CAD Overlay Integration Technology, a scanning service bureau in Schenectady, New York. In January 1988 Bob Godgart, David Chassin and Michael Mayernik formed Image Systems Technology in Troy, New York. The first version of CAD Overlay was demonstrated at A/E/C trade show in Chicago in May 1988. Subsequent versions include CAD Overlay ESP, CAD Overlay GSX, and CAD Overlay LFX. In 1995, Softdesk Inc. acquired Image Systems Technology and in 1996 Autodesk acquired Softdesk. CAD Overlay was subsequently rebranded as Autodesk CADOverlay. CAD Overlay CAD Overlay is a commercial software application for raster-to-vector translation in 2D computer-aided design (CAD) and drafting —
Computer-assisted language learning (e.g. repeating, paraphrasing, slowing down, correcting, or directing the student to background explanations)." Jones C. (1986), on the other hand, rejected the idea of the computer being "some kind of inferior teacher-substitute" and proposed a methodology that focused more on what teachers could do with computer programs rather than what computer programs could do on their own: "in other words, treating the computer as they would any other classroom aid". Warschauer's high expectations in 1996 have still not been fulfilled, and currently there is an increasing tendency for teachers to go down the route proposed by Jones, making use of