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The Interaction Design of Microsoft Windows CE

This presentation explores the interaction design of Microsoft Windows CE, focusing on user interface (UI) design goals, the evolution of design across various portable devices such as Handheld PCs, Palm PCs, and Auto PCs. It compares Windows CE with the PalmPilot, highlighting the strengths and weaknesses of each system. Key findings from usability testing emphasize the need for consistency and familiarity while acknowledging the challenges in achieving an intuitive interface. This resource is valuable for understanding the historical context and design principles that guide the development of handheld operating systems.

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The Interaction Design of Microsoft Windows CE

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  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

  2. Outline • Introduction • User Interface (UI) Design Goals • Evolution of Design • Handheld PC (H/PC) • Palm PC (P/PC) • Auto PC (A/PC) • Comparison: Windows CE vs. PalmPilot • Conclusions

  3. Introduction – Windows CE • An operating system designed to run on • computers that are considerably smaller than PCs • portable devices designed to be a “Desktop Companion” • products that support TV-, Internet-related applications

  4. Outline • Introduction • User Interface (UI) Design Goals • Evolution of Design • Handheld PC (H/PC) • Palm PC (P/PC) • Auto PC (A/PC) • Comparison: Windows CE vs. PalmPilot • Conclusions

  5. User Interface Design Goals • Achieve consistency rather than predictability • Make use of users’ existing PC expertise • Support user tasks on various platforms • Develop systems that are easy to integrate with existing PC systems

  6. Outline • Introduction • User Interface (UI) Design Goals • Evolution of Design • Handheld PC (H/PC) • Palm PC (P/PC) • Auto PC (A/PC) • Comparison: Windows CE vs. PalmPilot • Conclusions

  7. Evolution of Windows CE Design:Handheld PCs (H/PCs) [1995] • The first H/PC prototype contained concepts of desktop PCs but did not have much affinity • Screen size 480 x 240 pixels • Input/Output Methods • A keyboard for touch-typing • A touch screen for navigation on the interface • Silk-screened buttons that enabled global functionality • Single-tap activation for the applications

  8. Evolution of Windows CE DesignHandheld PCs (H/PCs) [1995] • Usability Testing: Controlled Experiments • People found the size of certain targets too small • People were not able to identify the active areas on the interface • People were confused with the selection / activation model • In other words, the interface design is failed!

  9. Evolution of Windows CE DesignHandheld PCs (H/PCs) [1995] • New interface that strongly resembles Windows Desktop • The same input/output characteristics, tasks and product goals • Usability Testing • Most targets are perceived as too small to hit • Single-tap activation is efficient • Auto-save model fails

  10. Evolution of Windows CE DesignPalm PC (P/PC) [1998] • Design Goals • Fit the H/PC interface into a smaller size • 320 x 240 pixel screen • Provide quick information look-up and entry • Enable information customization • Make it smaller and easy to carry • Alternative Input/Output methods to H/PC • Hardware buttons for scrolling up/down • Handwriting recognition and voice recording

  11. Evolution of Windows CE DesignPalm PC (P/PC) [1998] • Usability Testing: Controlled Experiments • Data entry using a small on-screen keyboard is tedious • The use of keyboard is rated as easiest to use • Subjects were the fastest and most accurate with the keyboard • In general, handwriting recognizer is rated low as an input method

  12. Evolution of Windows CE DesignAuto PC (A/PC) [1998] • First product that deviates from the Windows 95 look designed to support tasks of a mobile professional while driving • Uses New forms of Input/Output Methods • No stylus and no touch screen • A numeric keypad for character inputs • Speaker-independent voice command interface • Sound feedback about the state of the system • Infrared connections to H/PCs and P/PCs

  13. Evolution of Windows CE DesignAuto PC (A/PC) [1998] • Usability Testing: Field Studies • Interoperability of in-car equipment was compelling • People usually plan their tasks before getting into the car • They need to be kept informed about schedule changes • The data is then synchronized at the office/home

  14. Outline • Introduction • User Interface (UI) Design Goals • Evolution of Design • Handheld PC (H/PC) • Palm PC (P/PC) • Auto PC (A/PC) • Comparison: Windows CE vs. PalmPilot • Conclusions

  15. Target audience: PC users Designed as a Desktop companion Consistency Application switching Multiple taps required to access information Target audience: PC users Does not emulate PC design Predictability No application switching Quick and instant access to information Windows CE vs. Palm

  16. Outline • Introduction • User Interface (UI) Design Goals • Evolution of Design • Handheld PC (H/PC) • Palm PC (P/PC) • Auto PC (A/PC) • Comparison: Windows CE vs. PalmPilot • Conclusions

  17. Conclusions • Implemented in a way to achieve consistency • Take something that users understand and use • And copy it • Familiarity and functionality is satisfied; but not usability • Interface consistency is not enough to ensure success • Long-term usage is hampered

  18. Conclusions • Despite these facts • Respect must be given to desktop Windows when creating Windows CE interfaces • One cannot ignore Windows to create successful products • So, the saga continues….

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