display (LCD) which is supported on a transparent substrate so that light from an overhead projector or the like can be transmitted through the display to create an enlarged image of the numerals in the display that are made opaque by proper excitation of the LCD. A calculator supplied with such modified LCD wherein the rear surface of the LCD is parallel to the rear surface of the calculator case so that the case can be placed upon the projection plane of a conventional overhead projector, thereby permitting an instructor to manipulate the input keys to the calculator while simultaneously affording an enlarged view of the LCD to others in the classroom.