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Developing Software for the Hand-Held Computer

Developing Software for the Hand-Held Computer. By Jean Sebold Decennial Development Team Technologies Management Office US Census Bureau. Overview. Define Census Operations Census 2004 Test Goals High Level System Design Hardware / Environment Constraints Development Environment

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Developing Software for the Hand-Held Computer

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  1. Developing Software for the Hand-Held Computer By Jean Sebold Decennial Development Team Technologies Management Office US Census Bureau

  2. Overview • Define Census Operations • Census 2004 Test • Goals • High Level System Design • Hardware / Environment • Constraints • Development Environment • Lessons Learned

  3. Overview (cont.) • Census 2006 Test • Goals • High Level System Design • Hardware / Enviroment • Constraints • Development Environment • Problems Incurred • 2004 vs. 2006

  4. Census Decennial Operations • Nonresponse Followup (NRFU) • Address Canvassing (AC)

  5. Census 2004 Test • 1000 Enumerators • 2 sites: 1 urban/1 rural • NRFU started April 2004 and ended July 2004

  6. Census 2004 Test • Goals included: • Automating the NRFU questionnaire in both English and Spanish • Developing an Assignment Management System (AMS) to manage the enumerator workload • Transmitting data to/from the device via a 56K modem

  7. Census 2004 Test • Goals included (cont.): • Allowing the user to capture GPS coordinates • Displaying TIGER map files using COTS product, ArcPad • Encrypting Census data on the Hand-H Computer (HHC)

  8. 2004 HHC Hardware / Environment • Compaq iPAQ 3950 • Pocket PC 2002 – OS • 64 MB Memory • 256 MB SD card • Modem • GPS • Fsecure – encryption software • ArcPad read-only Maps

  9. 2004 Constraints • Screensize – 2” x 3” • Lack of a physical keyboard • No industry standard instrument development tools • Available memory – 64MB • CPU speed – 400 MHZ • Development time – limited • Training – must be simple • OS – uses a ‘lite’ version of Windows

  10. 2004 Development Environment • Visual Studio .NET • C# Programming Language • SQL Server CE • XML

  11. 2004 Lessons Learned • Pocket PC 2002 OS had known problems

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