Abstract: An insurance estimation, service manual or other system stores and displays documents and associated graphics. The system stores a multiplicity of the graphic images in compressed, digital form. A first group of the graphic images are associated with a first one of the documents. By selecting the first document, the system automatically decompresses the first plurality of graphic images. The system then displays at least a portion of the selected first document on a display screen along with a first one of the decompressed graphic images. Subsequently, upon touch of a touch screen, the system displays a second one of the decompressed documents. Because the second graphic image was decompressed when the document was selected, there was virtually no delay in displaying the second graphic image. Either graphic image can be enlarged and centered about or near a point of touch over the image.

Abstract: Apparatus for demonstrating the use of a computer terminal comprises a projection module supported on a standard overhead projector. The projection module includes a frame which is adapted to rest on an illumination window of the overhead projector. A transmissive liquid crystal display is mounted in the frame parallel to the illumination window such that an image on said liquid crystal display is projected by the projector. A transparent touch screen is also mounted in the frame overlaying the liquid crystal display. By means of a stylus, a user touches the touch screen and thereby designates desired text and/or images for subsequent display. Coupled to the decoder is a computer which retrieves the desired text and/or images which are then transmitted to a display driver. The aforesaid apparatus is most suited to demonstrate a computer terminal which has a touch screen for selecting text and/or images for display.