The document discusses the evolution of the user interface design for Microsoft Windows CE. It describes three iterations: the Handheld PC from 1995 which resembled a desktop PC but had usability issues; the Palm PC from 1998 which had a smaller screen and alternative inputs like handwriting but data entry was still difficult; and the Auto PC from 1998 which was designed for in-car use without a touchscreen or stylus and emphasized voice commands. While Windows CE aimed for consistency with desktop Windows, usability tests revealed issues at each stage and consistency alone did not guarantee success.

1. The Interaction Design of Microsoft Windows CE Sarah Zuberec Productivity Appliance Division, Microsoft Corp . Presented By : Ugur Kuter Dept. of Computer Science, Univ. of Maryland, College Park, MD 20742